Sunday, March 17, 2013
Light Echoes...
Remember V838 Monocerotis? It was a science sensation in 2002 when it was briefly the brightest star in the Milky Way galaxy. APOD is featuring a recent Hubble photo of it today, showing the dust clouds that are being lit by the (now) 11 year old sphere of light emitted by V838 Mono back in 2002. Full resolution version here...
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Of course, with a distance from us of about 20,000 light years, the event itself happened 20,000 years ago. Sometimes I'm astonished at this glimpse and wonder what the night sky would have been like say, 20,000 or 100,000 years ago. Where there more events like this going on? was the universe any more active that far back? what about a 100 million?
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