Watch Saturn’s moon Iapetus hide a bright star

The Cassini spacecraft, orbiting Saturn, captured this mini-eclipse of a star by Iapetus on August 10.

A magnetar at the heart of our Milky Way

Radio astronomers are using a pulsar with a strong magnetic field to investigate a supermassive black hole at the center of our galaxy.

Dwarf galaxy caught ramming into a large spiral

X-ray observations have revealed a giant cloud of superheated gas in a galaxy about 60 million light-years from Earth.

New NASA image shows Potentially Hazardous Asteroids

These are all the asteroids that would cause significant regional damage to our human civilization in the event of impact.

Gemini’s much-anticipated infrared instrument goes on-sky

Gemini Observatory’s latest instrument, a powerful infrared camera and spectrograph at Gemini South, reveals its potential in a series of striking on-sky commissioning images.

Gases left by Perseid meteors a boon to these astronomers

Enjoy this year’s Perseid meteor shower which peaks on the night of August 11-12; astronomers say they will, too!

Hubble Space Telescope solves a 40-year mystery

What is the origin of the Magellanic Stream, a long ribbon of gas stretching nearly halfway around our Milky Way galaxy? Now we know.

If we landed on Jupiter’s moon Europa, what would we want to know?

So far, scientists have seen a fractured, ice-covered world with tantalizing signs of a liquid water ocean - a possible home for microbial life - under its surface.

The sun’s magnetic field is about to flip

Something big is about to happen on the sun. According to measurements from NASA-supported observatories, the sun's vast magnetic field is about to flip.

Hubble sees the fireball from a kilonova

NASA's Hubble Space Telescope has detected a new kind of stellar blast called a kilonova that's about 1,000 times brighter than a regular nova.