Unseen planets kick a ring of debris off-kilter around a nearby star

We may be seeing what the Sun was like when it was a rebellious teen.

By Phil Plait 6 hours ago

Protons are 5% smaller than previously thought

That's actually a pretty big deal for a small particle.

By Phil Plait 2 days ago

The Tarantula shreds its enormous cocoon

Winds from stars blow away gas for hundreds of light-years.

By Phil Plait 3 days ago

What happens when a star engulfs its planets?

Hint: Bad things, to both.

By Phil Plait 4 days ago

Earth’s core is speeding up and slowing down

Go home, Earth’s core. You’re drunk.

By Phil Plait 5 days ago

A comet got really close to the Sun and completely freaked out

It literally blew chunks.

By Phil Plait 6 days ago

Two (kinda) Earth-sized rocky planets found around a nearby red dwarf star

Earth-like they ain't, though.

By Phil Plait 1 week ago

This one weird trick allows Hubble to make a huge infrared image of the sky

Fast and Furious: Hubble Drift.

By Phil Plait 1 week ago

Wait. *How* big are neutron stars again?

Bottom line: Neutron star sizes are hard to figure out.

By Phil Plait 1 week ago

It’s getting harder for life in Venus’ atmosphere to exist

Could there be bacteria in the atmosphere of Venus that eats sulfur? Wellll…

By Phil Plait 1 week ago