What is known about space. What else we did not know about space: funny, amazing and incredible facts

astronauts wear diapers

It's true. But not all the time, but only when the situation requires them to be in spacesuits - during takeoff, landing or work in space. Such selectivity is not surprising, because this diaper, as such, is an obligatory part of the spacesuit equipment.

If you scream in space, you won't hear yourself.

Because the sound that we hear is the vibrations of the air, those same sound waves. There is no air in space, which means that sound waves cannot exist there. At the same time, radio waves and light waves easily propagate through outer space, which is understandable - after all, they do not need air for this.

When will Halley's comet arrive?

In 2061. Interestingly, Mark Twain was born in 1835, the year this comet flew by. Once he said: “I came with this comet, and in a year it will again appear in the sky, and I will leave with it.” And so it happened.

Why is space dark?

Because space is absolutely empty space. There isn't even light. More precisely, there is so little light that the human eye is unable to catch it.

When will humanity start colonizing Mars?

We have everything we need right now. The main problem remains the financial side of the issue. Space travel is not cheap. A very realistic date for the first trip to Mars can be considered 2030. True, most likely, this will be carried out either by a private company (like Space-X), or it will be a joint project of the state and some private corporation. Actually, Elon Musk (the founder of Tesla Corporation, PayPal and Space-x) claims that humanity will be able to organize the first colony on Mars before 2100.

Does Nibiru exist

We have heard the theory about some mysterious planet Nibiru more than once. It sounds crazy, but scientists have indeed found evidence of the existence of another planet, which is even further from the sun than Pluto. The approximate time for which the planet makes a complete revolution around the sun is 10 thousand years.

What happens if you fart in space?

It would seem, what a stupid question? .. But it's interesting! The bottom line is that there is no gravity in space that would allow heavier air to sink lower, just as there are no air currents that could blow off this “exhaust” and carry it away. In short, if you fart in space, you will still be hanging in a cloud of your gases. Fortunately, the astronaut's suit is equipped with special filters in case of such a situation. And in general, astronauts simply try to perform such acts of relief in those compartments of the station that are not used too often.

What causes stars to blink?

The fact is that light, passing through different layers of the atmosphere, is refracted. It turns out the same glare effect as when rays pass through water: they refract and flicker.

Is it true that without a space suit, blood can boil in space?

Yes. This is due to the influence of pressure on the boiling point of liquids. The lower the pressure, the lower the boiling point. Thus, due to the low pressure, the temperature of our body will be enough for the blood to boil in space.

What is the temperature in space?

It depends on different circumstances. For example, the closer to the stars (such as the Sun), the higher the temperature. The farther, the colder. For example, the surface temperature of a space station varies depending on whether it is sunny or shady. The temperature on the surface of the station from the sunny side is 121 C°, and from the shadow side -157 C°.

How much debris has humanity left in space?

Many, very many. About 500,000 objects orbit the earth. Most of this debris was sent into orbit by people (old satellites, etc.) and subsequently left in space.

What does a galaxy really look like?

Alas, not like the pictures. More precisely, not quite so. The fact is that those amazing shots of our universe were made using equipment that is sensitive to infrared and ultraviolet radiation. Our eye, unfortunately, would hardly be able to see all this beauty. Not that these pictures are lies. Just accept that photoshop is used for everything these days.

How far is the nearest star from the Sun?

4.24 light years. It's called Proxima Centauri. To somehow imagine this distance, imagine that the Sun and Proxima Centauri have shrunk to the size of a grapefruit. So, even in this scenario, there will be about 4,000 kilometers between them.

Pluto and the dwarf planets

As we all know, recently Pluto was classified as a dwarf planet. What is the difference? The main difference is that an ordinary planet, having a large mass, “clears” the space around it. Dwarf planets are not. Are there other dwarf planets? Yes, there are five of them in our system: Eris, Pluto, Haumea, Makemake, Ceres. The largest of them - Eris - it is 27% larger than Pluto.

Can we be invaded by aliens?

Yes and no. On the one hand, the cosmos is huge and the presence of other intelligent beings is quite possible. On the other hand, in order to overcome the huge distances (most of us do not even realize how huge they are) between stars and planets, a civilization must be very advanced. And we have to somehow attract this super-developed civilization so that they overcome such incredible distances for us.

Space exploration in real life is just as blurry as it is in the movies. This is an area in which it is not always possible to obtain accurate data. Even the best scientists do not know about the size and scale of the Universe. However, every day there is an increasing development of it.

