Visible within the center of the Crescent nebula is what’s classified as a Wolf-Rayet star. This star is a staggering 250,000 times brighter than the Sun, 15 times more massive, and 3.3 times larger. Its surface temperature is nearly 70,000° C/ 125,000° F. At just 4.7 million years old, it is already toward the end of it’s life and is shedding its outer envelope, ejecting the equivalent of the Sun’s mass every 10,000 years. Within a few hundred thousand years, it is expected to explode as a supernova. (Image Credit: Michael Miller, Jimmy Walker)
The best photographs that the Hubble space telescope has ever taken.
1. Sombrero galaxy
2. V838 Monocerotis
3. Jupiter’s great red spot
4. Carina nebula
5. Interacting galaxies
6. Pillars of creation
7. Cat’s eye nebula
8. Planetary Nebula NGC 5189
9. Abell 2744 Frontier Field
(Source)
lesbians in space
Astronomy Photo of the Day: 5/30/15 — Vividly Blue NGC 7822
This beautifully blue image comes from Manuel Fernández Suarez—an award winning astrophotographer. It provides a window into the heart of a stellar nursery, found approximately 3,000 light-years from Earth in the Cepheus constellation.
Called NGC 7822, it lurks on the outskirts of a behemoth molecular cloud (one of the largest in our galaxy), and contains numerous features, like the star cluster known as Berkeley 59, along with one of the hottest stars in our local part of the galaxy—called BD+66 1673 (there, temperatures can exceed 45,000 K).
As we noted before, “The region, formally known as NGC 7822, contains hundreds of newborn stars that are leaving their own mark on the interstellar material surrounding them, seeding it with heavy elements that will ultimately collapse to give life to a new generation of stars. These same stars are also slowly chipping away at some of the material, they in turn, give it its distinct shape and its designation as an emission nebula.”
Sources & Other Resources: http://bit.ly/1LPOf5M
Image Credit: Manuel Fernández Suarez
A stellar fingerprint - an emission-line star known as IRAS 12196-6300
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The Infrared Visible Andromeda: This remarkable synthetic color composite image was assembled from archives of visible light and infrared astronomy image data. The field of view spans the Andromeda Galaxy are also included in the frame. via NASA
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Image of Messier 81 (M81). Located about 12 million light-years away in the Ursa Major constellation, M81 is among the brightest of the galaxies visible by telescope from Earth.
Image credit:NASA/JPL-Caltech/ESA/Harvard-Smithsonian CfA