JWST is now fully focused

Witness the power of a fully focused and very nearly operational JWST.

By Phil Plait 3 weeks ago

The biggest comet ever seen shows off its hair for Hubble

UN271 is ~137 km across, bigger than any other object like it ever seen.

By Phil Plait 1 month ago

What can the oldest star ever seen tell us about how stars were born?

Earendel, the furthest known star from Earth, could reveal secrets of star formation.

By Elizabeth Rayne 1 month ago

Psst! Wanna see an actual Hubble image of a planet forming around a nearby star?

Theorized exoplanet AB Aurigae b now directly seen in photos.

By Phil Plait 1 month ago

Hubble sees the farthest star in the Universe

A gravity assist helps the 'scope see a star 12.9 billion light-years away.

By Phil Plait 1 month ago

Leaky mini-Neptune planets are losing their air and becoming super-Earths

This explains a kind of planet normally missing in solar systems.

By Phil Plait 2 months ago

Line of sight

How do you find the distance to objects quadrillions of km away?

By Phil Plait 3 months ago

Peeling back the layers on Eta Carinae, the galaxy's most terrifying star

Eta Car is a monster, surrounded by the debris of violent eruptions.

By Phil Plait 3 months ago

How two galaxies got the gift of a black hole

So that's how some galaxies got their black holes...

By Elizabeth Rayne 3 months ago

At year's end, a spectacular spiral galaxy reminder that science improves upon itself

NGC 691 and the search for understanding in the Universe.

By Phil Plait 4 months ago