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This irregular dwarf galaxy's closes neighbor is 2.3 million light years away, so yeah, we're calling it "isolated".
The drizzle of stars scattered across this image forms a galaxy known as UGC 4879. UGC 4879 is an irregular dwarf galaxy — as the name suggests, galaxies of this type are a little smaller and messier than their cosmic cousins, lacking the majestic swirl of a spiral or the coherence of an elliptical.
This galaxy is also very isolated. There are about 2.3 million light years between UGC 4879 and its closest neighbor, Leo A, which is about the same distance as that between the Andromeda Galaxy and the Milky Way.
This galaxy’s isolation means that it has not interacted with any surrounding galaxies, making it an ideal laboratory for studying star formation uncomplicated by interactions with other galaxies. Studies of UGC 4879 have revealed a significant amount of star formation in the first 4 billion years after the Big Bang, followed by a strange 9-billion-year lull in star formation that ended 1 billion years ago by a more recent re-ignition. The reason for this behavior, however, remains mysterious, and the solitary galaxy continues to provide ample study material for astronomers looking to understand the complex mysteries of star birth throughout the universe.
Image credit: NASA/ESA
NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.
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Spiral galaxy UGC 11537 lies so close to the plane of the Milky Way that stars from our own galaxy have crept into the image – the two prominent stars in front of UGC 11537 are interlopers from within the Milky Way.
The spikes surrounding these stars, called diffraction spikes, are the result of starlight interacting with the structure that supports Hubble’s secondary mirror.
The bright bands of stars and dark clouds of dust threading throughout the galaxy are captured here in infrared and visible light.
Image credit: ESA/Hubble & NASA, A. Seth
Read more: go.nasa.gov/31G62zU
NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.
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This image, captured by the NASA/ESA Hubble Space Telescope’s Wide Field Camera 3 (WFC3), shows a galaxy named UGC 6093. As can be easily seen, UGC 6093 is something known as a barred spiral galaxy — it has beautiful arms that swirl outwards from a bar slicing through the galaxy’s center. It is classified as an active galaxy, which means that it hosts an active galactic nucleus, or AGN: a compact region at a galaxy’s center within which material is dragged towards a supermassive black hole. As this black hole devours the surrounding matter it emits intense radiation, causing it to shine brightly.
But UGC 6093 is more exotic still. The galaxy essentially acts as a giant astronomical laser that also spews out light at microwave, not visible, wavelengths — this type of object is dubbed a megamaser (maser being the term for a microwave laser). Megamasers such as UGC 6093 can be some 100 million times brighter than masers found in galaxies like the Milky Way.
Credit: ESA/Hubble & NASA
NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.
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Hubble caught two galaxies at play!
The pair of strange, luminescent creatures at play in this image are actually galaxies — realms of millions upon millions of stars.
This galactic duo is known as UGC 2369. The galaxies are interacting, meaning that their mutual gravitational attraction is pulling them closer and closer together and distorting their shapes in the process. A tenuous bridge of gas, dust and stars can be seen connecting the two galaxies, created when they pulled material out into space across the diminishing divide between them.
Interaction with others is a common event in the history of most galaxies. For larger galaxies like the Milky Way, the majority of these interactions involve significantly smaller so-called dwarf galaxies. But every few billion years, a more momentous event can occur. For our home galaxy, the next big event will take place in about four billion years, when it will collide with its bigger neighbor, the Andromeda galaxy. Over time, the two galaxies will likely merge into one — already nicknamed Milkomeda.
Image credit: ESA/Hubble & NASA, A. Evans
NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.
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The tranquil spiral galaxy UGC 12295 basks leisurely in this image from the NASA/ESA Hubble Space Telescope. This galaxy lies around 192 million light-years away in the constellation Pisces and is almost face-on when viewed from Earth, displaying a bright central bar and tightly wound spiral arms.
Despite its tranquil appearance, UGC 12295 played host to a catastrophically violent explosion – a supernova – detected in 2015. Supernovae are the explosive deaths of massive stars and are responsible for forging many of the elements found here on Earth.
