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Use Google To Search The Heavens By Bill Christensen

posted: 8 January 2007 12:39 p.m. ET
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Google has
joined the Large
Synoptic Survey Telescope (LSST) Project, which intends to complete the
world's largest survey telescope
by 2013. Google will work with nineteen universities and national labs that are
designing and building the telescope.
The proposed telescope
itself will be a ground-based 8.4 meter, 10-square-degree field instrument
capable of providing digital imaging across the entire sky. In an endless
series of ten-second exposures, the LSST will cover the available sky every
three nights over a period of ten years. The telescope will be built atop Cerro
Pachón in Chile.
The LSST camera is designed
to provide a wide field of view - sampling more than 0.2 arcsecond; spectral
sampling will be done in five or more bands from 400 nanometers (nm) to 1040
nm. The format for the image will be a circular mosaic providing more than 3
gigapixels per image. This is approximately 1,000 times the resolution of a
typical digital camera photo.
Google and the LSST project
share some important characteristics; both groups seek to organize massive
quantities of data and then share it in the most useful possible form. Every
night that the LSST operates, it will store over thirty terabytes (30,000
gigabytes) of data. Google will provide assistance in the following areas:
- organizing
the flow of large parallel data streams
- processing
and analyzing the data streams in a continuous 24/7, fault-tolerant manner
- providing
a dynamic view of the night sky for the lay public, as well as for
specialists.
Google's VP
of Engineering, William Coughran, remarked that "Google's mission is to
take the world's information and make it universally accessible and useful. The
data from LSST will be an important part of the world's information, and by
being involved in the project we hope to make it easier for that data to become
accessible and useful."
The LSST will help
astrophysicists explore the mysteries of dark
matter and dark
energy, as well as providing a movie-like picture of objects that change
rapidly - like exploding supernovae.
The LSST will also help with discovering near-Earth
asteroids (it should be able to resolve objects as small as 100 meters) as
well as distant Kuiper
Belt objects.
This project is not
Google's first step into the sky. Google has already collaborated with NASA in its iEarth program.
Every day, NASA's Earth
Observing System (EOS) transmits terabytes of data back to ground stations. The
Google Earth application already provides easy access to worldwide maps. iEarth
is an application that superimposes this data on top of 3D maps provided by
Google Earth.
Picking a spot on the Earth
will prompt the application to look through EOS and convert that data into a
file viewable from Google Earth.
Google's iEarth application and its collaboration
with the LSST project (iUniverse?)
have a remarkable precursor in science fiction. In Neal
Stephenson's excellent 1992 novel Snow
Crash, Hiro Protagonist is given an amazing service - ordinarily
available only to the wealthy - for free.
There is
something new: A globe about the size of a grapefruit, a perfectly detailed
rendition of Planet Earth, hanging in space at arm's length in front of his
eyes. Hiro has heard about this but never seen it. It is a piece of CIC
software called, simply, Earth. It is the user interface that CIC uses to keep
track of every bit of spatial information that it owns - all the maps, weather
data, architectural plans, and satellite surveillance stuff.
(Read more about CIC
Virtual Earth)
Even sci-fi visionaries
like Stephenson would have called a ten year-long movie of the entire
observable universe too futuristic to be believable in a novel. Nevertheless,
Google engineers will present the universe in the palm of your hand, just like
Stephenson's Virtual Earth.
Read more about Google/NASA
iEarth. Don't forget their obsession with the "inner space" of
humanity's imagination; take a look at Encyclopedia
Googlactica - Google To Put All Human Knowledge Online. Learn more about
the Large Synoptic Survey Telescope at LSST.org.
(This Science Fiction in
the News story used with permission from Technovelgy.com - where science meets
fiction.)
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