For generations, artists and science-fiction writers have imagined alien landscapes beneath twin sunsets. The image became iconic in popular culture long before astronomers confirmed that planets ...

Planet Earth could be giving out its own signals, which could in turn be detected by distant astronomers on an alien planet ...

This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. The Milky Way galaxy has more than 400 billion stars in it. Over the last few decades, ...

Scientists say moons around rogue planets wandering through the galaxy could remain warm enough for life thanks to tidal heating and hydrogen-rich atmospheres. These dark, starless worlds may have had ...

Planets orbiting stars beyond the solar system come in all shapes and sizes but mostly fit into a few categories: large and hot gas giants, super-Earths that are slightly larger than our planet, ...

Astronomers have identified a clue hidden in the light of certain stars that's already led them to discover seven new alien planets, with more expected to come. To be clear, these alien planets likely ...

There is no chance in hell our species will be able to reach another Earth-like planet in the Universe in the foreseeable future, so the only way we can get a sense of the habitability of such places ...

Grain-sized remnants of alien technology may get caught in solar wind and land on plants and moons close to us ...

Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for first contact with extraterrestrial life. Tardigrades—a type of invertebrate ...