Artist's impression of Planet Nine – a suspected “wide-orbit” planet – with the Sun in the distance; Neptune's orbit is shown ...

"Its occurrence is like finding a tropical seed in Arctic ice – indicating either an unexpected local environment or ...

A team of researchers has outlined how a new "direct fusion drive" propulsion system could allow us to reach Sedna this ...

Asteroids are usually grouped into three main types based on what they are made of: C-type, S-type and M-type.

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...

Here's everything you need to know before taking the leap. Do solar panels make it harder to sell your house? Most of the time, they don't. "Overall, they're perceived as a value, because they're ...

Close stellar encounters could change the structure of our planetary system, potentially dooming Earth or other worlds to ...