Astronomers now estimate there is at least one planet for every star in our galaxy. These worlds, called exoplanets, are ...

New research finds the galaxy's most common stars host many super-Earths but almost no sub-Neptunes, reshaping planet ...

Sky This Week is brought to you in part by Celestron. Friday, April 24Venus passes 0.8° due north of Uranus at 1 A.M. EDT.

Around stars like our Sun, the most common planets aren't giant Jupiters but smaller cousins: sub‑Neptunes, which resemble ...

Gliese 581c is a planet that’s about 20 light-years away, hanging out in the constellation Libra. It circles its star pretty ...

TESS 10,000 planets discovery reveals hidden worlds in archived data, expanding our view of the Milky Way and planetary ...

If you look at a Neanderthal skull and a Homo sapiens skull, they’re visibly different: Neanderthal skulls are lower and longer, whereas ours tend to be rounder. However, those differences probably ...

By peering deep inside Orion's star-forming gas clouds, radio astronomers have been able to directly measure the masses of ...

Below the waves, giant marine reptiles, such as the fearsome 4m (13ft) long mosasaurs, were the undisputed apex predators. In artistic reconstructions of these ancient oceans, cephalopods – the animal ...

Some octopuses that lived over 72 million years ago were as long as whales. These huge predators may have been the largest ...