Tag Archives: impact events


The solar system’s early days were chaotic.  Our celestial neighborhood began as a rotating cloud of gas and dust.  Some 4.6 billion years ago, the massive center of this cloud condensed into the sun.  Leftover gas and dust, spurred by … Continue reading

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Memento Mori

2012 DA14 will pass close to Earth around midday today (Seattle local time), right as I’ll sit down to lunch.  The 190,000-ton asteroid, identified only last year, will wander within 17,000 miles of us, closer than some of our satellites.  It … Continue reading

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