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!
Space

Small asteroid impact today over the ocean near Australia

A small asteroid impact will occur in the next few hours near NW Australia. The meteor should harmlessly burn up in Earth's atmosphere and poses no danger.
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.
Space

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.