A Satellite Falling Out of Orbit Embarks on Its Final Mission

Before reentering our atmosphere, the telescopes onboard NASA’s Neil Gehrels Swift Observatory have been restarted to take their last observations.

Astronomers Have Completed the Largest Map of Space. Yes, You Can Play With It.

The intricate, 5.6 trillion-pixel map covers approximately 75 percent of the sky and includes about 4 billion celestial objects.

Japan Is Launching a Probe to Collect the First-Ever Samples From a Martian Moon

The mission to Phobos, Japan’s first Mars probe launch in 28 years, may reveal new information about our closest planetary neighbor.

What the Heck? Another Perfect Geometric Shape Has Been Detected on Saturn

The discovery adds to the planet’s history of strange atmospheric phenomena that scientists don’t full understand.

The Diamond Moon and Other Astronomical Events To See in September 2026

September is full of opportunities to expand your knowledge of the night sky. Mark your calendars.

Scientists Create the Littlest Big Bang to Study the Universe’s Origins

The discovery redefines how large atoms need to be to produce the extreme state of matter found in the early universe.

NASA’s Nancy Grace Roman Space Telescope Has a Hidden Technological Leap

Astronomers will test equipment that, if it’s successful, will one day be crucial for discovering Earthlike planets.

How to See the Partial Lunar Eclipse and Blood Moon on August 27

The eclipse will obscure about 93 percent of the moon’s surface. Here are the peak times and tips for the best viewing experience.

NASA’s New Space Telescope Is Poised to Discover Hidden Facets of the Universe

The Nancy Grace Roman Space Telescope is expected to discover as many as 200,000 new planets and reveal details about the elusive nature of dark matter and dark energy.

NASA Cancels Its Rescue Mission for the Aging Swift Telescope

The LINK probe was supposed to use robotic arms to capture Swift and lift it into a safe orbit. Problems with its control system forced NASA to call off the attempt.