Space
Small asteroid hit Earth’s atmosphere Sunday near Australia
A small asteroid hit Earth's atmosphere harmlessly on Sunday. Scientists spotted it just 6 hours before impact. It was the 13th asteroid spotted before impact.
Earth
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.
Sun

Sun news: Sun-stuff bursts could trigger strong auroras

Sun news September 7, 2026: A convoy of CMEs is racing our way. G1-G2 storms are likely, with G3 possible. Auroras may reach New York and London!
Astronomy Essentials
Tonight

Visible planets and night sky guide for September

Visible planets and night sky guide: Tomorrow before sunrise, look for bright Jupiter near the thin crescent moon. This is a can’t-miss celestial event!
Earth

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.
Human World

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.
Human World

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.
Constellations

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.
Space

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?
Constellations

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.