"There really is something very different about how these giant planets form versus how small planets like Earth form." ...

What if water and hydrogen don’t stay separated inside planets like Earth and Neptune? New research from UCLA and Princeton ...

Even more exciting, the model suggests that some Earth-like planets could form in the habitable zone—the region around a star ...

This illustration shows what the planetary system may look like from ... light-years from Earth, it is the fourth-closest ...

Earth has a nearly circular orbit, but some planets outside our solar system, called exoplanets, have very elliptical orbits.

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.

A small, cool star in distant space plays host to something amazing. Scientists have discovered that at least seven Earth-sized worlds circle the star TRAPPIST-1, a ultracool dwarf star only about ...

A new study by Rice University researchers Sho Shibata and Andre Izidoro presents a compelling new model for the formation of super-Earths and mini-Neptunes—planets that are 1 to 4 times the ...

A new study by Rice University researchers Sho Shibata and Andre Izidoro presents a compelling new model for the formation of super-Earths and mini-Neptunes — planets that are 1 to 4 times the size of ...