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zxxlyzq
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Date Posted:09/03/2018 12:10 PMCopy HTML

See Explanation.  Clicking on the picture will download the highest resolution version available.

Horsehead: A Wider View 
Composition and Processing: Robert Gendler 
Image Data: ESOVISTAHLAHubble Heritage Team (STScI/AURA)

Explanation: Combined image data from the massive, ground-based VISTA telescope and the Hubble Space Telescope was used to create this wide perspective of the interstellar landscape surrounding the famous Horsehead Nebula. Captured at near-infrared wavelengths, the region's dusty molecular cloud sprawls across the scene that covers an angle about two-thirds the size of the Full Moon on the sky. Left to right the frame spans just over 10 light-years at the Horsehead's estimated distance of 1,600 light-years. Also known as Barnard 33, the still recognizable Horsehead Nebula stands at the upper right, the near-infrared glow of a dusty pillar topped with newborn stars. Below and left, the bright reflection nebula NGC 2023 is itself the illuminated environs of a hot young star. Obscuring clouds below the base of the Horsehead and on the outskirts of NGC 2023 show the tell-tale far red emission of energetic jets, known as Herbig-Haro objects, also associated with newborn stars.

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Re:NASA pics

Date Posted:20/12/2024 9:52 AMCopy HTML

2024 December 20
See Explanation.  Clicking on the picture will download
the highest resolution version available.

The Long Night Moon
Image Credit & Copyright: Giorgia Hofer and Dario Giannobile (Pictores caeli)

Explanation: On the night of December 15, the Full Moon was bright. Known to some as the Cold Moon or the Long Night Moon, it was the closest Full Moon to the northern winter solstice and the last Full Moon of 2024. This Full Moon was also at a major lunar standstill. A major lunar standstill is an extreme in the monthly north-south range of moonrise and moonset caused by the precession of the Moon's orbit over an 18.6 year cycle. As a result, the full lunar phase was near the Moon's northernmost moonrise (and moonset) along the horizon. December's Full Moon is rising in this stacked image, a composite of exposures recording the range of brightness visible to the eye on the northern winter night. Along with a colorful lunar corona and aircraft contrail this Long Night Moon shines in a cold sky above the rugged, snowy peaks of the Italian Dolomites.


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Re:NASA pics

Date Posted:20/12/2024 7:02 AMCopy HTML

Wow 

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Re:NASA pics

Date Posted:19/12/2024 11:06 AMCopy HTML

2024 December 19
See Explanation.  Clicking on the picture will download
the highest resolution version available.

Messier 2
Image Credit: ESA/Hubble & NASAG. Piotto et al.

Explanation: After the Crab Nebula, this giant star cluster is the second entry in 18th century astronomer Charles Messier's famous list of things that are not comets. M2 is one of the largest globular star clusters now known to roam the halo of our Milky Way galaxy. Though Messier originally described it as a nebula without stars, this stunning Hubble image resolves stars across the cluster's central 40 light-years. Its population of stars numbers close to 150,000, concentrated within a total diameter of around 175 light-years. About 55,000 light-years distant toward the constellation Aquarius, this ancient denizen of the Milky Way, also known as NGC 7089, is 13 billion years old. An extended stellar debris stream, a signature of past gravitational tidal disruption, was recently found to be associated with Messier 2.


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Re:NASA pics

Date Posted:19/12/2024 7:59 AMCopy HTML

Thanks Rocky  enjoying this thread 

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Re:NASA pics

Date Posted:18/12/2024 11:44 AMCopy HTML

2024 December 18
A dark starfield has an unusual galaxy in the center.
This galaxy has a spindle-like shape showing two dust
lanes -- one running vertically and one running diagonally
from the upper left. 
Please see the explanation for more detailed information.

NGC 660: Polar Ring Galaxy
Image Credit & Copyright: Mike Selby

Explanation: What kind of strange galaxy is this? This rare structure is known as a polar ring galaxy, and it seems to have two different rings of stars. In this galaxy, NGC 660, one ring of bright stars, gas, and dark dust appears nearly vertical, while another similar but shorter ring runs diagonally from the upper left. How polar ring galaxies obtain their striking appearance remains a topic of research, but a leading theory holds that it is usually the result of two galaxies with different central ring planes colliding. NGC 660 spans about 50,000 light years and is located about 40 million light years away toward the constellation of the Fish (Pisces). The featured image was captured recently from Observatorio El Sauce in Chile.


