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A black hole duo is headed for a collision. The active central black holes of 2 distant merging galaxies are only 300 light-years apart.
The international Cloud Appreciation Day is September 13, 2024. Learn how to participate here and see a gallery of beautiful clouds.
An unusual occurrence of gravitational lensing created this view of a question mark galaxy. The discovery reveals details about early galactic evolution.
Sun news for September 13: One or Two CMEs reached Earth, sparking geomagnetic storms up to G3. Auroral displays followed. Flaring activity was high.
Visible planets and night sky guide for September 2024. The bright waxing gibbous moon will hang near Saturn in the east after sunset on September 15 and 16.
Jupiter's moon Io has a new volcano! The volcano appears in Juno spacecraft images from February 2024. Streams of lava and sulfur stains mark its flanks.
Two of Polaris Dawn astronauts completed the 1st ever civilian spacewalk this morning. But all 4 astronauts were exposed to the vacuum of space. A new record!
For the 1st time, astronomers have watched a star's surface bubble in magnificent detail. The bubbling is hot gases on a star 178 light-years away.
A new species of titanosaur, a large plant-eating dinosaur with a long neck, was discovered near Cuenca, Spain. It lived 73 million years ago.
Corona Australis is a dim constellation lying below the Teapot asterism of Sagittarius. Its sparkling, curving shape befits its name.
When DART spacecraft hit asteroid Dimorphos, it released debris that should arrive at Mars and Earth, creating the 1st human-made meteor shower for the planets.
Hurricane Francine came ashore in southern Louisiana on Wednesday afternoon as a category 2 storm. There are already reports of damage.
A recently-published study suggests the red giant star Betelgeuse may have a sun-size companion which might affect the star's brightness and variability.
The Great Square of Pegasus consists of 4 stars of nearly equal brightness in a large square pattern. It's a great jumping-off point for star-hopping.
Researchers uncovered a rare instance of large sharks preying on one another. The finding shows the complexity of shark interactions and resulting impacts.
Scientists in China, studying samples brought back by the Chang’e-5 mission, say that the moon's volcanoes were active as recently as 120 million years ago.
Opposition is when Earth passes directly between the sun and an outer planet, placing the outer planet on the opposite side of the sky from the sun.
Don't miss Saturn at opposition on and around the night of September 8, 2024. That's when our planet Earth passes between the sun and Saturn.
Boeing's Starliner capsule landed safely - without its crew - on Friday night. The 2 astronauts are still stuck aboard the ISS, slated to return in February.
Enjoy this gallery of deep-sky photos for August 2024 from our EarthSky community. If you have a great photo to share, send it in too. We love to see them!