A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

Scientists analyzing moon rock from China’s Chang’e 6 mission find the far side of the moon may be colder deep down than the ...

Old rocket parts and decommissioned satellites are whizzing around in low Earth orbit, where they risk colliding with the ...

Lying between Mars and Jupiter is a massive ring of rock debris—the asteroid belt. Now thin, it’s fading away gradually.

Exoplanet hunters Christopher Watson and Annelies Mortier explain the long search for a 'twin Earth' capable of sustaining ...

Smithsonian National Postal Museum, Washington, D.C.

The impact that carved out the South Pole-Aitken basin on the moon appears to have come from the north, not the south as ...

NASA confirms four near-Earth asteroids will pass Earth safely, measuring from bus to house-sized, with no impact risk on 5th ...

On October 6 1995, at a scientific meeting in Florence, Italy, two Swiss astronomers made an announcement that would transform our understanding of the universe beyond our solar system. Michel Mayor ...

NASA’s Juno probe, which revealed new details about Jupiter’s atmosphere and storms, may have stopped transmitting data after years of exploration.

Asteroid 2025 TC will pass Earth on October 3, 2025. This house-sized space rock measures 44 feet across. It travels at over ...