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Space images thread

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#78


Australia Telescope National Facility
Astronomers found that the pulsar XTE J1810-197 emits radio waves at an unusually high frequency, despite its powerful magnetic field.
 
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#79
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#81
The stripped spiral galaxy NGC 4522 (located ~ 60 million ly away from us).




The galaxy is part of the Virgo galaxy cluster and its rapid motion within the cluster results in strong winds across the galaxy as the gas within is left behind. Scientists estimate that the galaxy is moving at more than 10 million km/h. Bright blue pockets of new star formation can be seen to the right and left of centre.


And here's dusty spiral galaxy NGC 4414

 

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#82
The stripped spiral galaxy NGC 4522 (located ~ 60 million ly away from us).




The galaxy is part of the Virgo galaxy cluster and its rapid motion within the cluster results in strong winds across the galaxy as the gas within is left behind. Scientists estimate that the galaxy is moving at more than 10 million km/h. Bright blue pockets of new star formation can be seen to the right and left of centre.


And here's dusty spiral galaxy NGC 4414

Technically if it's 60 million LY away from us, wouldn't what we're observing actually be what occurred 60 million years ago at that point in space? So those "new star formations" were actually occurring millions of years ago and we're just seeing them now. So they're probably well into their life if they were to be observed from a planet in the same system as one of those stars. I just like pointing this out because it's not like light crosses the cosmos instantly.
 
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#83
Technically if it's 60 million LY away from us, wouldn't what we're observing actually be what occurred 60 million years ago at that point in space? So those "new star formations" were actually occurring millions of years ago and we're just seeing them now. So they're probably well into their life if they were to be observed from a planet in the same system as one of those stars. I just like pointing this out because it's not like light crosses the cosmos instantly.
That's right. According to theory of relativity no information can travel ftl. Astronomers call them "new" because we're seeing them now (our local "now"). Technically speaking whatever you do/see/hear (even in everyday life) is in the past, we can't perceive reality in realtime because of these limitations.
 
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#84
The barred spiral galaxy NGC 1672, showing up clusters of hot young blue stars along its spiral arms, and clouds of hydrogen gas glowing in red.



NGC 986 (barred spiral galaxy) is found in the constellation of Fornax sitting around 56 million ly away. Its golden centre and barred swirling arms are clearly visible in this image. Young blue stars can be seen dotted amongst the galaxy’s arms and the core of the galaxy is also aglow with star formation.



Look at that S-like structure!
 
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#85
New image of Andromeda



MSH 11-62 (located ~ 16000 ly from us) and G327.1-1.1 (located ~ 29000 from us) - are supernova remnants.




When a massive star runs out of fuel resulting in a supernova explosion, the central regions usually collapse to form a neutron star. The energy generated by the formation of the neutron star triggers a supernova. As the outward-moving shock wave sweeps up interstellar gas, a reverse shock wave is driven inward, heating the stellar ejecta. Meanwhile, the rapid rotation and intense magnetic field of the neutron star (pulsar), combine to generate a powerful wind of high-energy particles.
 
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#86


The Egg Nebula, lies ~ 3000 ly from Earth.

Although the dying star is hidden behind the thick dust lane that streaks down the center of this image, it is revealed by the four lighthouse-like beams clearly visible through the veil of dust that lies beyond the central lane. The light beams were able to penetrate the central dust lane due to paths carved out of the thick cloud by powerful jets of material expelled from the dying star, although the cause of these jets is not yet known.
 
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#87


A small galaxy, called Sextans A, located 4.5 million ly from Earth. The environment in this galaxy is similar to that of our infant universe because it lacks elements heavier than hydrogen and helium. Heavy metals act in some ways like fertilizers for stars, helping them form and grow. Scientists study galaxies like Sextans A to learn how stars still manage to slowly bloom under these poor-growing conditions. The research provides a better understanding of how the very first stars in our universe came to be. In this image, the purple shows gas; blue shows young stars and the orange and yellow dots are newly formed stars heating up dust.



