Small asteroid hit Earth’s atmosphere Sunday near Australia

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.

Reef fish survival threatened by motorboat noise

Reef fish exposed to motorboat noise can end up smaller and struggle to escape predators, says new research into dangerous underwater noise.

These microbes in Antarctica don’t live anywhere else

Researchers have discovered that some microbes in Antarctica are unique to the icy continent and are found nowhere else on Earth.

Labor Day: Learn its history and traditions

Labor Day is a federal US holiday that falls on the 1st Monday in September and is considered the unofficial end of summer.

If we find life beyond Earth, how will nations respond?

If we ever find life beyond Earth, how will the nations of the world respond? A group of experts give 3 possibilities: cooperation, competition and isolation.

Octans and Apus circle the south celestial pole

Octans and Apus are 2 constellations that you have to be in the Southern Hemisphere to see. Plus, Octans is home to the south celestial pole.

Mars’ southern hemisphere is unusually hot deep underground

A new study from Caltech shows that Mars' southern hemisphere is much hotter than expected deep below the surface. Why is that?

Cassiopeia the Queen ascends in September and October

Cassiopeia the Queen is an easy-to-find constellation. It has the shape of a W or M. Look for it in the north-northeast sky on September and October evenings.

Saturn’s south pole decagon confirmed! A mysterious 10-sided figure

Saturn’s south pole is now known to have a giant, evolving 10-sided wave, similar to the Saturn north pole hexagon. Read more about it here.

Hurricane triplets spin across the Pacific Ocean

Rare hurricane triplets are currently spinning across the Pacific Ocean: Lowell, Karina and Marie. Did El Niño play a part? Find out here.