NASA Launches WISE in Space
NASA launched a new
infrared space telescope—WISE (Wide-Field Infrared Survey Explorer) from the
Vandenberg Air Force Base in California.
A Delta II rocket carried
WISE into the polar orbit that is 326 miles above Earth at 6:09 a.m. PST.
Through WISE, NASA is
hoping to get detailed information regarding hundreds of millions of unseen and
far away objects in space besides comets and asteroids.
According to the
mission’s project manager at NASA’s Jet Propulsion Laboratory in Pasadena,
William Irace, ""WISE thundered overhead, lighting up the pre-dawn
skies. All systems are looking good, and we are on our way to seeing the entire
sky better than ever before."
WISE’s purpose in space
NASA’s has spent $320
million in building WISE which has been specifically designed to detect the
infrared glow coming out of comets and asteroids in the galaxy.
According to NASA, the
spacecraft WISE is expected to scan the whole sky one and the half times during
its 10-month mission in the space, looking to uncover hidden objects like dark
asteroids, stars and luminous galaxies.
The mission’s principal
investigator, Ned Wright said in a statement, "Now we're ready to see the
infrared glow from hundreds of thousands of asteroids, and hundreds of millions
of stars and galaxies."
According to the NASA,
almost every object in the universe glows in infrared that will make WISE’s
work of cataloging objects easy.
The WISE is expected to
reach farthest in the universe, to find the most distant and obscure star
clusters’. These far away galaxies are located 10 billion light years away from
Earth, oozing trillion times more light than sun.
Instruments onboard WISE
The most important
instrument onboard WISE is a telescope measuring 40cm (16-inch), which is
connected to four separate infrared detectors.
Each detector connected
to the telescope, has 1,032,256 pixels of resolution, more than the Infrared
Astronomical Satellite’s 62 pixels total resolution.
According to the
scientists these detectors are 500 times more sensitive as compared to the ones
in 1983. They are also capable of producing photograph-quality images of the
object they will shoot.
All these important instruments
are kept safe in a cool place within a tank that is filled with frozen
hydrogen. This is done to prevent them from heat contamination during
observations.
All the images snapped by
the spacecraft will be transferred back to Earth via Ku-band frequencies
travelling at the rate of 100 Mb/s.
The complete catalog
version of the data collected by the WISE will be released in 2012.
Source: themoneytimes.com