After decades of searching, astronomers may have finally stumbled upon the first moon known to exist beyond our solar ...

Exoplanets are planets outside Earth's solar system. In 1995, a gas giant named 51 Pegasi b, which orbits a star similar to Earth's sun, etched its name in history as the first exoplanet ever ...

Using direct imaging, astronomers have found a brown dwarf that could help test technology for taking snapshots of Earthlike ...

In our solar system, Earth is one of but eight planets – nine, if you really want to count Pluto – and the only one remotely hospitable to life. And as technology advances, astronomers only expect to ...