Researchers discover a planet so big it might not be a planet after all

Too big for a planet, too small for a star.

Enceladus’ hidden ocean is kept warm by porous core

The findings could have important consequences for the prospect of finding alien life there.

What the oldest spiral galaxy can teach us about how the Milky Way evolved

It was around just 2.6 billion years after the Big Bang.

Looking to understand dark matter, a duo of scientists turned the Earth into a huge sensor

Legen — wait for it — science!

Long-term exposure to microgravity changes brain structure of astronauts

Seems like the brain of astronauts starts to float upward.

NASA Scientists find 20 potentially habitable planets

Trick or treat? I’m dressed as a habitable planet.

Boiling water shapes Mars’ landscape, experiment reveals

It’s not heat, but low pressure that drives this boiling.

For the first time ever, our solar system is getting an outside visitor

Put the kettle on, we have a visitor.

Massive 2.3-gigapixel image of Fornax Galaxy Cluster documents galactic ‘serial killer’

You’ll feel very, very small after reading seeing this image.

NASA wants Curiosity Rover to resume drilling on Mars

It took a bit of creative tinkering, but significant progress has been reported.

Cassini is no more, but it left us one of the most memorable photos of Saturn

The spacecraft’s legacy lives on.

How Spanish scientists described a solar flare in 1886

He was one of the pioneers of studying solar activity.

NASA discovers Mars has a magnetic tail twisted by solar wind

Mars has an invisible magnetic tail and it might contribute to Martian atmospheric loss.

Researchers believe they’ve found a great place for a moonbase — thanks to a volcano

Building a moonbase in a lava tube. Doesn’t that sound awesome?

Astronaut shows what fidget spinners can do in outer space

NASA just wins, can everyone stop with the fidget spinner videos now?

You can now use Google Maps to explore other moons and planets

You can explore the solar system from the comfort of your home.

Evidence keeps pilling up in favor of the mysterious Planet Nine

A ninth planet 10 times bigger than Earth might be lurking far away within the solar system.

China’s first space station is about to come crashing down on Earth, and we don’t really know where

No reason to worry, just an 8-ton space station crashing down on Earth.

Why the gravitational waves splashed by the merger of two dying stars spells a revolution in astronomy

This was an amazing week in science — with much more to come.

NASA observatory highlights the importance of studying CO2 on Earth: it’s connected to everything

Groundbreaking data allows us to study carbon dioxide in unprecedented detail.