#reflectionnebula

[kaitropoli]

NGC 1999

ESA/Hubble & NASA, ESO, K. Noll

THE Cosmic Keyhole, or by the government name of NGC 1999, is a reflection nebula in the Orion constellation. Located near the Orion Nebula, in a region of the Milky Way where stars are actively being formed, NGC 1999 is ~1350ly from Earth and is the composition of young star’s (V380 Orionis) formation discards.

UNLIKE emission nebulae, which alone emit light due to radiation ionization involving stars’ ultraviolet rays and nebula’s hydrogen atoms, NGC 1999 can’t shine unless a fixed light source illuminates the nebula due to its reflective type. The Cosmic Keyhole, however, is brightened by V380 Orionis (the light diffracting in the image above), a T Tauri star that sits covered by the smog of its birth.

REGARDING the “keyhole,” astronomers initially thought the hole was a Bok globule, a dense molecular cloud of gas and cosmic dust that absorbs light. In 2009, further observations were conducted using the Herschel Space Observatory (an infrared telescope that can penetrate dense material such as in this case), with supporting analyses from the Atacama Pathfinder Experiment, Nicholas U. Mayall Telescope, and the Magellan telescopes, debunking the Bok globule belief—instead concluding that NGC 1999’s mark isn’t anything but empty space. To this day, it’s still unknown why NGC 1999 has its iconic hole, but experts speculate that its creation is from local, new stars’ jets of gas puncturing the nebula’s foggy wall.

THE nebula was first discovered in the late 18th century by astronomer siblings Sir William and Caroline Herschel. It was later listed as object 1999 in the New General Catalogue—hence its formal name. In 1999, shortly after Servicing Mission 3A, the WFPC2 observations captured the image above.

CAPTION SOURCES

Main article w/ picture: "Hubble Peers at Mysterious Cosmic ‘Keyhole’" (NASA).

ADS

| "Hier ist wahrhaftig ein Loch im Himmel. The NGC 1999 dark globule is not a globule"

A&A

| "Herschel: the first science highlights"

CfA

| "Bok Globules"

ESA/Hubble

| "Cosmic Keyhole"

NASA

| "The Reflection Nebula in Orion"

| "NGC 1999"

| "Hubble's Nebulae"

| "Hubble Images Bok Globules"

(Caption written by @kaitropoli (me) using information from the sources above. Astronomy--knowledge of the universe, its population, fundamentals, and how everything is *known* to operate--is expanding every day with new things being discovered; the information listed could expire, so note that what I've gathered spans from 1990-2010 (with particular articles from the 2020s affirming up-to-date information with unchanged data).)

[alexanderrogge]

APOD - Reflections of the Ghost Nebula:

[d-e-r-n-e-b-e-l]

🔥🔥🔥🔥🔥

FOLLOW ⬇️

@rye_onemanband 🔥

@reflectionnebula.official 🔥

AND YOUR SERVANTS ⬇️

@domino_black_metal_cat 🖤 🐱

@_nicolas_mella_ 🤘 💿

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#Рожь #В​е​ч​н​о​е #rye #reflectionnebula #atmosphericblackmetal #blackmetal #blackgaze #cascadianblackmetal #metal #ambient #deathdoom #doom #folk #funeraldoom #postmetal #postblackmetal #funeraldoommetal #doommetal #existentialism #spiritualism #metalheadsofinstagram #cdcollector #cdcollection #metalcollector #metalcollection #musiccollection #musiccollector #recordcollector #recordcollection #cdjunkie

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[wonders-of-the-cosmos]

NGC 1999: Reflection Nebula in Orion

Credit: NASA/Hubble and Judy Schmidt

[fashioncrashjewelry]

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[astrogirlau]

The Sculptor Galaxy (also known as the Silver Coin, Silver Dollar Galaxy, NGC 253, or Caldwell 65) is an intermediate spiral galaxy in the constellation Sculptor. The Sculptor Galaxy is a starburst galaxy, which means that it is currently undergoing a period of intense star formation (Wikipedia). It is 11.5 million light-years from Earth and spans 45000 light-years across the cosmos. This Galaxy is special to me, It was the first I saw and imaged with my telescope just under a year ago, though it feels like only yesterday. I still get super excited when that first sub exposure appears on screen!! And with this Galaxy being about a mag8 even a 90sec exposure does not disappoint. I only got an hours worth of exposure as it is just rising now after midnight, I decided to stop on by after my first image plan finished in the wee hours of this morning. 1hour and some change x 90sec subs , 100 gain Dark frames Camera - ASI533 Scope - 750mm F5 Skywatcher Newt. Guided. Optolong CLSCDD filter. #deepskyphotography #universetoday #outerspace #stars #deepskyobject #spaceart #astrophotography #deepsky #spacegirl #nightskyphotography #nightskyporn #apod #aapod2 #skywatcheraustralia #astroworld #cosmos #longexposure #asi533 #sculptorgalaxy #reflectionnebula #telescopes #backyardastronomy #galaxy #astrobin #astronomy #astrochick #astro https://www.instagram.com/p/CQVBXeepho7/?utm_medium=tumblr

[quantumd3]

Young Stars and Dusty Nebulae in Taurus: This complex of dusty nebulae lingers along the edge of the Taurus molecular cloud, a mere 450 light-years distant. Stars are forming on the cosmic scene. Composed from almost 40 hours of image data, the 2 degree wide telescopic field of view includes some youthful T-Tauriclass stars  embedded in the remnants of their natal clouds at the right. Millions of years old and still going through stellar adolescence, the stars are variable in brightness and in the late phases of their gravitational collapse. Their core temperatures will rise to sustain nuclear fusion as they grow into stable, low mass, main sequence stars, a stage of stellar evolution achieved by our middle-aged Sun about 4.5 billion years ago. Another youthful variable star, V1023 Tauri, can be spotted on the left. Within its yellowish dust cloud, it lies next to the striking blue reflectionnebula  Cederblad 30, also known as LBN 782. Just above the bright bluish reflection nebula is dusty dark nebula Barnard 7. . . . Image Credit & Copyright: Lloyd L. Smith,Deep Sky West/NASA/APOD. http://ift.tt/2oBpZ2s

[spacesci2u-blog]

#pictureoftheday NGC 2170: Still Life with Reflecting Dust In this beautiful celestial still life composed with a cosmic brush, dusty nebula NGC 2170 shines at the upper left. Reflecting the light of nearby hot stars, NGC 2170 is joined by other bluish reflectionnebulae,  a compact red emission region, and streamers of obscuring dust against a backdrop of stars. Like the common household items still life painters often choose for their subjects, the clouds of gas, dust, and hot stars pictured here are also commonly found in this setting - a massive, star-forming molecular cloud in the constellation of the Unicorn (Monoceros). The giant molecular cloud, Mon R2, is impressively close, estimated to be only 2,400 light-years or so away. At that distance, this canvas would be about 15 light-years across. #aniastronomy #aniastrophysics

[newoldstockphotos]

The Reflection Nebula in Orion

[spacettf]

NGC 6888 Crescent Nebula by VisualUniverse on Flickr.