Scientists are grappling with a cosmic mystery: why does the Universe behave differently on massive scales compared to our ...

It was 1972 and Apollo astronauts Harrison “Jack” Schmitt and Eugene Cernan had just stepped onto the moon's surface to begin ...

By studying galaxy clusters separated by hundreds of millions of light-years, Penn physicist Patricio Gallardo and ...

The solar system is projecting with gold but scientists can't quite figure out where all this hard-to-make metal is being created.

The Nancy Grace Roman Space Telescope, named after NASA’s first chief astronomer, is now complete after more than a decade of development.

NASA unveiled a new telescope on Tuesday to scan vast swaths of the universe for planets outside our solar system and probe ...

Rather than slowly condensing over millions of years, the first building blocks of Earth and other planets may have formed ...

In this video, we explore the 13.8 billion year history of our Universe, condensed into a single calendar year of 365 days.

NASA unveiled a new telescope on Tuesday (Wednesday, Manila time) to scan vast swathes of the universe for planets outside ...

16. Despite Mercury's extreme temperatures (like, up to 800 degrees Fahrenheit), it's believed to have ice at its north and ...