Two different teams of astronomers used Hubble’s Wide Field Camera 3 to observe UGC 12295 and sift through the wreckage of this vast stellar explosion. The first team examined the supernova’s detritus to better understand the evolution of matter in our universe.
The second team of astronomers also explored the aftermath of UGC 12295’s supernova, but their investigation focused on returning to the sites of some of the best-studied nearby earlier supernovae. Hubble’s keen vision can reveal lingering traces of these energetic events, shedding light on the nature of the systems that host them.
Text credit: European Space Agency (ESA)
Image credit: ESA/Hubble & NASA, A. Filippenko, J. Lyman
For more information: www.nasa.gov/image-feature/goddard/2023/hubble-peers-at-a...
Ex Arriva London DLA271. DAF DB250/ALX400. Now in use as a library at Widden School,Gloucester. Taken 26.2.16.
ARRIVA Kent Thameside 6233 Y466 UGC is seen is seen passing Olivers Mill on Ash Road, New Ash Green whilst working the schooldays only variant of route 423 to Wilmington Schools. Tuesday 3rd May 2016.
DAF DB250 - Alexander ALX400 (Ex-ARRIVA London South DLA 266)
IMG_33530
This image from the NASA/ESA Hubble Space Telescope shows a dwarf galaxy named UGC 685. Such galaxies are small and contain just a tiny fraction of the number of stars in a galaxy like the Milky Way. Dwarf galaxies often show a hazy structure, an ill-defined shape, and an appearance somewhat akin to a swarm or cloud of stars — and UGC 685 is no exception to this. Classified as an SAm galaxy — a type of unbarred spiral galaxy — it is located about 15 million light-years from Earth.
These data were gathered under Hubble’s LEGUS (Legacy ExtraGalactic UV Survey) program, the sharpest and most comprehensive ultraviolet survey of star-forming galaxies in the nearby universe.
LEGUS is imaging 50 spiral and dwarf galaxies in our cosmic neighborhood in multiple colors using Hubble’s Wide Field Camera 3. The survey is picking apart the structures of these galaxies and resolving their constituent stars, clusters, groups and other stellar associations. Star formation plays a huge role in shaping its host galaxy. By exploring these targets in detail via both new observations and archival Hubble data, LEGUS will shed light on how stars form and cluster together, how these clusters evolve, how a star’s formation affects its surroundings, and how stars explode at the end of their lives.
Image credit: ESA/Hubble & NASA; the LEGUS team, B. Tully, D. Calzetti; Acknowledgment: Judy Schmidt (Geckzilla)
NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.
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ARRIVA Kent Thameside 6234 Y467 UGC is seen turning out of St Johns Lane and into Church Road, Hartley while working SDO route 489. Monday 4th July 2016.
DAF DB250 10.2m - Alexander ALX400 (Ex-ARRIVA London South DLA 267)
Despite the number of ex-London DLAs being decimated following the introduction of the DDA for double deck vehicles from 1st January 2017 a small number which were actually made complaint when refurbished do remain in traffic. ARRIVA Kent & Surrey 6248 Y494 UGC is seen on Christmas Lane, High Halstow whilst working route 191. Wednesday 18th January 2017.
DAF DB250 - Alexander ALX400 (Ex-ARRIVA London North DLA 294)
Due to a vehicle shortage at Northfleet, an ex-London DLA was send out on route 423 this evening vice a MPD. ARRIVA Kent Thameside 6233 Y466 UGC is seen here having just arrived at Longfield Station with the 22:50 from Dartford. Friday 28th November 2015.
DAF DB250 - Alexander ALX400 (Ex-ARRIVA London South DLA 266)
IMG_30054
ARRIVA Kent Thameside 6234 Y467 UGC is seen on Green Street Green Road, Darenth whilst working route 423. Friday 15th January 2016
DAF DB250 - Alexander ALX400 (Ex-ARRIVA London South DLA 267)
IMG_30360
Arriva Kent Thameside 6236 Y469 UGC on the 160 in Chislehurst Road, Sidcup. Sunday 22nd March 2009. DSCN6945.
DAF DB250LF-Alexander ALX400 10.2m. Ex-Arriva London DLA 269.
Photo (c) GJW 2009.
