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- Image of the Milky way Galactic Center from NASA’s Spitzer Space Telescope
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- Image of the Cat’s Eye Nebula from NASA’s Chandra X-ray Observatory and NASA’s Hubble Space Telescope
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- Image of the Milky Way Galactic Center from NASA’s Spitzer and Hubble Space Telescopes, and NASA’s Chandra X-ray Observatory
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- NASA’s Spitzer Space Telescope has captured a new, infrared view of the choppy star-making cloud called M17, also known as the Omega Nebula or the Swan Nebula. The cloud, located about 6,000 light-years away in the constellation Sagittarius, is dominated by a central group of massive stars — the most massive stars in the region. These central stars give off intense flows of expanding gas, which rush like rivers against dense piles of material, carving out the deep pocket at center of the picture. Winds from the region’s other massive stars push back against these oncoming rivers, creating bow shocks like those that pile up in front of speeding boats. Three of these bow shocks are nestled in the upper left side of the central cavity, but are difficult to spot in this view. They are composed of compressed gas in addition to dust that glows at infrared wavelengths Spitzer can see. The smiley-shaped bow shocks curve away from the stellar winds of the central massive stars. This picture was taken with Spitzer’s infrared array camera. It is a four-color composite, in which light with a wavelength of 3.6 microns is blue; 4.5-micron light is green; 5.8-micron light is orange; and 8-micron light is red. Dust is red, hot gas is green and white is where gas and dust intermingle. Foreground and background stars appear scattered through the image.
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- Image of the galaxy M101 from NASA’s Spitzer and Hubble Space Telescopes, NASA’s Chandra X-ray Observatory, and NASA’s Galaxy Evolution Explorer
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Tag: garden in Philadelphia
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The Philadelphia Zoo
The Zoo 150th Birthday The Philadelphia Zoo celebrated its 150th anniversary in 2009. So stop by and celebrate this major achievement at America´s first zoo! McNeil Avian Center On May 30, 2009 the 17.5-million McNeil Avian Center opened to the public. This new aviary incorporates lush, walk-through habitats where visitors Read more [...]
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Longwood Gardens
The Experience When you´re at Longwood Gardens, it´s easy to imagine that you´re at a giant, royal garden in Europe. Stroll along the many paths through acres of exquisitely maintained grounds featuring 11,000 different types of plants. Encounter a new vista at each turn: the Italian Water Garden, Flower Garden Read more [...]