extraterrestrial life
Our Favorite Hypothetical Alien Megastructures
We turn to science, science fiction, and hypotheses between the two, to speculate what could be floating around mystery star KIC 8462852.
NASA Has Strongest Evidence Yet That There's Flowing Water on Mars
Those flow marks we thought were salty liquid water are most likely salty liquid water, according to a new study.
These Scientists Say There Could Be Life on Rosetta’s Comet
It's a radical explanation for Comet 67P's features.
There's Evidence of Liquid Water on Mars, But Don't Expect it to Support Life
Researchers suggest Mars could have its own water cycle.
The Building Blocks of Life Aren't Unique to Our Corner of the Galaxy
In a few billion years, will life blossom in the MWC 480?
The Microbial Yearbook That Will Help Us Find Aliens
Scientists are discovering just how colorful our alien neighbors might be.
Aliens Are Probably Everywhere, Just Not Anywhere Near Humans
If there’s intelligent life in the cosmos, it’s probably nowhere we can get to anytime soon
These Earth-Like Planets Aren't That Earth-Like After All
The search for habitable planets is complicated when inhospitable worlds look friendly from afar.
There's a New Test for Life on Mars, and It's More Accurate Than Ever
Somebody send an isotope-ratio mass spectrometer over there already.
This Sunshield Will Keep the World's Most Powerful Space Telescope from Frying
With 1600 square feet per layer and an SPF of one million, the James Webb Space Telescope’s sunshield is the most badass component of an already badass space observatory.
What Proof of Life on Mars Might Look Like
The Nakhla martian meteorite is the gift that keeps on giving. Did it just give again?
The Best Method for Finding Aliens Will Involve a Ton of False Positives
Exoplanet atmospheres are really diverse, which makes it tough to know what's simply a weird planet and which ones might have life.