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Alien Life

The search for evidence of life beyond Earth has fascinated scientists and science fiction writers alike for centuries.

A wide-angle photograph shows a robotic rover positioned on the right side of a dusty, rocky reddish-orange landscape, angled slightly toward the viewer. The detailed vehicle, covered in intricate machinery, thick tires, and a tall camera mast, sits on uneven, cracked ground. In the background, a vast, pale orange sky fades over distant, hazy hills stretching toward the horizon under bright, diffuse sunlight.
Alien Life, Solar System

Curiosity discovers largest organic molecules yet on Mars

SPHEREx in space (artist's concept)
Alien Life, Cosmology, Robotic Spaceflight

SPHEREx launches to conduct a cosmic census

Venus as seen by Mariner 10
Alien Life, Solar System

Strange microbes on Earth might help us understand life on Venus

Alien Life, Observing

You’re almost certainly not being visited by aliens

Artist's impression of Kepler-1649 c
Alien Life

Could deuterium be the key to finding aliens? 

Illustration of DNA
Alien Life

How we might look for life in the universe — even if we can’t recognize it

Alien Life, Cosmology

Dark energy sheds light on life in the cosmos

Ceres as imaged by Dawn
Alien Life, Solar System

Short-lived organics on Ceres hint at a past ocean — and conditions ripe for life

Alien Life, Exotic Objects

The “Wow! Signal,” not surprisingly, was a dud

Alien Life, Science

Why we aren’t alone in the universe — but might as well be

Cheyava Falls rock on Mars
Alien Life, Science, Solar System

Did Perseverance find hints of ancient martian life?

Alien Life, Exoplanets, Science

Greenhouse gases could indicate alien life — if we ever find them

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