According to new simulations, many, even most, planets get ejected from their star early in their history Star Trek ...

The planets in the Solar System are all different but we can divide them ... Our Sun is just one of many billions of stars in our galaxy, which is called the Milky Way. The Milky Way is a spiral ...

All planets are made of gas, ice, rock and metal, and models of how planets form usually assume that these materials don't ...

We know of several hundred billion stars in our galaxy, at least 100 billion galaxies ... potential habitability - at ...

Anyone who looked up at the sky on Wednesday night may have caught a glimpse of an impressive sight: all the planets of our solar system on display. The phenomenon — also known as a "planet ...

Discover the Fermi Paradox — why, in a vast universe full of stars and planets, haven't we found extraterrestrial life? Explore the theories behind this great mystery. The universe is vast ...

Whether a galactic environment has the right conditions for habitable planets to form could depend on how the black hole in ...

It is likely they all have masses less than Earth's ... so there are likely to be far more planets in our galaxy than there are stars. Most of the planets that have been discovered are close ...

A new study presents a compelling new model for the formation of super-Earths and mini-Neptunes -- planets that are 1 to 4 times the size of Earth and among the most common in our galaxy.