Researchers revealed that the planet, named HD 20794 d, has a mass six times greater than Earth's and orbits within the ...

Earth’ planet has shown many of the key factors to supporting life as we know it, according to Professor Luke O’Neill.

Feb. 18 marks the 95th anniversary of the discovery of our outermost planet-not-planet. Here's what to know about the short ...

A White House science advisor recently war-gamed with space agency heads worldwide to devise a planet-saving defense to an ...

Deep within Earth’s mantle lie two enormous, continent-sized structures known as LLVPs. Scientists once believed these ...

"Shorelines are great locations to look for evidence of past life." Today, Mars is a chilly desert of rock and dust — but 4 ...

Another night of observations revealed there is little to fear from the football-field-sized Asteroid 2024 YR4.

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Chances an asteroid may hit Earth in 2032 dropped to near zero, astronomers say. Here's what to know about 2024 YR4.

NASA and ESA confirm asteroid 2024 YR4 poses nearly zero threat to Earth in 2032, with new observations reducing its risk ...