Saya pernah baca yang NASA "main-main" alias mempermainkan bin merubah-ubah warna permukaan Mars. Dulunya hijah menjadi cokelat menakutkan sehingga bisa menimbulkan tafsiran menyesatkan.
Salam, nDeboost. --- In [email protected], "sunny" <am...@...> wrote: > > http://arabnews.com/lifestyle/science_technology/article85297.ece > > 25,000 new asteroids found by NASA's sky mapping > > This image provided by the NASA/JPL-Caltech/WISE Team shows the Wide-field > Infrared Survey Explorer (WISE) view of the nearby galaxy Messier 83. It is > sometimes referred to as the southern Pinwheel galaxy. What's special about > WISE is its ability to see through impenetrable veils of dust, picking up the > heat glow of objects that are invisible to regular telescopes. So far, WISE > has discovered 25,000 never-before-seen asteroids. Of those, 95 are > considered "near-Earth" asteroids. (AP) > > By ALICIA CHANG | AP > > Published: Jul 16, 2010 15:02 Updated: Jul 16, 2010 23:43 > > LOS ANGELES: Worried about Earth-threatening asteroids? One of NASA's newest > space telescopes has spotted 25,000 never-before-seen asteroids in just six > months. > > Ninety-five of those are considered "near Earth," but in the language of > astronomy that means within 30 million miles (48 million kilometers). Luckily > for us, none poses any threat to Earth anytime soon. > > Called WISE for Wide-field Infrared Survey Explorer, the telescope completes > its first full scan of the sky on Saturday and then begins another round of > imaging. > > What's special about WISE is its ability to see through impenetrable veils of > dust, picking up the heat glow of objects that are invisible to regular > telescopes. > > "Most telescopes focus on the hottest and brightest objects in the universe," > said Richard Binzel of the Massachusetts Institute of Technology. "WISE is > especially sensitive to seeing what's cool and dark, what you could call the > stealth objects of the universe." Mission team members are elated with the > discoveries of the $320 million (ยค250 million) project, which launched in > December. By the end of the year, researchers expect to have a cosmic census > of millions of newfound objects that should help answer questions about how > planets, stars and galaxies form. > > Besides all those asteroids, WISE has also sighted 15 new comets. It has > spied hundreds of potential brown dwarfs - stellar objects that are bigger > than a planet but much smaller than a star - and confirmed the existence of > 20 of them, including some of the coldest ever known. > > The telescope also detected what's thought to be an ultraluminous galaxy, > more than 10 billion light years away and formed from other colliding > galaxies. > > "We're filling in the blanks on everything in the universe from near-Earth > objects to forming galaxies," said project scientist Peter Eisenhardt of the > NASA Jet Propulsion Laboratory, which is managing the mission. > > "There's quite a zoo." WISE's 16-inch telescope was built by Utah State > University's Space Dynamics Laboratory. It circles the Earth 300 miles high > and takes snapshots every 11 seconds over the whole sky. > > Since the sky survey began, the JPL team has reported the new near-Earth > objects to the International Astronomical Union's Minor Planet Center, which > keeps track of all small solar system objects. > > WISE is discovering near-Earth asteroids that are on average larger than > what's found by existing telescopes, which should help scientists better > calculate their potential threat, said Harvard astronomer Timothy Spahr, who > directs the Minor Planet Center. > > The WISE mission comes a quarter century after the Infrared Astronomy > Satellite made the first all-sky map in infrared wavelength in 1983. Unlike > its predecessor, WISE is far more powerful. It's expected to keep taking > images covering half of the sky until October when it will begin to run out > of coolant. > > NASA has released a picture a week of WISE's myriad finds. > > But the full celestial catalog of what's out there will not be released to > the public until next year after the team has had time to process the images > and flag false alarms. > > "The real discoveries will come when we let the whole world in on the data," > Eisenhardt said. > > > [Non-text portions of this message have been removed] > ------------------------------------ Post message: [email protected] Subscribe : [email protected] Unsubscribe : [email protected] List owner : [email protected] Homepage : http://proletar.8m.com/Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/proletar/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/proletar/join (Yahoo! ID required) <*> To change settings via email: [email protected] [email protected] <*> To unsubscribe from this group, send an email to: [email protected] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
