"Alien Earth" just delivered its most thought-provoking episode yet! This is my full spoiler review for Episode 4, ...

From the Star Wars spin-off The Mandalorian to the classic series Star Trek: The Next Generation, these are the best sci-fi shows that feature aliens.

An artist’s impression of the rocky, habitable-zone exoplanet Kepler-168b. Credit: NASA Ames/NASA/JPL–Caltech/Tim Pyle (Caltech) New research suggests that technological civilizations in the Milky Way ...

Michael L. Wong is a NASA Sagan Postdoctoral Fellow who works at Carnegie Science’s Earth & Planets Laboratory and studies astrobiology and planetary science. As an astrobiologist, I am often teased ...

Creative Commons (CC): This is a Creative Commons license. Attribution (BY): Credit must be given to the creator. The study of ecosystems, both natural and artificial, has historically been mediated ...

Cinema has the power to take us to exciting new places, both real and imagined. Through the portal of science fiction, we can be transported to incredible, even impossible new worlds. We’re not just ...

Astronomers will soon begin searching for biosignatures, atmospheric gases or surface features produced by life, on potentially habitable planets. Since methane is the only biosignature that the James ...

What life is out there in the universe beyond our planet, and how long can we sustain life on Earth? These are the two big questions at the center of astrophysicist Adam Frank's new book. It's called ...