NGC 3532 is a bright open cluster located ~1300 ly away in the constellation of Carina. NGC 3532 covers an area of the sky that is almost twice the size of the full Moon. This grouping of stars is ~ 300 million years old. This makes it middle-aged by open star cluster standards. The cluster stars that started off with moderate masses are still shining brightly with blue-white colours, but the more massive ones have already exhausted their supplies of hydrogen fuel and have become red giant stars. As a result the cluster appears rich in both blue and orange stars. The most massive stars in the original cluster will have already run through their brief but brilliant lives and exploded as supernovae long ago. There are also numerous less conspicuous fainter stars of lower mass that have longer lives and shine with yellow or red hues. NGC 3532 consists of around 400 stars in total.
 
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#88


The supermassive black hole at the core of the spiral galaxy NGC 4151. NGC 4151 is located ~ 62 million ly away from us.



A slightly warped dwarf galaxy known as UGC 1281. This galaxy lies roughly 18 million ly away in the constellation of Triangulum. It has a slightly warped shape to its outer edges, and is forming stars at a particularly low rate. The bright companion to the lower left of UGC 1281 is the small galaxy PGC 6700, officially known as 2MASX J01493473+3234464.
 
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#89


These amazing images are of the planet Mars passing below Lagoon and Trifid nebulae.

Located ~ 5000 ly from Earth, the Lagoon Nebula (M8 or NGC 6523) is one of two star-forming regions visible to the unaided eye from the Northern Hemisphere. It's ~ 110 ly across and.

The Trifid Nebula (M20 or NGC 6514) is a combination of an emission nebula (the red area), a reflection nebula (the blue area) and a dark nebula. Also visible are the star-forming regions of NGC 6559, IC 1274 and IC 1275.



A false-color X-ray image of the core of the Virgo cluster of galaxies. The emission comes from very hot gas between the galaxies. This gas should cool off, but doesn't. The scale mark corresponds to a physical scale of 50 ly.
 
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#90
I did not know of this thread lol. subbed.
 
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#91



The closer galaxy is located 100 million ly away. It is spiral in shape, but from our viewpoint on Earth, we are seeing its thin edge. The bright glow of dense starfields that run along the galaxy's central plane, and in its core, are easily seen.
The farther galaxy, seen in magenta, is nearly 7 billion ly away. Two giant jets shoot away from this galaxy, one of which is seen above the plane of the closer galaxy's disk, while the other is hidden behind it. A second distant radio galaxy can be seen as a magenta dot further to the right.




This image shows a region that lies within the constellation of Scorpius, close to the central plane of the galaxy. The region hosts a dense cloud of dust and gas associated with the molecular cloud clearly visible as an orange smudge at the centre of the image.
Clouds like these are breeding grounds for new stars. In the centre of this cloud the bright object known as G345.4938+01.4677 can just be seen beyond the veil of gas and dust. This is a very young star in the process of forming as the cloud collapses under gravity. The young star is very bright and heavy (~15 times more massive than the Sun). There is a large disc of gas and dust around the forming star as well as a stream of material flowing out from it.
The bright star in the bottom left of the image is known as HD 153220.
 
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#92
Lord of the stars - Galaxy M87
M87 is a giant (120000-ly-diameter) elliptical galaxy with an estimated mass of 300 billion suns.

http://www.spacetelescope.org/images/opo9207a/

Located 52-54 million ly away at the heart of the neighboring Virgo cluster of galaxies, M87 is the nearest example of an active galactic nucleus with a bright optical jet. The jet appears as a string of knots within a widening cone extending out from the core of M87. According to one theory, the jet is most likely powered by a 2-3 billion solar mass black hole at the nucleus of M87. Magnetic fields generated within a spinning accretion disk surrounding the black hole, spiral around the edge of the jet. The fields confine the jet to a long narrow tube of hot plasma and charged particles. High speed electrons and protons which are accelerated near the black hole race along the tube at nearly the speed of light. When electrons are caught up in the magnetic field they radiate in a process called synchrotron radiation.



http://www.spacetelescope.org/images/opo0020a/



http://www.spacetelescope.org/images/heic0815j/



http://www.spacetelescope.org/images/heic0815f/

 
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#93


Irregular dwarf galaxy NGC 2366 located ~ 10 million ly away in the constellation of Camelopardalis. The most obvious feature in this starry mist is a large nebula NGC 2363 visible in the upper-right part of the image. A new generation of stellar titans has lit up this nebula.



