EarthSky
A grid placed across a portion of the sky.

Astronomers discover 83 more supermassive black holes

Astronomers used a cutting-edge camera mounted on one of the world’s largest telescopes to discover 83 new quasars – powered by central, supermassive black holes – in the very early universe.

Born in March? Here’s your birthstone

Happy birthday to all you March babies. Your month has 2 birthstones – the aquamarine and the bloodstone.

Why beware the Ides of March?

The Ides of March are March 15. We in modern times probably wouldn’t know about them – or know we’re supposed to beware of them – if it weren’t for William Shakespeare.

Today in science: Uranus discovered by accident

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

How can I see a green flash?

It’s said that once you’ve seen a green flash, you’ll never go wrong in matters of the heart. Here’s all you need to know to be able to see one, plus great pics!

What is earthshine?

In the coming evenings, you might glimpse a pale glow on the unlit part of the crescent moon in the west after sunset. It’s called earthshine.

How the moon got its sunburn

Every object, planet or person traveling through space has to contend with the sun’s damaging radiation – and the moon has the scars to prove it.

Black hole found near Milky Way’s heart

It’s not supermassive, but only an intermediate-mass black hole, near the center of the Milky Way. It might be one of over 100 million quiet black holes lurking unseen in our galaxy.

A huge black bee next to a honeybee

Found: World’s biggest bee

Last seen in 1981 and thought lost to science, Wallace’s giant bee has been rediscovered in the forests of Indonesia.

Use Big Dipper to find North Star

The 2 outer stars in the Big Dipper’s bowl point to the North Star, aka Polaris. Give it a try.