23 Sep '11, 10pm

Remembering UARS: Twenty years ago this month, astronauts on the space shuttle Discovery used the spacecraft'...

Twenty years ago this month, astronauts on the space shuttle Discovery used the spacecraft's robotic arm to launch the Upper Atmosphere Research Satellite (UARS) into orbit around the Earth. Armed with ten instruments, UARS was designed to observe key chemical constituents of the stratosphere and upper atmosphere, and to decipher how sunlight warms the air and provokes changes in that chemistry. UARS is perhaps best remembered for studies of the ozone layer and Antarctic ozone hole, particularly the role of chlorine, halocarbons, and nitrous oxides in ozone depletion. The satellite also was perfectly positioned to observe the transport of volcanic aerosols and the cooling of the atmosphere in the wake of the eruption of Mount Pinatubo. Many long-term climate records—such as measurements of solar radiation and greenhouse gases—were started or continued by the UARS mission. ...

Full article: http://earthobservatory.nasa.gov/IOTD/view.php?id=52262&s...

Tweets

Remembering UARS [image] #NASA

earthobservatory.nasa.gov 23 Sep '11, 10pm

Twenty years ago this month, astronauts on the space shuttle Discovery used the spacecraft's robotic arm to launch the Upp...

If that satellite falls in your yard overnight, NASA has a warning for you -- no selling on eBay

If that satellite falls in your yard overnight,...

mnn.com 23 Sep '11, 9pm

Should the satellite drop debris over the United States, which as of Friday NASA could not entirely discount given UARS's ...

Remembering Project Gutenberg's Michael Hart (1...

Hart was best known for his 1971 invention of electronic books, or eBooks. He founded Project Gutenberg, which is recogniz...

Finally! We know where the NASA satellite landed

Finally! We know where the NASA satellite landed

mnn.com 27 Sep '11, 7pm

Even after the satellite came down, NASA could merely confirm that it had re-entered , most likely within 20 minutes of 12...

Seeing Equinoxes and Solstices from Space : Ima...

earthobservatory.nasa.gov 22 Sep '11, 10pm

One of the most frequently misunderstood concepts in science is the reason for Earth’s seasons. As we experience the Septe...

Four Corners, Southwestern U.S.: Acquired June ...

earthobservatory.nasa.gov 24 Sep '11, 10pm

acquired June 11, 2001 download large image (3 MB, JPEG) acquired June 11, 2001 download GeoTIFF file (11 MB, TIFF) In jus...

Space junk \\"off California\\"

Space junk \\"off California\\"

channelnewsasia.com 24 Sep '11, 11pm

WASHINGTON: A bus-sized US satellite that hurtled unpredictably toward Earth crossed over Africa and the northern Atlantic...

Space junk landed.

Space junk landed.

channelnewsasia.com 24 Sep '11, 7am

WASHINGTON: A decommissioned NASA satellite, the biggest piece of US space junk to fall in 30 years, has crash-landed but ...

Seeing Equinoxes and Solstices from Space [imag...

earthobservatory.nasa.gov 22 Sep '11, 10pm

One of the most frequently misunderstood concepts in science is the reason for Earth’s seasons. As we experience the Septe...