The size of the largest asteroid is option (b) 1,000 km.
Rock-filled spacecraft called asteroids orbit the sun but are too tiny to be referred to as planets. They are sometimes known as tiny planets or planetoids.
Asteroids are in the millions and range in size from hundreds of miles to a few feet. The combined mass of all asteroids is less than that of the moon of Earth.
Despite their size, asteroids can be dangerous. There have already been many, and there will be more in the future. That is one of the reasons why asteroids are studied by scientists, who are keen to understand more about their composition, orbits, and physical attributes. We want to be informed if an asteroid is heading in our direction.
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