Puzzling planets perpetrating perpendicular paths perplex people

Nearby star HD 3167 has planets orbiting at right angles

By Phil Plait 2 weeks ago

Astronomers 'find' a second planet orbiting Beta Pictoris due to extremely tiny wiggles by the first planet

By Phil Plait 1 month ago

Can you build a satellite made out of… wood?

By Phil Plait 3 months ago

Don’t panic! But a gigantic comet is currently inbound toward the Sun

By Phil Plait 5 months ago

A six-planet system dances in time to the tune of gravity

By Phil Plait 10 months ago

Does Planet Nine exist? An alien world 300 light years away gives hope

By Phil Plait 11 months ago

The dance of Neptune's water sprite moons

By Phil Plait 1 year ago

Astronomers find the closest known black hole to Earth!

By Phil Plait 1 year ago

Earth had a minimoon, but then it burned up in our atmosphere

By Phil Plait 2 years ago

How do you calculate the orbit of an object in space?

By Phil Plait 2 years ago