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Re:NASA pics

Date Posted:17/12/2024 9:26 AMCopy HTML

2024 December 17
A wide star field is shown with several nebulae as identified by
the rollover image. On the upper left is a large nebula named 
the Heart Nebula. 
Please see the explanation for more detailed information.

Near to the Heart Nebula
Image Credit & Copyright: Jeff Horne & Drew Evans

Explanation: What excites the Heart Nebula? First, the large emission nebula on the upper left, catalogued as IC 1805, looks somewhat like a human heart. The nebula glows brightly in red light emitted by its most prominent element, hydrogen, but this long-exposure image was also blended with light emitted by sulfur (yellow) and oxygen (blue). In the center of the Heart Nebula are young stars from the open star cluster Melotte 15 that are eroding away several picturesque dust pillars with their atom-exciting energetic light and winds. The Heart Nebula is located about 7,500 light years away toward the constellation of Cassiopeia. This wide field image shows much more, though, including the Fishhead Nebula just below the Heart, a supernova remnant on the lower left, and three planetary nebulas on the image right. Taken over 57 nights, this image is so deep, though, that it clearly shows fainter long and complex filaments.


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Re:NASA pics

Date Posted:17/12/2024 7:04 AMCopy HTML

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Re:NASA pics

Date Posted:16/12/2024 11:22 AMCopy HTML

2024 December 16
A black and white image shows, from the side, the wall
of a high jagged cliff. At the bottom of the cliff is 
a smooth landing dotted with rocks. 
Please see the explanation for more detailed information.

A Kilometer High Cliff on Comet Churyumov - Gerasimenko
Image Credit & Licence (CC BY-SA 3.0 IGO)ESARosetta spacecraft, NAVCAM; Additional Processing: Stuart Atkinson

Explanation: This kilometer high cliff occurs on the surface of a comet. It was discovered on the dark nucleus of Comet Churyumov - Gerasimenko (CG) by Rosetta, a robotic spacecraft launched by ESA, which orbited the comet from 2014 to 2016. The ragged cliff, as featured here, was imaged by Rosetta early in its mission. Although towering about one kilometer high, the low surface gravity of Comet CG would likely make a jump from the cliffs by a human survivable. At the foot of the cliffs is relatively smooth terrain dotted with boulders as large as 20 meters across. Data from Rosetta indicates that the ice in Comet CG has a significantly different deuterium fraction -- and hence likely a different origin -- than the water in Earth's oceans. The probe was named after the Rosetta Stone, a rock slab featuring the same text written in three different languages that helped humanity decipher ancient Egyptian writing.


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Re:NASA pics

Date Posted:15/12/2024 9:46 AMCopy HTML

2024 December 15
A snowy landscape is pictured below a starry sky. The very
bright Moon appears on the upper right. Many streaks are visile
that are meteors taken over the night. 
Please see the explanation for more detailed information.

Geminid Meteors over a Snowy Forest
Image Credit & Copyright: Jakub Kuřák

Explanation: Meteors have been flowing out from the constellation Gemini. This was expected, as mid-December is the time of the Geminid Meteor Shower. Pictured here, over two dozen meteors were caught in successively added exposures taken over several hours early Saturday morning from a snowy forest in Poland. The fleeting streaks were bright enough to be seen over the din of the nearly full Moon on the upper right. These streaks can all be traced back to a point on the sky called the radiant toward the bright stars Pollux and Castor in the image center. The Geminid meteors started as sand sized bits expelled from asteroid 3200 Phaethon during its elliptical orbit through the inner Solar System.


