Hubble going deep into space to look back at history.
(Credit: NASA)The Hubble Space Telescope has taken the deepest near-infrared image of the universe in history, the National Aeronautics and Space Administration announced on Tuesday.
The image, which was taken in August by the "HUDF09" team, features galaxies that formed just 600 million years after the Big Bang. NASA said that not only are those the oldest galaxies ever seen, but the data that can be extracted from the image will provide "insights into how galaxies grew in their formative years early in the universe's history."
Hubble was able to capture such detail, thanks to the Wide Field Camera 3, which was installed earlier this year. The camera captures light from "near-infrared wavelengths," allowing it to peer deeper into the galaxy than its predecessors. "The light from very distant galaxies is stretched out of the ultraviolet and visible regions of the spectrum into near-infrared wavelengths by the expansion of the universe," NASA said.
Although the image might just look like a series of lights to the untrained eye, NASA said 12 scientific papers have already been submitted by those who studied the data contained in the image. It's entirely possible that this discovery will shed more light on galaxy formation and the universe's history.
But that Hubble shot is only the beginning. NASA wrote that the Hubble observations are "trailblazing a path for Hubble's successor, the James Webb Space Telescope, which will look even farther into the universe than Hubble, at infrared wavelengths." NASA said the James Webb Space Telescope should be launched in 2014.
Until then, we can feast our eyes on the astounding image returned from Hubble. Note the detail. Even more amazing: this image was taken of just a small slice of the universe. Imagine what else is out there.
If you'd like to learn a little more about Hubble's discovery, click here.
A planetary nebula captured with Hubble.
(Credit: NASA)Space is an interesting subject. It arguably matters most to our knowledge of life. Understanding issues affecting the universe today will help us recognize them as they impact our lives going forward. And since we simply don't have the ability to explore space the way it would be required to fully understand our history, it's the Hubble Space Telescope that we must rely on to provide that for us.
But it's not without its critics. With each new service mission (including the latest), critics have contended that Hubble simply costs too much for what we're getting. And according to one U.S. legislator, it's to the detriment of other programs.
"We have to make hard choices about whether a Hubble mission is worth it now, when moving ahead is likely to have an adverse impact on other programs, including quite possibly other programs in astronomy," Sherwood Boehlert, a former Republican congressman from New York, said in 2005.
Hubble's cost is certainly high. According to NASA, the telescope has cost the United States $9.6 billion since its launch in 1990. In that time, critics remind us that scientists still haven't determined the real age of the universe; they still don't know, for sure, how the galaxy was formed, and they wonder if all those pictures Hubble sends back are really all that important.
Yes, they are.
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