In February 2013, a stunning sight in the sky over Russia made international headlines. The light of an asteroid hurtling toward Earth was brighter than the sun.

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What happened in the skies over Siberia on June 30, 1908? This video shows what the site looked like on the 100th anniversary of the mysterious explosion, which scientists think was caused by an asteroid or comet entering the Earth’s atmosphere.

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This video explores the asteroid blast over Siberia in 1908 known as the Tunguska Event. See what the site looked like when the first scientists arrived to study the effects of the blast.

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To celebrate Asteroid Day, we’re highlighting some resources on CurioCity that can help you learn more about asteroids.

Learn More about Asteroid day

Astrophysicist Brian May (who also happens to be lead guitarist for the rock band Queen) talks about Asteroid Day (June 30), an event designed to raise awareness of the threat to Earth from asteroids. Learn more at

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Bill Nye explains the threats that different sizes of asteroids can pose to life on Earth, how we can detect them, and ways that we can protect Earth from those asteroids. (7:07 min.) Learn more about asteroids at

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This video from the European Space Agency looks at the dangers posed by asteroids, space debris, and cosmic radiation to life on Earth, as well as what we can do to monitor and protect from these threats.

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In this case study, students will analyze video and print resources to explore the characteristics and potential effects of near-space objects in our solar system on the Earth.

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The first step in protecting Earth from killer asteroids is to find potentially lethal asteroids. NASA's WISE (Wide-field Infrared Survey Explorer) mission has been cataloguing asteroids that could pose a threat to life on Earth.

Learn More about Killer asteroids: we're wise to you now!

You’d never guess there was a liquid ocean out there. Or weather. Or a Death Star.

Learn More about Objects of the solar system