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What else can I help you with?
Do asteroids vary greatly in size?
Yes. Asteroids can be anywhere from the size of a grain of sand to larger than the Earth.
What layer of the atmosphere protects Earth's surface from being hit by asteroids?
The entire atmosphere will burn up small asteroids (meteors), but larger ones will strike the Earth. This is how the Caribbean Sea was created.
Do stars become asteroids in space?
Stars are tremendously larger than asteroids and do not become asteroids.
What the asteroids are larger or smaller than planets?
Planets are generally larger than asteroids. Asteroids are small rocky bodies that orbit the Sun, while planets are larger celestial objects that have cleared their orbit of other debris. Some asteroids can be quite large, but they are still dwarfed by the size of planets.
Does meteor and asteroids look alike?
No. meteors are the bits of dust and stone that burn up on entering Earth's atmosphere. Asteroids are larger rocky lumps floating round in space. We hope the larger ones do not meet Earth's atmosphere.
What are the group of asteroids that may occasionally cross earth?
Asteroids that occasionally cross the orbit of Earth are known as Near Earth Asteroids. Asteroids that both cross the orbit of the Earth and are large enough to pose a significant threat in the event of an impact are known as Potentially Hazardous Asteroids.
Do asteroids comets and meteoroids pose danger to earth?
Meteoroids generally do not pose much of a risk as they are generally small enough to burn up in the atmosphere, and do not reach the surface. Asteroids and comets are larger and can cause potentially catastrophic damage if they strike Earth.
Are asteroids larger than stars?
No. Asteroids are tiny compared to stars.
Are meteoroids larger than comets but larger than asteroids?
no
What is bigger meteor or asteroid?
Meteors are smaller fragments of asteroids or comets that enter Earth's atmosphere and burn up, causing a bright streak of light. Asteroids are larger rocky objects that orbit the sun. In general, asteroids are bigger than meteors.
Are rocks made of asteroids and how?
The material that forms rocks ultimately does come from asteroids. But the rocks on earth have been destroyed, re-formed, and altered numerous times by geologic processes, so it would be erroneous to say they are "made of asteroids." As to how: The planets originated from a disk of gas and dust orbiting the young sun. The dust coalesced into larger particles, which eventually grew into asteroids. These asteroids collided with one another, forming larger and larger bodies. Some of these became planet-like objects called planetesimals, which collided to form proto-planets. Eight of these proto-planets eventually became the planets we know today, including Earth.
How often do 1km or larger asteroids hit earth?
Fortunately not very often - because if one does hit, it would be a major catastrophe.