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Re:NASA pics

Date Posted:15/12/2024 9:33 AMCopy HTML

Thanks Rocky really interesting to know 

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Re:NASA pics

Date Posted:14/12/2024 10:38 AMCopy HTML

2024 December 14
See Explanation.  Clicking on the picture will download
the highest resolution version available.

Apollo 17's Moonship
Image Credit: Apollo 17NASA, (Image Reprocessing: Andy Saunders)

Explanation: Awkward and angular looking, Apollo 17's lunar module Challenger was designed for flight in the near vacuum of space. Digitally enhanced and reprocessed, this picture taken from Apollo 17's command module America shows Challenger's ascent stage in lunar orbit. Small reaction control thrusters are at the sides of the moonship with the bell of the ascent rocket engine underneath. The hatch allowing access to the lunar surface is seen at the front, with a round radar antenna at the top. Mission commander Gene Cernan is clearly visible through the triangular window. This spaceship performed gracefully, landing on the Moon and returning the Apollo astronauts to the orbiting command module in December of 1972. So where is Challenger now? Its descent stage remains at the Apollo 17 landing site in the Taurus-Littrow valley. The ascent stage pictured was intentionally crashed nearby after being jettisoned from the command module prior to the astronauts' return to planet Earth.


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Re:NASA pics

Date Posted:14/12/2024 8:53 AMCopy HTML

Thanks Rocky x

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Re:NASA pics

Date Posted:13/12/2024 9:36 AMCopy HTML

2024 December 13
See Explanation.  Clicking on the picture will download
the highest resolution version available.

M51: Tidal Streams and H-alpha Cliffs
Image Credit & CopyrightThe Deep Sky Collective - Tim Schaeffer,
Carl Björk, Steeve Body, Fabian Neyer, Aki Jain, Ryan Wierckx, Paul Kent, Brian Valente, Antoine & Dalia Grelin,
Nicolas Puig, Stephen Guberski, Mike Hamende, Julian Shapiro, John Dziuba, Mikhail Vasilev, Bogdan Borz, Adrien Keijzer

Explanation: An intriguing pair of interacting galaxies, M51 is the 51st entry in Charles Messier's famous catalog. Perhaps the original spiral nebula, the large galaxy with whirlpool-like spiral structure seen nearly face-on is also cataloged as NGC 5194. Its spiral arms and dust lanes sweep in front of its smaller companion galaxy, NGC 5195. Some 31 million light-years distant, within the boundaries of the well-trained constellation Canes Venatici, M51 looks faint and fuzzy to the eye in direct telescopic views. But this remarkably deep image shows off stunning details of the galaxy pair's striking colors and fainter tidal streams. The image includes extensive narrowband data to highlight a vast reddish cloud of ionized hydrogen gas recently discovered in the M51 system and known to some as the H-alpha cliffs. Foreground dust clouds in the Milky Way and distant background galaxies are captured in the wide-field view. A continuing collaboration of astro-imagers using telescopes on planet Earth assembled over 3 weeks of exposure time to create this evolving portrait of M51.


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Re:NASA pics

Date Posted:12/12/2024 7:34 AMCopy HTML

Wow amazing thanks Rocky. Looks like an open sweet wrapper 

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Re:NASA pics

Date Posted:11/12/2024 9:02 AMCopy HTML

2024 December 11
A galaxy is seen in the center of the image. Faint shells are 
seen around it. A red-colored jet is seen emanating from the galaxy 
toward the lower right. 
Please see the explanation for more detailed information.

The Shells and Jets of Galaxy Centaurus A
Image Credit: Rolf Olsen

Explanation: What's the closest active galaxy to planet Earth? That would be Centaurus A, cataloged as NGC 5128, which is only 12 million light-years distant. Forged in a collision of two otherwise normal galaxies, Centaurus A shows several distinctive features including a dark dust lane across its center, outer shells of stars and gas, and jets of particles shooting out from a supermassive black hole at its center. The featured image captures all of these in a composite series of visible light images totaling over 310 hours captured over the past 10 years with a homebuilt telescope operating in AucklandNew Zealand. The brightness of Cen A's center from low-energy radio waves to high-energy gamma rays underlies its designation as an active galaxy.


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Re:NASA pics

Date Posted:11/12/2024 7:21 AMCopy HTML

Thanks Rocky

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Re:NASA pics

Date Posted:10/12/2024 9:59 AMCopy HTML

2024 December 10
A black and white drawing shows many meteors crossing
the sky above a small town with many people outside watching.
Please see the explanation for more detailed information.

