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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: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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Re:NASA pics

Date Posted:25/11/2024 10:19 AMCopy HTML

2024 November 25
The top half glows red, while the bottom half is filled
 with dark dust. Protruding into the red is a dark dust
lane that resembles a horse's head. 
Please see the explanation for more detailed information.

The Horsehead Nebula
Image Credit & Copyright: Alex Lin (Chilescope)

Explanation: One of the most identifiable nebulas in the sky, the Horsehead Nebula in Orion, is part of a large, dark, molecular cloud. Also known as Barnard 33, the unusual shape was first discovered on a photographic plate in the late 1800s. The red glow originates from hydrogen gas predominantly behind the nebula, ionized by the nearby bright star Sigma Orionis. The darkness of the Horsehead is caused mostly by thick dust, although the lower part of the Horsehead's neck casts a shadow to the left. Streams of gas leaving the nebula are funneled by a strong magnetic field. Bright spots in the Horsehead Nebula's base are young stars just in the process of forming. Light takes about 1,500 years to reach us from the Horsehead Nebula. The featured image was taken from the Chilescope Observatory in the mountains of Chile.


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Re:NASA pics

Date Posted:24/11/2024 10:09 AMCopy HTML

2023 December 5
An illustrations depicts a high energy cosmic ray
starting an air shower in the Earth's atmosphere. Below
is an array of air shower detectors. 
Please see the explanation for more detailed information.

Energetic Particle Strikes the Earth
Illustration Credit: Osaka Metropolitan U./L-INSIGHTKyoto U./Ryuunosuke Takeshige

Explanation: It was one of the most energetic particles ever known to strike the Earth -- but where did it come from? Dubbed Amaterasu after the Shinto sun goddess, this particle, as do all cosmic rays that strike the Earth's atmosphere, caused an air shower of electrons, protons, and other elementary particles to spray down onto the Earth below. In the featured illustration, a cosmic ray air shower is pictured striking the Telescope Array in UtahUSA, which recorded the Amaterasu event in 2021 May. Cosmic ray air showers are common enough that you likely have been in a particle spray yourself, although you likely wouldn't have noticed. The origin of this energetic particle, likely the nucleus of an atom, remains a mystery in two ways. First, it is not known how any single particle or atomic nucleus can practically acquire so much energy, and second, attempts to trace the particle back to where it originated did not indicate any likely potential source.


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Re:NASA pics

Date Posted:24/11/2024 10:07 AMCopy HTML

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Re:NASA pics

Date Posted:24/11/2024 1:34 AMCopy HTML

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Re:NASA pics

Date Posted:23/11/2024 9:58 AMCopy HTML

2024 November 23
See Explanation.  Clicking on the picture will download
the highest resolution version available.

Interplanetary Earth
Image Credit: Cassini Imaging TeamSSIJPLESANASA & NASA / JHU Applied Physics Lab / Carnegie Inst. Washington

Explanation: In an interplanetary first, on July 19, 2013 Earth was photographed on the same day from two other worlds of the Solar System, innermost planet Mercury and ringed gas giant Saturn. Pictured on the left, Earth is the pale blue dot just below the rings of Saturn, as captured by the robotic Cassini spacecraft then orbiting the outermost gas giant. On that same day people across planet Earth snapped many of their own pictures of Saturn. On the right, the Earth-Moon system is seen against the dark background of space as captured by the sunward MESSENGER spacecraft, then in Mercury orbit. MESSENGER took its image as part of a search for small natural satellites of Mercury, moons that would be expected to be quite dim. In the MESSENGER image, the brighter Earth and Moon are both overexposed and shine brightly with reflected sunlight. Destined not to return to their home world, both Cassini and MESSENGER have since retired from their missions of Solar System exploration


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Re:NASA pics

Date Posted:22/11/2024 9:26 AMCopy HTML

2024 November 22
See Explanation.  Clicking on the picture will download
the highest resolution version available.

The Medusa Nebula
Image Credit & CopyrightBruno Rota Sargi

Explanation: Braided and serpentine filaments of glowing gas suggest this nebula's popular name, The Medusa Nebula. Also known as Abell 21, this Medusa is an old planetary nebula some 1,500 light-years away in the constellation Gemini. Like its mythological namesake, the nebula is associated with a dramatic transformation. The planetary nebula phase represents a final stage in the evolution of low mass stars like the sun as they transform themselves from red giants to hot white dwarf stars and in the process shrug off their outer layers. Ultraviolet radiation from the hot star powers the nebular glow. The Medusa's transforming star is the faint one near the center of the overall bright crescent shape. In this deep telescopic view, fainter filaments clearly extend below and to the left. The Medusa Nebula is estimated to be over 4 light-years across.


