Tuesday, March 31, 2009

Space Weather: Volcanos and a Fireball


MT. REDOUBT: Alaska's Mt. Redoubt volcano has erupted at least 19 times since March 22nd, and several of the most powerful blasts have spewed clouds of ash and sulfurous gas into the lower stratosphere. The last time an Alaskan volcano blew its top (Kasatochi in August 2008), similar clouds caused fantastic sunsets around the Northern Hemisphere. Today's edition of Spaceweather.com features satellite maps of Mt. Redoubt's sulfur dioxide emissions. Using these maps, we can track the volcanic clouds as they drift around the globe and be alert for unusual sunsets and other phenomena when they pass nearby.



ATLANTIC COAST FIREBALL: Last night, March 29th around 9:45 pm EDT, people along the Atlantic coast of the USA from Maryland to North Carolina witnessed bright lights in the sky and heard thunderous booms. It was almost certainly a meteoritic bolide--a random asteroid hitting Earth's atmosphere and exploding in flight. Another possibility is being discussed: A spent Russian rocket body reentered the atmosphere on March 29th. According to data published by US Strategic Command, however, the rocket reentered near Taiwan (24° N, 125° E) more than two hours after the Atlantic Coast event. A natural meteor remains the most likely explanation. Stay tuned for updates and more eyewitness reports.

Every time a major eruption occurs, the world cools down a little. When Tambora erupted in 1815, the world was summerless that year.

We might be seeing cooler tempatures again this summer. At the very least we will see some exquisite sunsets.

1 comment:

Faultline USA said...

Wow some really neat pics. I'm up for a cooler summer too.