The Great Meteor Storm of 1833
Image Credit: Engraving: Adolf Vollmy; Original Art: Karl Jauslin

Explanation: It was a night of 100,000 meteors. The Great Meteor Storm of 1833 was perhaps the most impressive meteor event in recent history. Best visible over eastern North America during the pre-dawn hours of November 13, many people -- including a young Abraham Lincoln -- were woken up to see the sky erupt in streaks and flashes. Hundreds of thousands of meteors blazed across the sky, seemingly pouring out of the constellation of the Lion (Leo). The featured image is a digitization of a wood engraving which itself was based on a painting from a first-person account. We know today that the Great Meteor Storm of 1833 was caused by the Earth moving through a dense part of the dust trail expelled from Comet Tempel-Tuttle. The Earth moves through this dust stream every November during the Leonid meteor shower. Later this week you might get a slight taste of the intensity of that 1833 meteor storm by witnessing the annual Geminid meteor shower.


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Re:NASA pics

Date Posted:09/12/2024 5:45 PMCopy HTML

Amazing Rocky 

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Re:NASA pics

Date Posted:09/12/2024 10:10 AMCopy HTML

2024 December 9
A star field shows many bright blue stars as
well as bright blue reflecting gas. 
Please see the explanation for more detailed information.

Pleiades: The Seven Sisters Star Cluster
Image Credit & Copyright: Francesco Pelizzo

Explanation: Have you ever seen the Pleiades star cluster? Even if you have, you probably have never seen it as large and clear as this. Perhaps the most famous star cluster on the sky, the bright stars of the Pleiades can be seen with the unaided eye even from the depths of a light-polluted city. With a long exposure from a dark location, though, the dust cloud surrounding the Pleiades star cluster becomes very evident. The featured 23-hour exposure, taken from FagagnaItaly covers a sky area several times the size of the full moon. Also known as the Seven Sisters and M45the Pleiades lies about 400 light years away toward the constellation of the Bull (Taurus). A common legend with a modern twist is that one of the brighter stars faded since the cluster was named, leaving only six of the sister stars visible to the unaided eye. The actual number of Pleiades stars visible, however, may be more or less than seven, depending on the darkness of the surrounding sky and the clarity of the observer's eyesight


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Re:NASA pics

Date Posted:02/12/2024 9:46 AMCopy HTML

Beautiful

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Re:NASA pics

Date Posted:02/12/2024 9:36 AMCopy HTML

2024 December 2
A classic spiral galaxy is shown with blue spiral
arms. The center is yellow-red. Many star clusters are 
easily visible. 
Please see the explanation for more detailed information.

NGC 300: A Galaxy of Stars
Image Credit & Copyright: Daniel Stern

Explanation: This galaxy is unusual for how many stars it seems that you can see. Stars are so abundantly evident in this deep exposure of the spiral galaxy NGC 300 because so many of these stars are bright blue and grouped into resolvable bright star clusters. Additionally, NGC 300 is so clear because it is one of the closest spiral galaxies to Earth, as light takes only about 6 million years to get here. Of course, galaxies are composed of many more faint stars than bright, and even more of a galaxy's mass is attributed to unseen dark matterNGC 300 spans nearly the same amount of sky as the full moon and is visible with a small telescope toward the southern constellation of the Sculptor. The featured image was captured in October from Rio HurtadoChile and is a composite of over 20 hours of exposure.


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Re:NASA pics

Date Posted:30/11/2024 10:13 AMCopy HTML

Wow amazing 

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Re:NASA pics

Date Posted:30/11/2024 8:59 AMCopy HTML

2024 November 30
See Explanation.  Clicking on the picture will download
the highest resolution version available.

Winter and Summer on a Little Planet
Image Credit & CopyrightCamille Niel

Explanation: Winter and summer appear to come on a single night to this stunning little planet. It's planet Earth of course. The digitally mapped, nadir centered panorama covers 360x180 degrees and is composed of frames recorded during January and July from the Col du Galibier in the French Alps. Stars and nebulae of the northern winter (bottom) and summer Milky Way form the complete arcs traversing the rugged, curved horizon. Cars driving along on the road during a summer night illuminate the 2,642 meter high mountain pass, but snow makes access difficult during winter months except by serious ski touringCycling fans will recognize the Col du Galibier as one of the most famous climbs in planet Earth's Tour de France.


