Sentences with phrase «leftover building blocks of planets»

The leftover building blocks of planets, near - Earth objects orbit the sun in highly elliptical orbits, and sometimes graze or hit Earth.

Not exact matches

In the Solar System, the asteroid belt contains the leftover building blocks for the terrestrial planets Mercury, Venus, Earth, and Mars, so planetary scientists study the asteroids to gain a better understanding of how rocky, and potentially habitable planets are formed.
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