martes, noviembre 08, 2011

Nasa images (always astonishing!)



The Giant Nebula, NGC 3603

"Thousands of sparkling young stars nestled within the giant nebula NGC 3603. This stellar "jewel box" is one of the most massive young star clusters in the Milky Way Galaxy. NGC 3603 is a prominent star-forming region in the Carina spiral arm of the Milky Way, about 20,000 light-years away. This image shows a young star cluster surrounded by a vast region of dust and gas. The image reveals stages in the life cycle of stars. The nebula was first discovered by Sir John Herschel in 1834. The image spans roughly 17 light-years.

Image Credit: NASA, ESA, and the Hubble Heritage "




The Space Station's First Crew

"Expedition 1 Commander Bill Shepherd (center) is flanked by Soyuz Commander Yuri Gidzenko (right) and Flight Engineer Sergei Krikalev (left) in this crew photograph. The three, seated in front of an artist's concept of the International Space Station, are wearing the Sokol space suits like those donned for trips in the Soyuz to the station. National flags representing all the international partners run along the bottom of the portrait. Expedition 1 was the first crew to live aboard the orbital platform and launched to the station on Oct. 31, 2000.

Image Credit: NASA"



When Galaxies Collide

"This interacting pair of galaxies is included in Arp's catalog of peculiar galaxies as number 148. Arp 148 is the staggering aftermath of an encounter between two galaxies, resulting in a ring-shaped galaxy and a long-tailed companion. The collision between the two parent galaxies produced a shockwave effect that first drew matter into the center and then caused it to propagate outwards in a ring. The elongated companion perpendicular to the ring suggests that Arp 148 is a unique snapshot of an ongoing collision. Infrared observations reveal a strong obscuration region that appears as a dark dust lane across the nucleus in optical light. Arp 148 is nicknamed Mayall's object and is located in the constellation of Ursa Major, the Great Bear, approximately 500 million light-years away. This image is part of a large collection of 59 images of merging galaxies taken by the Hubble Space Telescope and released on April 24, 2008, the observatory's 18th anniversary.

Image Credit: NASA, ESA, the Hubble Heritage (STScI/AURA)-ESA/Hubble Collaboration, and A. Evans (University of Virginia, Charlottesville/NRAO/Stony Brook University)"

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