What do researchers still know about space that you might not know yet?

Recording space sounds

NASA uses a technology called ultrasonic data processing to receive signals from radio waves, magnetic fields, and also plasma waves. And it converts these signals into sound tracks in order to "hear" what is happening in distant space.

Quite eerie sounds range from gloomy splashes to signals reminiscent of an approaching spaceship.

Blue Sunsets of Mars

The fact of such a phenomenon became known in 2015, when the first color photo of this planet was obtained.

Scientists attribute the visual effect to the glow of small particles in the atmosphere of Mars, which allow blue color waves to penetrate the atmosphere more efficiently than "longer" ones, such as red, yellow and orange.

Sending into space is insanely expensive

By dividing the launch cost by the weight of the load, you can get staggering numbers. So, one lemon sent into space will cost $2,000.

Not so long ago, every 450 grams of cargo cost $10,000. Now, prices have skyrocketed, to $43,180 for the Cygnus spacecraft and $27,000 for new SpaceX carriers. Thus, to fly a bottle of water into space, you will need to pay between $9,100 and $43,180.

space junk

Outer space is filled with a lot of debris, such as parts of destroyed rockets or broken satellites. These objects still continue to revolve around the Earth at 10 times the speed of the shot.

Space debris is monitored so that those responsible for its distribution are held accountable. However, its number has already exceeded 23,000 objects. The leaders in this list are the USA, Russia and China. Under the responsibility of each of the three countries is a little less than 4,000 objects.

This garbage is dangerous with a possible collision that can cause a huge garbage cloud due to a chain reaction. That's what the movie "Gravity" shows us.

Saving footprints on the moon

Lunar rocks are destroyed so slowly (by 10 mm in 1 million years) that traces of astronauts can remain on its surface for 10-100 million years.

That is how long the traces of astronauts who flew to the moon on Apollo 11 in 1969 can survive on our natural satellite.

outer space temperature

It's not always cold here. In the most remote corners, temperatures can drop to -270 °C. But if you get closer to the Earth, where the Sun surrounds everything with its rays, you can observe an increase in temperature up to 120 ° C.

The astronauts' spacesuits are white so they can reflect heat.

A year is shorter than a day

Venus rotates rather slowly, in the opposite direction from the Earth. Its complete rotation takes 243 of our days, which is its usual day.

But it is located close to the Sun, because it passes around it in just 225 days. Thus, it turns out that the year on Venus is slightly shorter than the day.

The ISS is the size of a football field

The International Space Station is the largest object sent by humans into space. Its length is 108 meters, and its weight is almost 420,000 kg.

During the research, 230 people from 18 different countries visited here.

Without spacesuit

Contrary to the fact shown in the movie "Gravity", without a space suit you would not last more than 15 seconds in space.

Exactly enough for all the oxygen that you have blood. After that, the air in the lungs will expand due to the lack of pressure in the atmosphere, which will tear the tissues. Also in an unprotected body, blood boils and a lack of bowel control will occur.

space criminals

There are certain laws according to which weapons of mass destruction cannot be launched into orbit, and all research must be carried out only for peaceful purposes. Any country is responsible for the object launched into space and the damage it can cause.

Therefore, the UN monitors outer space and objects with people in it. Any illegal actions can make an astronaut a space criminal.

Space

You might think that apart from planets and stars there is nothing here. Despite the fact that this is not far from the truth, outer space is still not exactly a vacuum.

It has a small density of particles. These are clouds of cosmic plasma, stellar dust and cosmic rays.

The blackness of space

It would seem that such a huge number of stars should have filled the space with light, but it is black. In 1823, a German astronomer decided that the brightness of a static universe, evenly filled with stars, should be equal to the brightness of the solar disk. The phenomenon has been called "Olsberg's paradox".

Later it turned out that there is no uniform filling of stars, because some of them did not exist for so long that their light could still reach the Earth now, and the Universe has the ability to expand. Hence the blackness of space, which cannot be evenly illuminated.

The undisputed leader

The sun makes up 99.8% of the total mass of the solar system. Everything else, including our Earth, is just specks of dust in comparison.

It is not surprising that it has kept planets around it for billions of years.

Black holes

The Milky Way contains tens of thousands of black holes, according to a new study. These objects cannot be detected in a calm state.

However, when they interact with a star, scientists can find them using X-rays.

