Rocky planets like our Earth may be far more common than previously thought, according to new research published in the ...

The Milky Way, the galaxy that houses our solar system, is an enormous and complex structure filled with mysteries, motion and magnificent phenomena. Despite being our galactic home, many of us know ...

For a decade and a half, astronomers have been on the trail of a galactic mystery. In 2011, a project that surveyed the Milky Way galaxy for exoplanets — which are planets beyond our solar system — ...

Using gravitational microlensing, scientists have discovered a rare, large planet at the edge of the Milky Way. The planet is only the third to be found on the outskirts of our galaxy's dense central ...

For centuries our solar system was the only planetary system known to humans. We had no proof other worlds existed beyond those in our own cosmic backyard, and we imagined that if other planetary ...