Was Earth born as a Blue Planet? Discover where water came from with a video from an intriguing science playlist. The resource covers the three most likely origins of water, how scientists differentiate between comet and asteroid water,...

The North Star changes — it was previously Thuban but now is Polaris, and in the future, it will be Vega. The video discusses the cycles observed in the sky with only your eyes. It focuses on the zodiac constellations and why they are...

Our future literally depends on the sun. The video introduces the sun as a star. It explains the plasma magnetic fields, sunspots, solar flares, coronal mass ejections, and more. It concludes with how we rely on the sun, how we protect...

Heart of gold, gold mine, good as gold, gold digger. Why is gold so fascinating and such a focus of popular expression? Is it due to rarity, its shine, or some other factor? Here's a video that focuses on how gold is made and...

While a cosmic distance ladder sounds like fun, it is actually the name given to the variety of methods astronomers use to determine the distance to objects in space. This video examines the method of determining the distance of a star...

Are there more stars in the universe than grains of sand in the sea? This video looks at the way scientists attempt to answer this question by using data from NASA and focusing on observable space.

Winter scenes are displayed one after another with elements of time-lapse showing clouds moving and stars coming out, all to the tune of a lovely piano. Rainbows and sunrises are also displayed. This is a soothing video that is very...

Astronomers study a lot of gorgeous things, but nebulae might be the most breathtakingly beautiful of them all. Nebulae are clouds of gas and dust in space. Some nebulae are small and dense, others can be dozens or hundreds of light...

Knowing that the universe is expanding, and how quickly it's expanding allows scientists to run the clock back 14 billion years to the way the universe began- with a bang. [13:23]

A video exploring what makes up the Milky Way galaxy. Understand how you can see part of the Milky Way by looking up into the night sky! [3:09]