Asteroids
The asteroid belt is the region of solar system which is the located between the orbits of the planets Mars and Jupiter.It has got irregularly shape the diameter of asteroid belt is more than 400km. The Asteroid bet belt has got only dwarf planet Ceres.Early in the life of the solar system,
dust and rock circling the sun were pulled together by gravity into
planets. But not all of the ingredients created new worlds. A region
between Mars.
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Occasionally people wonder whether the belt was made up of the remains
of a destroyed planet, or a world that didn't quite get started.
However, according to NASA,
the total mass of the belt is less than the moon, far too small to
weigh in as a planet. Instead, the debris is shepherded by Jupiter,
which kept it from coalescing onto other growing planets.script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js">
Observations of other planets are helping scientists to better understand the solar system. According to a developing theory known as Grand Tack, in the first 5 million years of the solar system, Jupiter and Saturn are thought to have moved inward toward the sun before changing direction and heading back to the outer solar system. Along the way, they would have scattered the original asteroid belt before them, then sent material flying back to refill it.
"In the Grand Tack model, the asteroid belt was purged at a very early stage and the surviving members sample a much larger region of the solar nebula," John Chambers of the Carnegie Institution for Science wrote in a "Perspectives" piece published online in the journal Science
Our solar system isn't the only one to boast an asteroid belt. A cloud of dust around a star known as zeta Leporis looks a lot like a young belt. "Zeta Leporis is a relatively young star — approximately the age of our sun when the Earth was forming," Michael Jura said in a statement. "The system we observed around zeta Leporis is similar to what we think occurred in the early years of our own solar system when planets and asteroids were created." A professor at the University of California, Los Angeles, Jura has since passed away.
Other stars also contain signs of asteroid belts, suggesting that may be common.
At the same time, studies of white dwarfs, sun-like stars at the end of their lifetimes, show signatures of rocky material falling onto their surface that suggest such belts are common around dying system