An interstellar comet changed its chemistry after passing the Sun, revealing hidden layers and a surprising mix of carbon ...

Even at a glance, the planets in our solar system are wildly diverse. Huge and small, airless and densely packed with ...

Usually, comets are dormant blocks of rock and ice. They only wake up when they get close to a star. The intense heat causes ...

Donald Trump announced his administration would begin identifying and releasing UFO-related information earlier this year.

Deep within massive rocky exoplanets, hidden oceans of molten rock may be generating powerful magnetic fields in an ...

In these science fiction books, extraterrestrial beings are sympathetic, horrifying and everything in between.

Peter Dinklage is about to have another franchise under his belt. The actor has joined the cast of “Alien: Earth” Season 2 at ...

The interstellar comet 3I/ATLAS was the third object ever discovered in our solar system that originated from another star system. Despite a viral conspiracy theory, NASA officials have repeatedly ...

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Forbes contributors publish independent expert analyses and insights. Adam Frank is an astrophysicist exploring our place in the Cosmos. As a practicing astrophysicist and science communicator I see ...

Add Yahoo as a preferred source to see more of our stories on Google. A composite view of Mars taken by the Viking I and II probes. NASA/USGS In September, NASA announced the discovery of a possible ...

This image presents a grid of color-enhanced astronomical observations, each depicting a circumstellar disc—structures of dust and gas surrounding stars. Every square in the grid represents a ...