J1649+2635 (located ~ 800 million ly from Earth) is a spiral galaxy, like our own Milky Way, but with prominent "jets" of subatomic particles propelled outward from its core at nearly the speed of light.



Little spiral galaxy NGC 4102 lies in the northern constellation of Ursa Major. Its nucleus emits particular types of radiation - specifically, emission from weakly-ionized or neutral atoms of certain elements. There's a starburst region towards its center, where stars are being created at a rate much more furious than in a normal galaxy.
 
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#95
M101 (Pinwheel Galaxy)

The Pinwheel Galaxy is in the constellation of Ursa Major . It is about 70% larger than our galaxy, with a diameter of ~ 170000 ly, and sits at a distance of 21 million ly from us.



Giant elliptical galaxy NGC 1316 with complex loops and blobs of cosmic dust.



Galaxy cluster MACS J0416.1-2403 has 160 trillion times the mass of the Sun in an area over 650000 ly across.



NGC 2207 and IC 2163 are two spiral galaxies in the process of merging. They're located ~130 million ly from us, in the constellation of Canis Major. These galaxies are sprinkled with many star systems known as X-ray binaries, which consist of a star in a tight orbit around either a neutron star or a "stellar-mass" black hole. The strong gravity of the neutron star or black hole pulls matter from the companion star. As this matter falls toward the neutron star or black hole, it is heated to millions of degrees and generates X-rays.

 
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#96
UGC 8335 (Arp 238) is a strongly interacting pair of spiral galaxies located in the constellation of Ursa Major, the Great Bear, ~ 400 million ly from Earth.



NGC 2371, is a planetary nebula, the glowing remains of a sun-like star. The remnant star visible at the center of NGC 2371 is the super-hot core of the former red giant, now stripped of its outer layers. NGC 2371 lies ~ 4300 ly away in the constellation Gemini.
A planetary nebula is an expanding cloud of gas ejected from a star that is nearing the end of its life. The nebula glows because of ultraviolet radiation from the hot remnant star at its center. In only a few thousand years the nebula will dissipate into space. The central star will then gradually cool down, eventually becoming a white dwarf, the final stage of evolution for nearly all stars.



Galaxy UGC 10214 resides ~ 420 million ly away in the constellation Draco. Its distorted shape was caused by a small interloper, a very blue, compact, galaxy visible in the upper left corner. The tiny intruder is likely a hit and run galaxy that is now leaving the scene of the accident. Strong gravitational forces from the interaction created the long tail of stars and gas stretching out more than 280 000 ly.
Numerous young blue stars and star clusters, spawned by the galaxy collision, are seen in the spiral arms, as well as in the long 'tidal' tail of stars. Each of these clusters represents the formation of up to about a million stars. Their colour is blue because they contain very massive stars, which are 10 times hotter and 1 million times brighter than our Sun. Once formed, the star clusters become redder with age as the most massive and bluest stars exhaust their fuel and burn out. These clusters will eventually become old globular clusters similar to those found in essentially all halos of galaxies, including our own Milky Way.

 
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#97


A new image of a well-known star cluster M47 in the southern sky, shows off hot blue stars sparkling amid red giants. The blue stars are younger and hotter, while the red stars are cooler. The red stars have short lives and are further along in their lifespans than the blue stars, which aren't quite as massive.

The cluster is ~ 1600 ly from us and it's 78 million years old. It only has 50 stars visible from Earth in a small region, ~ 12 ly across.

Video
 
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#99


Warm two-lobed planetary nebula called the Red Spider nebula is located 3000 ly away in the constellation of Sagittarius. It harbors one of the hottest stars known and its powerful stellar winds generate waves 100 billion km high. The waves are caused by supersonic shocks, formed when the local gas is compressed and heated in front of the rapidly expanding lobes. The atoms caught in the shock emit the spectacular radiation seen in this image.


Video about Andromeda
 
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Heart Nebula (IC 1805) lies ~ 7500 ly away in the constellation Cassiopeia.



The Horsehead nebula is only one small feature in the Orion Molecular Cloud Complex, dominated in the center of this view by the brilliant Flame nebula (NGC 2024). The smaller, glowing cavity falling between the Flame and the Horsehead is called NGC 2023. These regions are ~ 1200 ly away.

 
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