Caleb Scharf
Should We Really Be Messing with Asteroid Orbits?
With one small error or manipulation, cosmic interference would spell disaster.
We Might Already Speak the Same Language As ET
Alien communication could utilize quantum physics, so SETI needs a new way to listen.
A Mirror of Our Best Selves
An astrobiologist annotates what we are seeing in this James Webb Space Telescope image.
We Better Think Twice About What We Say to ET
Extraterrestrials could take our intergalactic message in entirely the wrong way.
The Worrisome Rise of NFTs
An astrobiologist says non-fungible tokens do not bode well for our species’s future.
A Wrinkle in Nature Could Lead to Alien Life
There may be more than one way to tune a universe for life.
Looking for Life on Mars
An astrobiologist and a director on the joys and challenges of filming space science.
What Is Life?
An astrobiologist finds the heart of his work in a new novel by Richard Powers.
The Universe Has Already Made Almost All the Stars It Will Ever Make
Black holes are cosmic dimmers.
Is the Universe Open-Ended?
An intriguing proposal about what makes reality tick under the surface.
