New Mars and Deimos pics from revealing Hera flyby

Hera is on its way to investigate the aftermath of our collision with an asteroid. But first it flew past Mars. See the new Mars and Deimos pics here.

A total lunar eclipse looks red. Why?

Coming up ... the total lunar eclipse of March 13-14, 2025. At maximum eclipse, the moon will look red. But why? Earth's atmosphere is the key.

Uranus discovered by accident on this date in 1781

William Herschel spotted Uranus in 1781 during a routine survey of the stars. It was the 1st new planet found since ancient times.

Powerful supernovas led to at least 2 mass extinctions

Researchers said that 2 of Earth's 5 mass extinction events were likely the result of nearby supernovas destroying Earth's ozone layer.

Lunar eclipse: Tips for watching the eclipse tomorrow

A total lunar eclipse is coming up overnight on March 13-14, 2025. Here are some tips for watching and enjoying the total lunar eclipse.

Remains of destroyed planet found lurking in Helix Nebula

Mysterious X-ray signals coming from the Helix Nebula most likely originate from the debris of a destroyed planet near a white dwarf star, a new study suggests.

128 new Saturn moons just announced. Incredible!

Astronomers have discovered a whopping 128 new Saturn moons. This brings Saturn's moon total to 274, by far the most of any planet in our solar system.

New map of Andromeda galaxy and its colossal ecosystem

The Hubble Space Telescope has captured a new bird's-eye view and 3D map of the Andromeda galaxy and its ecosystem of 36 dwarf satellite galaxies.

Enormous rogue super-Jupiter is a surprisingly complex world

New observations by Webb of rogue super-Jupiter SIMP 0136 show that its atmosphere is more complex than thought, explaining its variations in brightness.

Why Mars is red … and the exciting possibilities for life

Are we wrong about why Mars is red? An iron oxide called ferrihydrite might be responsible. If so, this also further supports ancient Mars being habitable.