Habitability

Binary Dwarf Stars Found Orbiting Each Other Every 20 Hours. They Were Once Almost Touching

A team of astrophysicists has discovered a binary pair of ultra-cool dwarfs so close together that they look like a…

3 weeks ago

Could Next-Generation Telescopes See That Earth Has Life?

While the Earth absorbs a lot of energy from the Sun, a lot of it is reflected back into space.…

3 weeks ago

We Could Spread Life to the Milky Way With Comets. But Should We?

Here's a thorny problem: What if life doesn't always appear on planets that can support it? What if we find…

2 months ago

Could Life Survive on Frigid Exo-Earths? Maybe Under Ice Sheets

Our understanding of habitability relies entirely on the availability of liquid water. All life on Earth needs it, and there's…

2 months ago

What’s the Best Mix of Oceans to Land for a Habitable Planet?

Earth is about 29% land and 71% oceans. How significant is that mix for habitability? What does it tell us…

2 months ago

Curiosity Arrives in a Salty Region of Mars. Was it Left Over From a Dying Sea?

The Curiosity rover has now reached its primary target on Mount Sharp on Mars, the mountain in the middle of…

4 months ago

If Earth Were an Exoplanet, it Would Still be Tricky to Figure Out if There’s Life Here

How would Earth appear to alien astronomers? What would their observations tell them about Earth if they searched the heavens…

4 months ago

These are the Best Places to Search for Habitable Exomoons

Our Solar System contains eight planets and more than 200 moons. The large majority of those moons have no chance…

9 months ago

Planet Found in the Habitable Zone of a White Dwarf

Most stars will end their lives as white dwarfs. White dwarfs are the remnant cores of once-luminous stars like our…

12 months ago

We Might Know Why Mars Lost its Magnetic Field

Mars is a parched planet ruled by global dust storms. It's also a frigid world, where night-time winter temperatures fall…

12 months ago