An asteroid is a small space object (with a diameter of more than 30 meters) of irregular shape. It is smaller than all existing planets, moves in its orbit around the Sun and has no atmosphere, but it can have satellites.
15 interesting facts about asteroids
- Many asteroids are large. Asteroids more than 10 kilometers across can pose a threat to the Earth. The fall of a large asteroid may have caused an ice age on Earth.
- The asteroid belt between the orbits of Mars and Jupiter is believed to have formed after the destruction of Phaethon.
- Asteroids with a diameter of more than 10 kilometers are the most dangerous for the population of the Earth. It is not worth worrying, since bodies of this size have not yet crossed the earth's orbit.
- To assess the danger of asteroids, the Turin scale is used, according to which asteroids are assigned a score from 0 to 10. Zero means no danger, ten means a guaranteed collision that can destroy civilization.
- Asteroid from the ancient Greek language means "star-like". Interestingly, the name was invented by the composer Charles Burney.
- With a sufficient level of technological development, the extraction of elements such as platinum, cobalt and other rare minerals on an asteroid and their subsequent delivery to Earth can be very profitable.
- Ceres, the largest asteroid, has a regular spherical shape and is 1, 000 kilometers in diameter.
- All asteroids belonging to the asteroid belt between Mars and Jupiter have a total mass of 4 percent of the total mass of the Moon;
- The asteroid has its own holiday. June 30 is officially considered Asteroid Day.
- A meteorite, an asteroid and a meteor are one and the same celestial body. If an asteroid enters the Earth's atmosphere, it is recognized as a meteor. An asteroid that reaches the earth's surface is called a meteorite;
- Most asteroids are either rocky or metallic. Metallic ones are heavier and have a better chance of passing through the Earth's atmosphere without any particular obstacles and landing. Stony ones usually burn up in the atmosphere or, if they are very large, explode closer to the surface.
- When all the asteroids in the Asteroid Belt are combined, they form a space body less than 1, 500 kilometers in diameter, which is less than half the Moon.
- The name of an asteroid can only be obtained after its orbit has been more or less accurately calculated. There are times when an asteroid gets its name only a few decades after its discovery.
- On November 8, 2011, asteroid 2005 YU55 is about 400 meters in diameter. flew at a distance of about 324.6 thousand km from the Earth, which is about 85% of the distance from the Earth to the Moon.
- In 2005, the US Congress challenged NASA to detect 90% of all near-Earth objects larger than 140 meters by 2020. They do not track small asteroids all the time, paying special attention only to those that are at least a kilometer in diameter.