Septillion stars

Approximately this number of stars has the universe. By the way, this number contains 24 zeros after one. Over nine years of observation, scientists have identified 10,000 galaxies in the darkest depths of the universe.

Our Milky Way galaxy alone contains about 100 billion stars. Multiplying this number by the number of galaxies, we got the estimated figure.

However, this is not the final number, because there is a lot of unexplored outer space. According to scientists, this figure will grow in their calculations as technologies are improved to discover new galaxies.

Space has always interested people, because our life is connected with it. The discoveries of space and its exploration are so exciting that you want to learn more and more new things. Today space is the most discussed topic. The mysteries of space do not cease to amaze the eyes of people. Space is that mysterious thing that you want to study.

2. 480 degrees Celsius is the temperature on the surface of Venus.

3. There are a huge number of galaxies in the Universe, which cannot be counted.

5. Time goes much slower near objects with a large gravitational force.

6. All fluids in space freeze and boil at the same time. Even urine.

7. Toilets in space for the safety of astronauts are equipped with special protective belts for the hips and feet.

8. After sunset, with the naked eye you can see the International Space Station (ISS), which revolves around the Earth.

9. Astronauts wear diapers during landing, takeoff and spacewalks.

10. Teachings believe that the Moon is a huge piece that was formed during the collision of the Earth with another planet.

11. One comet, having fallen into a solar storm, lost its tail.

12. On the satellite of Jupiter is the largest volcano Pele.

13. White dwarfs - the so-called stars that are deprived of their own sources of thermonuclear energy.

14. The sun loses 4,000 tons of weight per second. per minute, per minute 240 thousand tons.

15. According to the Big Bang theory, the universe emerged approximately 13.77 billion years ago from some singular state and has been expanding ever since.

16. At a distance of 13 million light years from the earth is a famous black hole.

17. Nine planets revolve around the Sun, which have their own satellites.

18. Potatoes are shaped like moons of Mars.

19. The first time traveler was cosmonaut Sergei Avdeev. It rotated for a long time in the earth's orbit at a speed of 27,000 km/h. In this regard, it got 0.02 seconds into the future.

20. 9.46 trillion kilometers is the distance that light travels in one year.

21. There are no seasons on Jupiter. Due to the fact that the angle of inclination of the axis of rotation relative to the plane of the orbit is only 3.13°. Also, the degree of deviation of the orbit from the circumference of the planet is minimal (0.05)

22. A falling meteorite has never killed anyone yet.

23. Asteroids revolving around the Sun are called small astronomical bodies.

24. 98% of the mass of all objects in the Solar System is the mass of the Sun.

25. Atmospheric pressure at the center of the Sun is 34 billion times higher than the pressure at sea level on Earth.

26. About 6000 degrees Celsius is the temperature on the surface of the Sun.

27. In 2014, the coldest star of the “white dwarf” class was discovered, the carbon on it crystallized and the entire star turned into a diamond the size of the Earth.

28. The Italian astronomer Galileo was hiding from the persecution of the Roman Catholic Church.

29. In 8 minutes, light reaches the surface of the Earth.

30. The sun will greatly increase in size in about a billion years. At the time when all the hydrogen in the core of the sun runs out. Burning will take place on the surface and the light will become much brighter.

31. A hypothetical photon engine for rockets can accelerate a spacecraft to the speed of light. But its development, apparently, is a matter of the distant future.

32. At a speed of more than 56 thousand kilometers per hour, the Voyager spacecraft flies.

33. In terms of volume, the sun is 1.3 million times larger than the earth.

34. Proxima Centauri is our nearest neighbor star.

35. In space, only yogurt will remain on a spoon, and all other liquids will spread.

36. The naked eye cannot see the planet Neptune.

37. The first was the Soviet-made Venera-1 spacecraft.

38. In 1972, the Pioneer spacecraft was launched to the star Aldebaran.

39. In 1958, the National Space Administration was founded.

40. The science that deals with the modeling of planets is called Terra formation.

41. The International Space Station (ISS) has been set up as a laboratory at a cost of $100 million.

42. The mysterious "dark matter" makes up most of the mass of Venus.

43. The Voyager spacecraft carries congratulations discs in 55 languages.

44. The human body would stretch in length if it fell into a black hole.

45. Only 88 days lasts a year on Mercury.

46. ​​The diameter of the globe is 25 times the diameter of the star Hercules.

