SOLAR SYSTEM

Detailed explanation-1: -Each planet, moon and asteroid have their own gravitational pull defined by their density, size, mass, and proximity to other celestial bodies.

Detailed explanation-2: -Their surfaces heat up during the day and cool down at night, giving off radiation that can act as a sort of mini-thruster. This force, called the Yarkovsky effect, can cause rotating asteroids to drift widely over time, making it hard for scientists to predict their long-term risk to Earth.

Detailed explanation-3: -Asteroids and other small bodies, like comets, are also kept in orbit around the Sun by the Sun’s large gravitational pull-even when they are at great distances from the Sun. They can also be pulled into orbit around a planet-like Mars’ two moons-or impact a moon or planet.

Detailed explanation-4: -The C-type (chondrite) asteroids are most common. They probably consist of clay and silicate rocks, and are dark in appearance. The S-types ("stony") are made up of silicate materials and nickel-iron. The M-types are metallic (nickel-iron).

Detailed explanation-5: -Asteroids aren’t all round like planets. They have jagged and irregular shapes. Some asteroids are hundreds of miles in diameter, but many more are as small as pebbles. Most asteroids are made of different kinds of rocks, but some have clays or metals, such as nickel and iron.