The Kepler telescope has run out of fuel and officially entered retirement. Luckily, there is a replacement on the way to continue our observation of the stars.

Astronomers expect TESS to find thousands more planetary systems.

Rogue planets are the drifters of the galaxy, wandering interstellar space alone. Now it turns out they could have company in the form of moons — and perhaps even sustain life that hitched a ride on them.

We all know that the worst part of going on holiday is waiting to get on the plane. Don't deny it.

Look up at the night sky.

When NASA first started planning the Kepler mission, no one knew if the universe held any planets outside our solar system. Thousands of exoplanets later, the search enters a new phase.

For centuries, humans have wondered about the possibility of other Earths orbiting distant stars.

An extraordinary astronomical phenomenon that will not happen again until 2037.