47. Air in space toilets is cleaned from bacteria and odors.

48. The first dog to go into space in 1957 was a husky.

49. It is planned to send robots to Mars to deliver soil samples from Mars back to earth.

50. Scientists have discovered some planets that rotate around their own axis.

51. All the stars of the Milky Way revolve around the center.

52. On the moon, gravity is 6 times weaker than on earth. The satellite cannot keep the gases released from it. They fly safely into space.

53. Every 11 years, the magnetic poles of the Sun change places in the cycle.

54. About 40 thousand tons of meteorite dust settles annually on the surface of the Earth.

55. The zone of bright gas from the explosion of a star is called the Crab Nebula.

56. About 2.4 million kilometers passes every day the Earth around the Sun.

57. The device, which provides a state of weightlessness, was called "Puke".

58. Astronauts who spend a long time in space often suffer from muscle dystrophy.

59. It takes about 1.25 seconds for the light of the moon to reach the surface of the earth.

60. In Sicily in 2004, locals suggested that they were visited by aliens.

61. The mass of Jupiter is two and a half times greater than the mass of all the other planets in the solar system.

62. A day on Jupiter lasts ten earth hours less.

63. Atomic clocks run more accurately in space.

64. Now aliens, if there are any, can pick up the earth's radio transmissions of the 1980s. The fact is that the speed of a radio wave is equal to the speed of light, so now the radio waves from the 1980s would reach planets located more than 37 light years (data for 2017) from the earth.

65. 263 extrasolar planets have been discovered up to October 2007.

66. Asteroids and comets have been composed of particles since the creation of the solar system.

67. It would take you over 212 years to get to the Sun in an ordinary car.

68. At 380 degrees Celsius, the night temperature on the Moon can differ from the daytime temperature.

69. Once the Earth system mistook a spaceship for a meteorite.

70. A very low musical sound is emitted by a black hole located in the Perseus galaxy.

71. At a distance of 20 light years from Earth, there is a planet suitable for life.

72. Astronomers have discovered a new planet with the presence of water.

73. By 2030, it is planned to build a city on the moon.

74. Temperature - 273.15 degrees Celsius is called absolute zero.

75.500 million kilometers - the largest tail of a comet.

Photo from the automatic interplanetary station "Cassini". In the picture of the ring of Saturn, the planet Earth is indicated by the arrow. Photo 2017

76. The International Space Station (ISS) is equipped with huge solar panels.

77. To travel in time, you can use tunnels in space and time.

78. The Kuiper Belt consists of residual fragments of planets.

79. It is our solar system that is considered young, which has existed for 4.57 billion years.

80. Even light can easily absorb the gravitational field of a black hole.

81. The longest day on Mercury.

82. Passing around the Sun, Jupiter leaves behind a gas cloud.

83. Part of the Arizona desert is used to train astronauts.

84. The Great Red Spot on Jupiter has been around for over 350 years.

85. More than 764 planets of the Earth could fit inside Saturn (if we take into account its rings). Without rings - only 10 planets Earth.

86. The largest object in the Solar System is the Sun.

87. Compressed solid waste from space toilets is sent to Earth.

89. More than 100 billion stars exist in an ordinary galaxy.

90. The lowest density on the planet Saturn, only 0.687 g / cm³. The Earth has 5.51 g/cm³.

The interior of the suit

91. The so-called Oort Cloud exists in the solar system. This is a hypothetical region that serves as a source of long-period comets. The existence of the cloud has not yet been proven (as of 2017). The distance from the Sun to the edge of the cloud is approximately 0.79 to 1.58 light years.

92. Ice volcanoes spew water on the moon of Saturn.

93. A total of 19 Earth hours lasts a day on Neptune.

94. In weightlessness, the respiratory process can be disturbed due to the fact that the blood moves unsteadily throughout the body, due to the lack of gravity.

What do we know about space? Most of us cannot answer the simplest questions about this mysterious world, which, despite this, attracts and interests us. This article presents the most interesting general information about space, which will be useful for everyone to know.

• We (all living beings) are flying in the space environment at a certain speed, which is equal to 530 km/sec. If we take into account the speed of movement of our Earth in the galaxy, then it equates to 225 km / second. Our galaxy (the Milky Way), in turn, moves in space at a speed of 305 km/sec.