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Re:NASA pics

Date Posted:21/11/2024 2:56 PMCopy HTML

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Re:NASA pics

Date Posted:21/11/2024 9:32 AMCopy HTML

2024 November 21
See Explanation.  Clicking on the picture will download
the highest resolution version available.

The Elephant's Trunk in Cepheus
Image Credit: Image Credit & CopyrightGiorgio Ferrari

Explanation: Like an illustration in a galactic Just So Story, the Elephant's Trunk Nebula winds through the emission region and young star cluster complex IC 1396, in the high and far off constellation of Cepheus. Also known as vdB 142, this cosmic elephant's trunk is over 20 light-years long. The detailed telescopic view features the bright swept-back ridges and pockets of cool interstellar dust and gas that abound in the region. But the dark, tendril-shaped clouds contain the raw material for star formation and hide protostars within. Nearly 3,000 light-years distant, the relatively faint IC 1396 complex covers a large region on the sky, spanning over 5 degrees. This rendition spans a 1 degree wide field of view though, about the angular size of 2 full moons.


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Re:NASA pics

Date Posted:20/11/2024 12:39 PMCopy HTML

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

Earthset from Orion
Image Credit: NASAArtemis 1

Explanation: Eight billion people are about to disappear in this snapshot from space taken on 2022 November 21. On the sixth day of the Artemis I mission, their home world is setting behind the Moon's bright edge as viewed by an external camera on the outbound Orion spacecraft. Orion was headed for a powered flyby that took it to within 130 kilometers of the lunar surface. Velocity gained in the flyby maneuver was used to reach a distant retrograde orbit around the Moon. That orbit is considered distant because it's another 92,000 kilometers beyond the Moon, and retrograde because the spacecraft orbited in the opposite direction of the Moon's orbit around planet Earth. Orion entered its distant retrograde orbit on November 25. Swinging around the Moon, Orion reached a maximum distance (just over 400,000 kilometers) from Earth on November 28, exceeding a record set by Apollo 13 for most distant spacecraft designed for human space explorationThe Artemis II mission, carrying 4 astronauts around the moon and back again, is scheduled to launch no earlier than September 2025.


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Re:NASA pics

Date Posted:19/11/2024 9:40 AMCopy HTML

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Re:NASA pics

Date Posted:18/11/2024 8:38 AMCopy HTML

2024 November 18
A blue glowing gas background shows numerous bright stars
in the foreground. A dark red dust nebula is also visible toward
the image center. Around the edges, dark dust clouds are also
visible, sometime colored tan and other times dark brown. 
Please see the explanation for more detailed information.

Stars and Dust in the Pacman Nebula
Image Credit & Copyright: Malcolm Loro

Explanation: Stars can create huge and intricate dust sculptures from the dense and dark molecular clouds from which they are born. The tools the stars use to carve their detailed works are high energy light and fast stellar winds. The heat they generate evaporates the dark molecular dust as well as causing ambient hydrogen gas to disperse and glowPictured here, a new open cluster of stars designated IC 1590 is nearing completion around the intricate interstellar dust structures in the emission nebula NGC 281, dubbed the Pac-man Nebula because of its overall shape. The dust cloud just above center is classified as a Bok Globule as it may gravitationally collapse and form a star -- or stars. The Pacman Nebula lies about 10,000 light years away toward the constellation of Cassiopeia.


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Re:NASA pics

Date Posted:17/11/2024 2:07 PMCopy HTML

2024 November 17
A starfield is dominated by light brown dust. In the 
middle is a parabolic gas cloud opening toward the lower right.
A bright star is near the center at the apex of the parabolic
gas cloud. 
Please see the explanation for more detailed information.

LDN 1471: A Windblown Star Cavity
Image Credit: HubbleNASAESAProcessing & LicenseJudy Schmidt

Explanation: What is the cause of this unusual parabolic structure? This illuminated cavity, known as LDN 1471, was created by a newly forming star, seen as the bright source at the peak of the parabola. This protostar is experiencing a stellar outflow which is then interacting with the surrounding material in the Perseus Molecular Cloud, causing it to brighten. We see only one side of the cavity -- the other side is hidden by dark dust. The parabolic shape is caused by the widening of the stellar-wind blown cavity over time. Two additional structures can also be seen either side of the protostar; these are known as Herbig-Haro objects, again caused by the interaction of the outflow with the surrounding material. What causes the striations on the cavity walls, though, remains unknown. The featured image was taken by NASA and ESA’s Hubble Space Telescope after an original detection by the Spitzer Space Telescope.


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Re:NASA pics

Date Posted:17/11/2024 12:06 PMCopy HTML

cheers Rocky

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