The smudge of stars at the center of this NASA/ESA Hubble Space Telescope image is a galaxy known as UGC 5797. UGC 5797 is an emission line galaxy, meaning that it is currently undergoing active star formation. The result is a stellar population that is constantly being refurbished as massive bright blue stars form. Galaxies with prolific star formation are not only veiled in a blue tint, but are key to the continuation of a stellar cycle.
In this image UGC 5797 appears in front of a background of spiral galaxies. Spiral galaxies have copious amounts of dust and gas — the main ingredient for stars — and therefore often also belong to the class of emission line galaxies.
Spiral galaxies have disk-like shapes that drastically vary in appearance depending on the angle at which they are observed. The collection of spiral galaxies in this frame exhibits this attribute acutely: Some are viewed face-on, revealing the structure of the spiral arms, while the two in the bottom left are seen edge-on, appearing as plain streaks in the sky. There are many spiral galaxies, with varying colors and at different angles, sprinkled across this image — just take a look.
Credit: ESA/Hubble & NASA, Acknowledgement: Luca Limatola
NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.
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Arriva Kent & Surrey (GL)
Y494 UGC (6248)
DAF DB250 Alexander ALX400
New to Arriva London North as DLA294
ARRIVA Kent & Surrey 6229 Y462 UGC is seen on Higham Lane, Higham Wood whilst working an extended anti-clockwise North Tonbridge circular route 218 to Tunbridge Wells. Monday 15th August 2016
DAF DB250 - Alexander ALX400 (Ex-ARRIVA London South DLA 262)
DAF DB250LF, Plaxton President (PO47/23F)
RATP Tootbus, Wandsworth
Grosvenor Gardens, London
04 December 2021
Despite the number of ex-London DLAs being decimated following the introduction of the DDA for double deck vehicles from 1st January 2017 a small number which were actually made complaint when refurbished do remain in traffic. ARRIVA Kent & Surrey 6248 Y494 UGC is seen on Hoo Road, Wainscott whilst working route 191. Wednesday 18th January 2017.
DAF DB250 - Alexander ALX400 (Ex-ARRIVA London North DLA 294)
Even more from Baylands park in Sunnyvale. It's so close to work, I may be taking many more photos here during my lunch...
ARRIVA Kent Thameside 6234 Y467 UGC is seen on Woodlands Avenue, Hartley whilst working route 423. Wednesday 5th June 2013.
DAF DB250 - Alexander ALX400 (Ex-ARRIVA London DLA 267)
IMG_7950
The Original Tour bus DLP242 Reg Y542 UGC now in its new livery receiving finishing touches, waits in Mardens yard for its driver
15 June 2017
Former Arriva London DLP45 Reg Y533 UGC having recently been converted and painted stands in the road outside Mardens prior to having its ne decals fitted
25 September 2014
Nottingham City Transport 411 (YP17 UGC) stands on Goose Gate, Nottingham 17th February 2018. YP17 UGC is a Scania N280UD chassis fitted with a ADL Enviro 400 H42/30F body which entered service in 2017 and is one of a batch of thirty ADL 400 Enviro CNG’s powered by biogas.
ARRIVA The Shires although now officially part of ARRIVA Southern Counties 6274 Y474 UGC is seen departing from Riverside Bus Station in Hemel Hempstead whilst working route 500. Friday 11th March 2016.
DAF DB250 - Alexander ALX400 (Ex-ARRIVA London DLA274)
IMG_31618
Another arrival at Maidstone in late 2016 was this ex-London DLA from Hemel Hempstead brought in to allow non-DDA complaint vehicles to be withdrawn by deadline day. ARRIVA Kent & Surrey 6290 Y523 UGC is seen on Beacon Avenue, Kings Hill whilst working route 72. Tuesday 28th March 2017.
DAF DB250 - Alexander ALX400 (Ex-ARRIVA London DLA 290 & ARRIVA The Shires)
Edited Hubble Space Telescope imager of the galaxy UGC 11537.
