2014年7月15日 · Asteroids are meteoroids' big cousins: they range in size from 1 meter to larger than 100,000 meters, whereas meteoroids are generally smaller than 1 meter in diameter, but they are made from the same rocky or metallic materials.

2019年12月26日 · While asteroids are rocky, comets are made of ice, dust, and small amounts of volatile compounds, such as ammonia, methane, and carbon dioxide. Comet 46P/Wirtanen glows vaguely near the Pleiades; this is good example of what many small "fuzzy" comets look like.

2024年6月29日 · Asteroids are made of rock and metal and broken away pieces of planets. They are grouped into three categories: Stony, Iron-Nickel, and a mixture of the two. Most asteroids that we know about fall ...

2022年10月18日 · Saturn's rings are made up of dust, rocks , asteroids, and moons. What is the univere made up of? the universe is composed of stars, planets, satellites, asteroids, meteoroids, dust, and gas.

Asteroids are made out of rock. there's an asteroid belt outside Earth, and now Astronomers are still discovering them. Meteors was the same thing as Asteroid, so you don't really had to know them.

2006年2月6日 · The two bodies have densities of only 0.8 gram per cubic centimeter, which is way too low for a rocky, asteroid-like object, unless they are extremely porous. The low densities strongly suggest that both bodies are made primarily of water ice, with perhaps a coating of dirt. This is the same bulk composition of comets and small Kuiper Belt objects.

Comets are mostly water and carbon dioxide, with a little bit of other materials, including some organic molecules. Asteroids are mostly carbonaceous or iron (metal).

2024年5月26日 · Comets are composed of ice, dust, and rocky material, while asteroids are primarily made of rock and metal. Both comets and asteroids can pose a potential threat to Earth if they collide with our ...

The most common ones are made mainly in carbon. Take up to 75% of the total asteroid belt. As known as the C-type asteroid.The second most common is the S-type, very rich is silicate. Taking about ...

2024年6月14日 · Asteroids can have a wide range of temperatures depending on their distance from the sun and surface composition. On average, most asteroids have temperatures that range from -100°C to 100°C ...