Did the sun swallow a planet early in its history? Models show a super-Earth might have spiraled into the sun and left a fingerprint we can still see today.
If black holes have extra matter around them - aka hidden hair - astronomers could find it by measuring the different characteristics of these ripples.
A new study from MIT shows that peptides in Venus' clouds could survive in the sulfuric acid droplets and fold into the shapes need for biological life.
A small asteroid impacted Earth's atmosphere harmlessly on Sunday. Scientists spotted it just 6 hours earlier. It was the 13th asteroid spotted before impact.