• A giant space object - the planet Saturn actually has a relatively small weight. The density of this giant planet is a couple of times lower than that of water. Thus, if you try to drown this cosmic body in water, this will not work.
• If the Jupiter planet were hollow, then all the known planets of our solar planetary system could fit inside it.
• Reducing the periodicity of the rotation of the planet-Earth will move the Moon away from it by about four centimeters annually.
• The first "star catalog" was compiled by Hipparchus (astronomer) in 150 BC.

• When we look at the most distant (dimmest) stars in the night sky, we see them as they were about fourteen billion years ago.
• In addition to our luminary, we have another approximate star "Proskima Centauri". The distance to this space object is equal to 4.2 light years.
• The "red giant" named "Betelgeuse" has a huge diameter. For comparison, its diameter is a couple of times greater than the orbit of our Earth around the star.
• Every year, the galaxy in which our planetary system is located produces about 40 new stars.
• If one spoon (tea) of substance is removed from the "neutron star", then the weight of this spoon will be equal to 150 tons.

• The mass of our luminary is more than 99% of the mass of its entire planetary system.
• The age of the light emitted by our luminary can be equated to only 30 thousand years. It was thirty thousand years ago that a certain energy was formed in the luminary, which to this day reaches the Earth. By the way, solar photons get to the aforementioned planet on which we live, in just eight seconds.
• The eclipse of our star can last no more than seven and a half minutes. The lunar eclipse, in turn, has a longer duration - 104 minutes.
• The "solar wind" is the cause of the mass loss of our luminary. In 1 second, this luminary loses more than 1 billion kg due to this “wind”. By the way, one "windy particle" can destroy an ordinary person, approaching him at a distance of 160 kilometers.
• If our Earth were spinning in a different, opposite direction, then the duration of the year would be less by a couple of days.
• Every day, our planet is experiencing a “meteorite bombardment”. Why don't we see this? Most of the space objects falling on us are very small, so they do not have time to reach the surface and dissolve in our atmosphere.

• Our planet has far more than one satellite. Modern scientists have determined that four objects fly around it at once. Of course, the most famous of them is the Moon. In addition to it, an asteroid (5 kilometers in diameter) flies around us, which was discovered in 1896. To be more precise, this object revolves around the star, but with a certain frequency, the same as ours. Therefore, he is always with us. It is impossible to see it with the naked eye.
• The condensation of "cosmic matter" is the cause of the periodic increase in the mass of our planet. Every 500 years, its mass increases by about one billion tons.
• The Big Dipper is not a constellation, as many people think. In reality, this is "asterism" - a visual cluster of stars that are very impressively distant from each other. Some Ursa stars are even located in different galactic formations.

Initially, the planet Uranus, discovered by W. Herschel in 1781, was called the "Star of George." This was ordered by George III, who wanted the last discovered planet of the Solar System to be named after him.

If two parts of a meteorite come into contact in outer space, they will be soldered together. If this happens on our native planet, then they will not unite, since metals tend to oxidize on our planet. The equipment that astronauts use while working outside the space station spontaneously oxidizes on Earth, so it does not stick together in outer space.

Satellite vehicles created by engineers during their flight in space obey certain physical laws, which were first described by Newton.

Since 1980, sections of our satellite, the Moon, have been officially sold, and they cost a lot. To date, about seven percent of the surface of the natural satellite has been sold. The cost of forty acres is now no more than $150. The lucky person who bought the plot receives a certificate and photographs of his "lunar land".

• In 1992, the official couple Jen and Mark went into space. To this day, they are considered the first and only spouses who visited space together. The couple flew into space on the ship "Endever".
• All those who have been in space for a certain time (1-2 months) grow by about five centimeters due to spinal sprain, which then, after returning to Earth, can adversely affect health.
• A satellite orbital system can photograph three million square kilometers of the Earth in half an hour, an airplane in twelve years, a person by hand in approximately 100 years.
• In 2001, they conducted an interesting experiment, after which they found out that astronauts snoring at home in outer space lose this bad habit.

1. The red giant - the star Betelgeuse, has a diameter larger than the Earth's orbit around the Sun.

2. 19% of solar energy is absorbed by the atmosphere, 47% falls to Earth, and 34% returns to space.

3. The duration of a total solar eclipse does not exceed 7.5 minutes; total lunar eclipse - 104 minutes.

4. If the Earth rotated in the opposite direction around its axis, then there would be two days less in a year.

5. The first star catalog was compiled by Hipparchus in 150 BC.

6. 99 percent of the mass of the solar system is concentrated on the Sun.

