The answer: There are approximately 2,000,000,000,000 galaxies in the universe – that’s 2 trillion. Astronomers don’t know ...

I’ve spent much of my long life studying — and trying to understand — the history of the universe. Along the way, I have been constantly reminded that science is essentially international: Science ...

We live in a world defined by inches, feet and miles (or centimeters, meters and kilometers, if you prefer), and it’s not difficult for most of us to ...

A giant exoplanet has just been confirmed about 400 light-years from Earth. Named TOI-4465 b, it stands out with a mass six times greater than Jupiter's and unusual orbital characteristics.