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Re:NASA pics

Date Posted:29/11/2024 8:54 AMCopy HTML

2024 November 29
See Explanation.  Clicking on the picture will download
the highest resolution version available.

Messier 4
Image Credit & CopyrightSteve Crouch

Explanation: Messier 4 can be found west of bright red-giant star Antares, alpha star of the constellation Scorpius. M4 itself is only just visible from dark sky locations, even though the globular cluster of 100,000 stars or so is a mere 5,500 light-years away. Still, its proximity to prying telescopic eyes makes it a prime target for astronomical explorations. Recent studies have included Hubble observations of M4's pulsating cepheid variable stars, cooling white dwarf stars, and ancient, pulsar orbiting exoplanet PSR B1620-26 b. This sharp image was captured with a small telescope on planet Earth. At M4's estimated distance it spans about 50 light-years across the core of the globular star cluster


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Re:NASA pics

Date Posted:29/11/2024 8:31 AMCopy HTML

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Re:NASA pics

Date Posted:28/11/2024 9:39 AMCopy HTML

2024 November 28
See Explanation.  Clicking on the picture will download
the highest resolution version available.

NGC 206 and the Star Clouds of Andromeda
Image Credit & CopyrightRoberto Marinoni

Explanation: The large stellar association cataloged as NGC 206 is nestled within the dusty arms of the neighboring Andromeda galaxy along with the galaxy's pinkish star-forming regions. Also known as M31, the spiral galaxy is a mere 2.5 million light-years away. NGC 206 is found at the center of this sharp and detailed close-up of the southwestern extent of Andromeda's disk. The bright, blue stars of NGC 206 indicate its youth. In fact, its youngest massive stars are less than 10 million years old. Much larger than the open or galactic clusters of young stars in the disk of our Milky Way galaxy, NGC 206 spans about 4,000 light-years. That's comparable in size to the giant stellar nurseries NGC 604 in nearby spiral M33 and the Tarantula Nebula in the Large Magellanic Clou


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Re:NASA pics

Date Posted:27/11/2024 9:43 AMCopy HTML

2024 November 27
A star-filled sky has two streaks in the foreground. A green
and red streak toward the lower left was created by an ablating 
meteor, while the blue and white streak on the upper right is
the coma and tail of a comet. 
Please see the explanation for more detailed information.

The Meteor and the Comet
Image Credit & Copyright: Wang Hao; Processing: Song Wentao

Explanation: How different are these two streaks? The streak on the upper right is Comet Tsuchinshan-Atlas showing an impressive dust tail. The comet is a large and dirty iceberg that entered the inner Solar System and is shedding gas and dust as it is warmed by the Sun's light. The streak on the lower left is a meteor showing an impressive evaporation trail. The meteor is a small and cold rock that entered the Earth's atmosphere and is shedding gas and dust as it is warmed by molecular collisions. The meteor was likely once part of a comet or asteroid -- perhaps later composing part of its tail. The meteor was gone in a flash and was only caught by coincidence during a series of exposures documenting the comet's long tail. The featured image was captured just over a month ago from Sichuan Province in China.


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Re:NASA pics

Date Posted:27/11/2024 7:33 AMCopy HTML

Amazing

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Re:NASA pics

Date Posted:26/11/2024 10:39 AMCopy HTML

2024 November 26
The top panel shows a flat ring with a bright center
in blue, even though it was taken in near infrared light.
The bottom panel shows the same galaxy in visible light
and shows a brighter and more expansive center against
which the flat ring appears dark. 
Please see the explanation for more detailed information.

The Sombrero Galaxy from Webb and Hubble
Image Credit: NASAESACSASTScIHubble Heritage Project (STScIAURA)

Explanation: This floating ring is the size of a galaxy. In fact, it is a galaxy -- or at least part of one: the photogenic Sombrero Galaxy is one of the largest galaxies in the nearby Virgo Cluster of Galaxies. The dark band of dust that obscures the mid-section of the Sombrero Galaxy in visible light (bottom panel) actually glows brightly in infrared light (top panel). The featured image shows the infrared glow in false blue, recorded recently by the space-based James Webb Space Telescope (JWST) and released yesterday, pictured above an archival image taken by NASA's Hubble Space Telescope in visible light. The Sombrero Galaxy, also known as M104, spans about 50,000 light years and lies 28 million light years away. M104 can be seen with a small telescope in the direction of the constellation Virgo.


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Re:NASA pics

Date Posted:26/11/2024 8:06 AMCopy HTML

Amazing Rocky thank you x

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