While the composition of gas and dust in a molecular cloud is fairly uniform, everything changes once a star begins to form.

A planet-size object that possibly once visited the solar system may have permanently changed our cosmic neighborhood by warping the orbits of the four outer planets, a new study ... like object ...

and these materials combined together to form the inner planets. The outer four planets (Jupiter, Saturn, Uranus, and Neptune) are called gas giants. When the solar system formed, gaseous ...

Exoplanets have captured the imagination of the public and scientists alike and as the search continues for more, researchers ...

This solar system consists of four inner rocky planets and four outer gas giant planets as well as an asteroid belt, containing thousands of huge rocks, dwarf planets and comets. Our solar system ...

A planet-size object that possibly once visited the solar system may have permanently changed our cosmic neighborhood by warping the orbits of the four outer planets, a new study suggests.