Video Archive

  • Chandra Spots High-Velocity Knots of Stellar Debris in Kepler’s Supernova Remnant

    New images from NASA’s Chandra X-ray Observatory show small knots of metal-rich debris in the remnant of Kepler’s supernova, also known as SN 1604, are moving up to 37 million km per hour (23 million mph). These are extremely high speeds for an explosion that happened over 400 years ago as seen from Earth.

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  • Across 10 Million Stars, Not a Single Whisper of Alien Technology

    In a comprehensive search of a patch of the Southern sky, not even a hint of alien technology has been detected at low radio frequencies.

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  • Asteroid samples escaping from jammed NASA spacecraft

    A NASA spacecraft is stuffed with so much asteroid rubble from this week’s grab that it’s jammed open and precious particles are drifting away in space, scientists said Friday.

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  • This black-hole collision just made gravitational waves even more interesting

    An unprecedented signal from unevenly sized objects gives astronomers rare insight into how black holes spin.

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