A telescope bigger than a galaxy

Astronomers have figured out how to use the gravity of distant galaxies to bend light and magnify images, forming gigantic telescopes that see deeper into the cosmos than ever before.

Watch a near-Earth asteroid online Sunday night

Asteroid 2014 CU13 will pass about 8 lunar distances (2 million miles or 3 million km) away. Both the Virtual Telescope Project and Slooh will be broadcasting.

Cosmos is coming Sunday night

If you watch this three-minute long trailer for the new Cosmos without wanting to tune in to the whole series ... you are made of sterner stuff than me.

Planet X still doesn’t exist

Astronomers have searched for a Planet X for over a century. Now NASA's WISE mission suggests Planet X will never be found.

A river of plasma guards us from solar storms

MIT scientists identify a plasma plume that naturally protects the Earth against high-energy solar activity.

Hubble Telescope sees asteroid mysteriously break in pieces

Asteroid P/2013 R3 has been caught in the act of breaking into pieces. This is the first time astronomers have seen an asteroid break up.

Another asteroid flies through Earth-moon system on Thursday

For the second time in two days, an asteroid is sweeping safely through the Earth-moon system. How to watch online.

Monster black hole spins at half the speed of light

Light speed is about 300,000 kilometers per second (186,000 miles per second), so this black hole is spinning almost unbelievably fast.

Every red dwarf star has at least one planet, says new study

Red dwarfs make up at least three quarters of the stars in the universe. A new study suggests that virtually all red dwarfs have planets orbiting them.

Spiral galaxy spills blood and guts

The streaks emanating from this galaxy are hot young stars, encased in wispy streams of gas torn away from the galaxy as it moves through space.