Sunday, 4 November 2012

Smile! The Curiosity Rover’s Ultimate Self-Portrait

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The Curiosity rover self portrait. Credit: NASA/JPL-Caltech/Malin Space Science Systems

Source: Universe Today
OK, we thought the low-resolution self-portrait from yesterday was great… but here’s the real goods: a monster, high-resolution awesome mosaic of 55 images taken by the Mars Hand Lens Imager (MAHLI), showing the rover at its spot in Gale Crater — called Rocknest — with the base of Gale Crater’s 5-kilometer- (3-mile-) high mountain, Aeolis Mons or Mount Sharp, rising in the background. The images were taken on Sol 84 (Oct. 31, 2012), and sent to Earth today. In the foreground, four scoop scars can be seen in the regolith in front of the rover. As we mentioned about the previous MAHLI mosaic, the arm was moved for each of the 55 images, so the arm and the camera doesn’t show up, just like any photographer behind the camera (or their arms) isn’t visible in a photograph.

You can get access to the full resolution version at this link. It’s amazing.
But that’s not all…

Read more:

Scientists Monitor Comet Breakup

Comet 168P-Hergenrother was imaged by the NOAO/Gemini telescope on Nov. 2, 2011 at about 6 a.m. UTC. Image credit: NASA/JPL-Caltech/NOAO/Gemini › Full view

The Hergenrother comet is currently traversing the inner-solar system. Amateur and professional astronomers alike have been following the icy-dirt ball over the past several weeks as it has been generating a series of impressive outbursts of cometary-dust material. Now comes word that the comet's nucleus has taken the next step in its relationship with Mother Nature.
"Comet Hergenrother is splitting apart," said Rachel Stevenson, a post-doctoral fellow working at NASA's Jet Propulsion Laboratory in Pasadena, Calif. "Using the National Optical Astronomy Observatory's Gemini North Telescope on top of Mauna Kea, Hawaii, we have resolved that the nucleus of the comet has separated into at least four distinct pieces resulting in a large increase in dust material in its coma."
With more material to reflect the sun's rays, the comet's coma has brightened considerably.
"The comet fragments are considerably fainter than the nucleus," said James Bauer, the deputy principal investigator for NASA's NEOWISE mission, from the California Institute of Technology. "This is suggestive of chunks of material being ejected from the surface."
The comet's fragmentation event was initially detected on Oct. 26 by a team of astronomers from the Remanzacco Observatory, using the Faulkes Telescope North in Haleakala, Hawaii. The initial fragment was also imaged by the WIYN telescope group at Kitt Peak National Observatory in Arizona.
For those interested in viewing Hergenrother, with a larger-sized telescope and a dark sky, the comet can be seen in between the constellations of Andromeda and Lacerta.
The orbit of comet 168P/Hergenrother comet is well understood. The comet, nor any of its fragments, are a threat to Earth.
 Source:  Visit NASA
DC Agle 818-393-9011
Jet Propulsion Laboratory, Pasadena, Calif.