Black holes are great at sucking up matter. So great, in fact, that not even light can escape their grasp (hence the name).

It's official: astronomers found a new dwarf planet in our Solar System - and it's the most distant object ever observed in our Solar System.

Nooooo.

Scientists have known for some time that Earth's atmosphere loses several hundred tons of oxygen each day. They understand how this oxygen loss happens on Earth's night side, but they're not sure how it happens on the day side.

While the presence of liquid water on Mars remains an ongoing topic of intense interest, we know that there is plenty of water ice adorning the Red Planet - and boy can it ever look amazing, as new images from the European Space Agency's Mars Expre

We still don't know what dark matter is, but new research has brought us closer to figuring out where it might sit.

NASA's InSight lander, which touched down on the Red Planet late last month, placed its seismometer suite onto the red dirt yesterday (Dec. 19).

An unhackable internet?

In an incredible world first, astrophysicists detected multiple planets in another galaxy earlier this year, ranging from masses as small as the Moon to ones as great as Jupiter.

According to a straightforward interpretation of general relativity, the Big Bang wasn't the start of 'everything'.

What would convince you that aliens existed? The question came up recently at a conference on astrobiology, held at Stanford University in California.

SpaceX Chief Executive Elon Musk says a redesigned test vehicle for the company's next-generation reusable launch system could be ready for initial flights early next year.

Replication is nature's greatest magic trick. Watch closely, and before your very eyes you'll see a single cell blur into two virtually identical copies. Presto.

If quitting smoking is one of your New Year's resolutions, you might want to consider cutting back on your drinking, too. New research has found that heavy drinkers who are trying to stop smoking may find that reducing their alcohol use can also help them…

In this edition of Mobile Astronomy, we'll discuss you how to make the most of New Horizons' historic flyby of Ultima Thule Jan. 1.

Less than 12 hours before the closest flyby of the most distant solar system object ever, the New Horizons team released an image of its target, Ultima Thule.