7. About forty new stars appear in our galaxy every year.

8. The height of the Nix Olympic volcano, located on Mars, is more than 20 km.

9. When we look at the farthest visible star, we are looking 4 billion years into the past. The light from it, traveling at a speed of almost 300,000 km / second, does not reach us until many years later.

10. In 10 minutes, a spacecraft can photograph up to 1 million square meters. km of the earth's surface, while such a surface is removed from an aircraft in 4 years, and it would take geographers and geologists at least 80 years to do this.

11. The only married couple who flew into space are American astronauts Jan Davis and Mark Lee, who were part of the crew of the Endever shuttle (September 12-20, 1992).

12. A car traveling at an average speed of 60 miles per hour would take approximately 48 million years to reach our nearest star (after the Sun), Proxima Centauri.

13. 12 billion years - this is the age of the oldest galaxies photographed by the Hubble Space Telescope.

14. Over the past 500 years, the mass of the Earth has increased by a billion tons due to cosmic matter.

15. The Southern Cross is the smallest constellation in the sky, but it has the largest concentration of bright stars.

16. The distance to the nearest (after the Sun) star from us (Proxima Centauri) is 4.24 light years.

18. All the planets in the solar system could fit inside the planet Jupiter.

19. The pressure at the center of the Earth is 3 million times higher than the pressure in the earth's atmosphere.

20. The duration of the first spacewalk (Leonov) was 12 seconds.

21. In one minute, the Sun produces more energy than the entire Earth consumes in a year.

22. During the entire existence of the Mir station, 135 people from 11 countries visited it.

23. There are more than 14 tons of various research equipment on board the Mir station.

24. The total mass of the Mir station with two docked ships is more than 36 tons.

25. The duration of one "year" on the planet Pluto is 247.7 Earth years.

26. The first space flight of Yuri Gagarin lasted exactly 1 hour 48 minutes.

27. 2.5 km - the maximum thickness of the ice cover at the north pole of Mars.

29. Asteroids 4147, 4148, 4149 and 4150 are named after the Beatles: John Lennon, Paul McCartney, George Harrison and Ringo Starr, respectively.

30. If you fill a teaspoon with the substance that makes up neutron stars, then its weight will be approximately 110 million tons!

31. The largest lunar crater visible from Earth is called Bailey or "killing field". It has an area of ​​approximately 26,000 square miles.

32. The first black man to fly into space was Guyon Blufo Jr., who was part of the crew of the third flight of the Challenger (August 30, 1983).

33. Earth is the only planet not named after a god.

34. The first maps of the Moon were made in 1609 by Thomas Harriot.

35. Carolyn Schumacher discovered 32 comets and over 800 asteroids.

37. The atmosphere of Mars is 95% carbon dioxide.

39. The first observatory was built in South Korea.

42. The world's largest planetarium is located in Moscow.

43. Mountains on Mars reach a height of 20-25 kilometers.

44. The planet Uranus is visible from Earth with the naked eye.

45. Of the twelve brightest stars, Capella is the northernmost.

46. ​​The night temperature on the moon reaches -150 g
radii Celsius.

47. About 200 thousand meteorites fall to Earth every day.

48. It takes about 8.5 minutes for sunlight to reach Earth.

49. If you stretch the web to the nearest star to us in the constellation Centaurus, then it would weigh five hundred thousand tons.

50. About 27 tons of cosmic dust falls on Earth every day. More than 10,000 tons of dust lands on Earth every year.

51. A postage stamp-sized solar surface area shines with the same energy as 1,500,000 candles.

52. Astronomers believe that in the Universe there are approximately 400 liters of outer space for each atom of matter.

53. Neutron stars are the strongest magnets in the universe. The magnetic field of a neutron star is a million million times greater than the Earth's magnetic field.

54. Ganymede, the largest of the satellites of the planet Jupiter, is larger than the planet Mercury. The diameter of Ganymede is approximately 5269 kilometers.

55. A day on the planet Mercury is twice as long as a year. Mercury rotates around its axis very slowly, and one revolution around the Sun takes a little less than 88 days.

56. For all the time of launching satellites into space, only one of them was destroyed by a meteorite that fell into it (satellite of the European Space Agency "Olympus" in 1993).

57. The diameter of the moon is 3476 kilometers.

58. On Venus, a day is longer than a year.

59. The earth weighs approximately 600 trillion tons.

60. The moon is 80 times lighter than the Earth.