The first unmistakable signal from another intelligence would rank alongside fire and writing in the story of our species, ...

Global temperature increases over the past thirty years, visualized. Credit: NOAA/NCEI Earth's average global temperatures have been steadily increasing since the Industrial Revolution. According to ...

Could the first confirmed signal from an extraterrestrial source be less a hello than a goodbye? Astrophysicist David Kipping ...

(NewsNation) — Astronomers and other scientists have concluded that, with so many stars in the universe, there must be planets around some of those stars that support carbon-based life. And some of ...

Long before scientists discovered that other stars in the universe host their own planetary systems, humanity had contemplated the existence of life beyond Earth. As our technology matured and we ...

Apollo astronaut Buzz Aldrin and the lunar module Eagle during the first human touchdown on the Moon, one of the fantastical scenes transmitted to more than half a billion space aficionados back on ...

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The TRAPPIST-1 solar system, depicted in this artist's impression, might harbor Earth clones with oceans and rich atmospheres. (Photo digital Illustration by NASA/NASA via Getty Images) A young ...

Before you submit an error, please consult our Video Help page. PBS Space Time is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android smartphones, ...