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Scientists believe life on alien worlds may be constrained by the same factors as on our planet.

Science fiction suggests that life on other planets, if it exists, is likely far more advanced than life on Earth. A recent ...

But the universe also hosts worlds that break away from this familiar image. Some planets drift alone through space without a ...

Astronomers do not yet have a reliable, routine way to detect and confirm an Earth-size, Earth-mass planet in an Earth-like orbit around a Sun-like star using current planet-hunting methods. The ...

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, ...

The picture-perfect launch of NASA’s Roman Space Telescope could push forward the space agency’s ultimate search for life across the Milky Way, says a leading astronomer.

While long-fabled technologies like Smell-O-Vision are still a long way off from ever being a reality, astronomers can still technically smell stuff deep in space without actually having to get a ...

When/if alien life ever cruises toward Earth in big spaceships, we’re probably not just going to see it; we’re going to hear it via narrow radio signals. If an extraterrestrial civilization wanted to ...