Original caption: This astronomical portrait from the NASA/ESA Hubble Space Telescope showcases an edge-on view of the majestic spiral galaxy UGC 11537. Hubble’s Wide Field Camera 3 has captured the tightly wound spiral arms swirling around the heart of UGC 11537 at infrared and visible wavelengths, showing both the bright bands of stars and the dark clouds of dust threading throughout the galaxy. UGC 11537 is 230 million light-years away in the constellation Aquila, and lies close to the plane of the Milky Way. Being so close to the starry band of the Milky Way means that foreground stars from our own galaxy have crept into the image — the two prominent stars in front of UGC 11537 are interlopers from within the Milky Way. These bright foreground stars are surrounded by diffraction spikes — imaging artifacts caused by starlight interacting with Hubble’s inner structure. This image came from a set of observations designed to help astronomers weigh supermassive black holes in distant galaxies. The combination of Hubble’s sharp-eyed observations and data from ground-based telescopes allowed astronomers to make detailed models of the mass of stars in these galaxies, which in turn helps constrain the mass of supermassive black holes.
Red line 44s pass on Lower Parliament Street, with 411 on its way out of the city and Greta the 412 on its way in, on 21.3.22
I get the eyelashes if it's meant to be Greta the Gas Bus, although I really don't get why somebody thought green was a good colour to pick. Photoshop job one day maybe? "Greta the Gas Bus but it doesn't look awful?!"
ARRIVA Kent Thameside 6234 Y467 UGC is seen on Valley Drive, Singlewell whilst working route 490. Saturday 7th June 2014.
Throughout the day on a Sunday and evening journeys on Monday to Saturday route 490 is extended from Bluewater to Dartford normally the preserve of route 480 which does not serve the shopping complex.
DAF DB250 - Alexander ALX400 (Ex-ARRIVA London South DLA 267)
IMG_15049
This striking NASA/ESA Hubble Space Telescope image captures the galaxy UGC 477, located just over 110 million light-years away in the constellation of Pisces (The Fish).
UGC 477 is a low surface brightness (LSB) galaxy. First proposed in 1976 by Mike Disney, the existence of LSB galaxies was confirmed only in 1986 with the discovery of Malin 1. LSB galaxies like UGC 477 are more diffusely distributed than galaxies such as Andromeda and the Milky Way. With surface brightnesses up to 250 times fainter than the night sky, these galaxies can be incredibly difficult to detect.
Most of the matter present in LSB galaxies is in the form of hydrogen gas, rather than stars. Unlike the bulges of normal spiral galaxies, the centres of LSB galaxies do not contain large numbers of stars. Astronomers suspect that this is because LSB galaxies are mainly found in regions devoid of other galaxies, and have therefore experienced fewer galactic interactions and mergers capable of triggering high rates of star formation.
LSB galaxies such as UGC 477 instead appear to be dominated by dark matter, making them excellent objects to study to further our understanding of this elusive substance. However, due to an underrepresentation in galactic surveys — caused by their characteristic low brightness — their importance has only been realised relatively recently.
More information: www.spacetelescope.org/images/potw1614a/
Credit:
ESA/Hubble & NASA
Acknowledgement: Judy Schmidt (Geckzilla)
Galaxy UGC 2885 may be the largest one in the local universe. It is 2.5 times wider than our Milky Way and contains 10 times as many stars. This galaxy is 232 million light-years away, located in the northern constellation of Perseus.
More information: www.spacetelescope.org/images/heic2002a/
Credit:
NASA, ESA, and B. Holwerda (University of Louisville).
The Original Tour Bus DLP242 Reg Y542 UGC standing in Mardens yard shortly after arrival.
7 October 2015
This NASA/ESA Hubble Space Telescope image showcases the remarkable galaxy UGC 12591. Classified as an S0/Sa galaxy, UGC 12591 sits somewhere between a lenticular and a spiral. It lies just under 400 million light-years away from us in the westernmost region of the Pisces–Perseus Supercluster, a long chain of galaxy clusters that stretches out for hundreds of light-years — one of the largest known structures in the cosmos.
More information: www.spacetelescope.org/images/potw1709a/
Credit:
ESA/Hubble & NASA
The pair of strange, luminescent creatures at play in this image are actually galaxies — realms of millions upon millions of stars.
More information: www.spacetelescope.org/images/potw1931a/
Credit:
ESA/Hubble & NASA, A. Evans