You can probably imagine an early universe without planets or stars — but what did the universe look like before time existed? This fall, you could find out by taking a free class led by prominent ...

A professor with a popular Udemy-hosted MOOC is trying out his astronomy course on Coursera next, with the hope of increasing completion rates. It'll be the first massive open online course offering ...

If you’re one of the millions of Americans who looked at the eclipse this week and wondered what other cool things you might be able see in the sky, this guide is for you. Whether you want to spy on ...

After a two week hiatus (we had our usual modulo(10) outtakes reel, then a week off for Thanksgiving), Crash Course Astronomy is back on the air! This week, I take a look at dark matter. Well, not a ...

Take a look at all the incredible things you can see with your naked eye. Today on Crash Course Astronomy, Phil invites you to head outside and take a look at all the incredible things you can see ...

Musicians have often taken inspiration from the stars – from David Bowie’s Starman to the Weeknd’s Starboy – but Seneca College professor of astronomy Matt Russo has taken that relationship a step ...

For this week’s Crash Course Astronomy episode, we take a skidding halt at the edge of the planetary solar system and scream back inward to the vast space between Mars and Jupiter. Before I go on, I ...

We're rounding out our planetary tour with ice giants Uranus and Neptune. Today we're rounding out our planetary tour with ice giants Uranus and Neptune. Both have small rocky cores, thick mantles of ...