Astronomers have spotted a rare "second-generation" exoplanet closely orbiting the nearby white dwarf HS 0209+0832.

Explore the fascinating search for intelligent alien life and the monumental signs of advanced civilizations across the ...

When Christopher Columbus first came ashore in the Caribbean in 1492, he made first contact with what was, to him, an unfamiliar world. While his journey took place on ships rather than spacecraft, ...

Exoplanet observations reveal that Earth-like rocky planets require a certain concentration of those heavier elements.

Scientists have traced a series of mysterious radio signals to a gigantic alien world 63 light-years from Earth.

An alien radio signal from K2-155 d? Are there any alien civilizations out there? For several decades, scientists have been searching for evidence that they exist. That effort is collectively known as ...

Belgian physicist Francis Halzen on Tuesday won the Nobel physics prize for groundbreaking work using Antarctic ice to ...

The season 1 finale resolved several of our lingering questions while leaving the door open for a second season. Co-creator ...

The best hard sci-fi books, however, don't require over a hundred pages to truly get going. Whether it's the sudden arrival ...

A group of NASA scientists have headed on an expedition to Scotland after they seemingly discovered alien life in rocks that ...

The Martian, Station Eleven, Dark Matter, and more make up our list of the best sci-fi books from every year of the 2010s.

NASA’s Nancy Grace Roman Space Telescope has completed key guidance tests and given its Coronagraph Instrument its first look ...