A team of astronomers claims to have sniffed out a “biosignature” in the atmosphere of a distant planet called K2-18b. But ...

During a brief but dramatic chapter in Earth's history about 41,000 years ago, the planet’s magnetic field nearly collapsed.

The latest discovery is the strongest hint yet of biological activity outside our solar system. But this does not mean that ...

Near a planet far, far away astronomers have found traces of chemicals that on Earth are only produced by living beings.

One such moment was when space craft sent back images of the Earth for the first time. Another is the discovery of life on ...

Additionally, ancient humans may have ramped up their use of ochre. This naturally occurring pigment is composed of iron ...

To get access to ad-free episodes, exclusive podcasts, unlimited briefings, stories, and transcripts, and other valuable bonus features sign up today. This week, while Dave Bittner is out, Joe ...

The U.S. is in the midst of a second Space Race, and NASA is in a time crunch. How can it keep ambitions for the Moon and ...

In late 2017, a mysterious object tore through our solar system at breakneck speed. Astronomers scrambled to observe the fast ...

The idea that extreme heat could one day cause a mass extinction and end the dominance of humans is not as farfetched as it ...

One part of this plan would require increasing the planet’s atmospheric pressure, and one scientist suggests that capturing ...

A new trail in this southern Arizona city plots the most visitor-friendly astronomy stops—and there are plenty to choose from ...