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I'm always enraptured by a beautiful spiral galaxy, and NGC 6814 is a grand design spiral galaxy, one of the prettiest.

It has a very bright nucleus because it's a Seyfert galaxy, a type of galaxy that hosts an active supermassive black hole. The blue stars scattered around the galaxy are hot young stars, and show that there's been recent star formation. The dark dust lanes help to give the galaxy some extra definition.

It's a beauty.

Credit: ESA/Hubble & NASA


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An acrylic painting on canvas of the Flame Nebula by Julie Glossenger. The Flame Nebula is NGC 2024 in the constellation Orion.


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The star-forming region NGC 3603 contains one of the most impressive massive young star clusters in the Milky Way. Bathed in gas and dust the cluster formed in a huge rush of star formation thought to have occurred around a million years ago. The hot blue stars at the core are responsible for carving out a huge cavity in the gas seen to the right of the star cluster in NGC 3603's centre.

Credit: NASA, ESA and the Hubble Heritage (STScI/AURA)-ESA/Hubble Collaboration


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Merope is one of the brightest stars of the Pleiades star cluster. It's passing through a dark cloud and Merope's light is reflecting off the gas and dust. The nebula which has formed is known as a reflection nebula.

Credit: NASA/ESA and The Hubble Heritage Team STScI/AURA), George Herbig and Theodore Simon (University of Hawaii).


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It's the Ring Nebula as painted by Julie Glossenger. She's created it in acrylic on canvas.


Last edited by Mona - Astronomy; 06/03/16 01:21 PM.

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Hubble shows off a strange little galaxy. It's four and a half million light years away in Ursa Major, way out at the edge of our Local Group of galaxies: UGC 4879, an irregular dwarf galaxy. It's small and rather shapeless as well as being pretty much on its own. But since it doesn't have any neighbors with which to interact, astronomers are intrigued by its history of starbirth. It's a very old galaxy and a billion years ago star formation started up again – after a 9-billion year lull following its first active four billion years.
(Credit: NASA & ESA)


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Wow! So many stars. This is the globular cluster (NGC 1854). It's about 135,000 light years away in a satellite galaxy of the Milky Way - the Large Magellanic Cloud. We see it in the southern constellation Dorado (Mahi mahi).

Photo: NASA/ESA Hubble


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Inspired by Hubble, Damir Katic presents an artistic view of the intertwining of space and time.


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One of the best-known Hubble Space Telescope images is of the Crab Nebula (M1) The image highlights the filaments of the expanding nebula which is a supernova remnant. The supernova explosion was recorded by Chinese astronomers (and others) nearly a thousand years ago.

Yesterday they released a new image and it features the neutron star at the heart of the nebula, the remains of the massive star after the explosion. (If you're interesting in finding out more, Death of a Massive Star tells the story.)

The new Hubble image of the Crab Nebula was made by combining three high-resolution images. To find the neutron star, look for pair of bright stars just to the right of center. It's the right-hand one of the pair.

This amazing object has a mass about that of the Sun, but is a sphere about 32 km (20 mi) across. It's also spinning about 30 times a second (wow!). A Hubble press release says,
Quote:
The rapid motion of the material nearest to the star is revealed by the subtle rainbow of colors in this time-lapse image, the rainbow effect being due to the movement of material over the time between one image and another.

As it spins it gives out bursts of radio waves - they come in pulses like the light from a lighthouse. This type of neutron star is called a pulsar.


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Just released today is this "lonely" starburst galaxy MCG+07-33-027 around 300 million light years away.

Normally, a galaxy doesn't produce more than a few new stars a year. If there are lots more than that, it's called a starburst. Since this is a face-on spiral galaxy, the spiral arms show up well, as does the starburst activity in them. Lots of hot young blue stars indicates considerable starbirth activity.

There needs to be lots of gas available in a galaxy if it's to be making new stars. Then a starburst would need to be triggered in some way. Often an interaction with another galaxy is the trigger, but MCG+07-33-027 is fairly isolated, so it's not clear what set off this starburst.

(Credit: ESA/Hubble & NASA and N. Grogin (STScI))


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