June 27, 2008
Eye on the Universe
From Harvard Magazine:
The “Pillars of Creation” may be the most iconic Hubble photograph ever taken. “Located in the Eagle Nebula, the pillars are clouds of molecular hydrogen, light years in length, where new stars are being born,” says Aguilar. “However, recent discoveries indicate these pillars were destroyed by a massive nearby supernova some 6,000 years ago. This is a ghost image of a past cosmic disaster that we won’t see here on Earth for another thousand years or so—and a perfect example of the fact that everything we see in the universe is history.” It was in the Eagle Nebula that proplyds, dusty protoplanetary disks that only the Hubble telescope’s high-resolution optics can detect, were observed for the first time. (This photograph was stitched together from shots taken by four cameras. One of the cameras takes a magnified view of its quadrant, which—when shrunk to fit the scale of the other three—leaves dark space in the upper right corner.)
More here.
Posted by Azra Raza at 08:04 AM | Permalink






Comments
Beautiful images. Thanks, Azra.
Posted by: Jared | Jun 27, 2008 2:04:15 PM
Sorry for my foolish question (perhaps i should read the full article before i ask this!): how is it that we know these pillars were destroyed some 6,000 years ago, but we will witness the event in the far future? Does not all information travel at the same speed of light, with nothing traveling faster?
Said more simply: how can we know before we see? Is this an extrapolation or an observation. What am i missing here?
Posted by: jean-paul | Jun 28, 2008 3:14:10 AM
jean-paul
I wondered the same thing. The Spitzer Telescope site gives this explanation of the timeline.
Posted by: Neal Deesit | Jun 29, 2008 1:41:50 AM
Post a comment