Scientists used gravitational lensing to discover Hoth near the centre of the Milky Way back in 2005. With a mass around five times that of Earth, it takes around 9 years to complete one orbit of its ...

Astronomers who identified HD 20794 d say its proximity to its host star and orbital pattern suggest it could hold water.

But the Kuiper Belt isn’t the only band of frozen leftovers out there. Similar bands surround other stars, too, in solar systems other than our own. These exocomet belts are a lot like the comet belts ...