Discussion in 'Science & Technology' started by Drone, Dec 18, 2012.
...missed the football....bad receiver.....
M82, which is located ~12 million ly away in the constellation Ursa Major, is a classic example of a starburst galaxy - one that is producing new stars tens- to hundreds-of-times faster than Milky Way.
The yellow areas correspond to regions of intense star formation. The red areas trace giant outflows of ionized gas fleeing the disk of the galaxy.
Image of NGC 6872 (left) and companion galaxy IC 4970 (right) locked in a tango as the two galaxies gravitationally interact. The galaxies lie ~ 200 million ly away in the direction of the constellation Pavo.
About half of the Whirlpool Galaxy's (M51) hydrogen molecules (blue) fill the spiral in a foglike layer, not in giant, individual clouds where stars form. The pressure the molecular hydrogen fog exerts on the giant clouds plays a larger role in making new stars than previously thought. The galaxy sits ~23 million ly from Earth in the constellation Canes Venatici.
The Bird (ESO 593-IG 008 or IRAS 19115-2124) is a triple merger of galaxies (at a distance of 650 million ly), composed of one barred spiral, one more irregular and a third (the head) irregular galaxy that seems to be forming stars at a frantic rate (200 solar masses per year).
The bipolar planetary nebula Sh2-71 lies in the constellation of Aquila at a distance of 1 kpc
Tarantula Nebula (30 Doradus or NGC 2070) is located in the southern constellation Dorado 160000 ly from Earth.
New cool high resolution images:
This ethereal object, known as [SBW2007] 1, is a nebula with a giant star at its centre. The star was originally 20 times more massive than our Sun, and is now encased in a swirling ring of purple gas, the remains of the distant era when it cast off its outer layers via violent pulsations and winds.
The nearby spiral galaxy M83, also known as the Southern Pinwheel, lies 15 million ly away in the constellation Hydra.
This Hubble photograph captures thousands of star clusters, hundreds of thousands of individual stars, and "ghosts" of dead stars called supernova remnants. The galactic panorama unveils a tapestry of the drama of stellar birth and death spread across 50000 ly.
Coma Cluster is ~ 350 million ly away from us and contains over 1000 identified galaxies, the majority of which are elliptical.
The bright, saucer-shaped objects surrounded by misty halos in this image are galaxies, each of them host to many millions of stars. The background of the image is full of distant galaxies, many of them with spiral shapes, that are located much further away and do not belong to the cluster.
Formed about 100 million years ago, the Pleiades star cluster (M45 or Seven Sisters) comprises 800 stars. It is located 410 ly from Earth in the constellation Taurus.
At the left, spiral galaxy NGC 2276, in the constellation of Cepheus, shows an asymmetrical appearance. To its right, we see elliptical galaxy NGC 2300, together with NGC 2276 forming galaxy pair Arp 114.
The Lagoon Nebula is a giant cloud of interstellar gas and dust located in the constellation Sagittarius, ~ 5700 ly away.
Spiral Galaxy M65
Centaurus A is a galaxy located ~12 million ly from Earth. In this image, the lowest-energy X-rays are red, while the medium-energy X-rays are green, and the highest-energy ones are blue.
12 million light years away ... it's amusing when you think about it, that jet was generated by the giant black hole at that galaxy's center while our Earth was in Miocene, 12 million years ago, when these dudes were roaming north america:
Brand new image of M7 star cluster.
NGC 660 is a polar ring galaxy at a distance of ~ 43 million ly in the constellation of Pisces. Polar ring galaxies are named as such because a substantial proportion of the stellar population, gas and dust orbit the galaxy is placed in rings around the nucleus. These rings are thought to be created by interaction with a neighbouring galaxy.
Orange supergiant star, Xi Cygni, beams through the red haze of the North American Nebula's "west coast".
The North America Nebula is an emission nebula 100 ly in diameter located in the constellation Cygnus ~ 1800 ly away.
these are so beautiful image, i love space,
how do u calculate the distance in light year?
the speed of light = 299,792,458 m / s
1 year is 31,557,600 seconds
distance that light travels in a year is 299,792,458 * 31,557,600 meters or 9,460,730,472,580,800 meters
I'm used to the "186,000 miles per sec" myself
What you mean? How you calculated?
No, how I remembered it from class http://en.wikipedia.org/wiki/Speed_of_light
This image from the NASA/ESA Hubble Space Telescope reveals a galaxy cluster, known as MACS J0454.1-0300. Each of the bright spots seen here is a galaxy, and each is home to many millions, or even billions, of stars.
MACS J0454.1-0300 is so massive it is the equivalent of about 180 trillion suns. For comparison, the sun is about 333000 times the mass of the Earth.
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