Dark Ball in Inverted Starfield

Astronomy Picture of the Day Discover the cosmos!Each day a different image or photograph of our fascinating universe isfeatured, along with a brief explanation written by a professional astronomer. 2022 November 6 Dark Ball in Inverted Starfield Image Credit: Jim Lafferty Explanation: Does this strange dark ball look somehow familiar?If so, that might be because it is our Sun.In the featured image from 2012, a detailed solar view was captured originally in a very specific color of red light, then rendered in black and white, and then color inverted.Once complete, the resulting image was added to a starfield, then also color inverted.Visible in the image of the Sun are long light filaments, dark active regions, prominences peeking around the edge, and a moving carpet of hot gas.The surface of our Sun can be a busy place, in particular during Solar Maximum, the time when its surface magnetic field is wound up the most.Besides an active Sun being so picturesque, the plasma expelled can also become picturesque when it impacts the Earth's magnetosphere and creates auroras. Compute it Yourself: Browse 2,900+ codes in the Astrophysics Source Code Library Tomorrow's picture: nebular mystery <| Archive| Submissions | Index| Search| Calendar| RSS| Education| About...

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InSight's Final Selfie

APOD: 2022 November 4 - InSight's Final Selfie Discover the cosmos!Each day a different image or photograph of our fascinating universe isfeatured, along with a brief explanation written by a professional astronomer. 2022 November 4 InSight's Final Selfie Image Credit: NASA, JPL-Caltech, Mars InSight Explanation: The Mars InSight lander returned itsfirst image fromthe Red Planet's flat, equatorialElysium Planitiaafter a successful touchdown on November 26, 2018.The history making mission to explore the martianInterior using Seismic investigations, geodesy, and heat transporthas been operating for over 1,400 martian days or sols.In that time the InSight mission has detected more than 1,300 marsquakes and recorded data fromMars-shaking meteoroidimpacts, observing how the seismic waves travel to provide aglimpse inside Mars.Analyzing the archive of data collected is expectedto yield discoveriesfor decades.But InSight's final operational sol is likely not far off.The reason is evidentin thisselfierecorded earlier this year showingits deck and large, 2-meter-wide solar panels covered with dust.Kicked up by martian winds the dust continues to accumulate anddrastically reduce the powerthat can be generated by InSight's solar panels. Tomorrow's picture: light-weekend <| Archive| Submissions | Index| Search| Calendar| RSS| Education| About APOD| Discuss| > Authors & editors: Robert Nemiroff(MTU) &Jerry Bonnell (UMCP)NASA Official: Phillip NewmanSpecific rights apply.NASA WebPrivacy...

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Lunar Eclipse at the South Pole

Astronomy Picture of the Day Discover the cosmos!Each day a different image or photograph of our fascinating universe isfeatured, along with a brief explanation written by a professional astronomer. 2022 November 5 Lunar Eclipse at the South Pole Image Credit &Copyright: Aman Chokshi Explanation: Last May 16 the Moonslid through Earth's shadow, completely immersed in the planet'sdark umbrafor about 1 hour and 25 minutes during a total lunar eclipse.In this composited timelapse view,the partial and total phasesof the eclipse were captured as the Moon tracked above the horizonfrom Amundsen-Scott South Pole Station.There it shared a cold and starry south polar night with asurging display of the aurora australisand central Milky Way.In the foreground are the BICEP (right) andSouth Pole telescopes at the southernmost station's Dark Sector Laboratory.But while polar skies can be spectacular,you won't want togo to the South Poleto view the total lunar eclipsecoming up on November 8.Instead, that eclipse can be seen fromlocations in Asia, Australia, the Pacific, the Americas and Northern Europe.It will be your last chance to watch atotal lunar eclipse until 2025. Tomorrow's picture: inverted Sun day <| Archive| Submissions | Index| Search| Calendar| RSS| Education| About APOD| Discuss| > Authors & editors: Robert Nemiroff(MTU) &Jerry...

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M33: The Triangulum Galaxy

APOD: 2022 November 3 - M33: The Triangulum Galaxy Discover the cosmos!Each day a different image or photograph of our fascinating universe isfeatured, along with a brief explanation written by a professional astronomer. 2022 November 3 M33: The Triangulum Galaxy Image Credit &Copyright: Processing -Robert GendlerData -Hubble Legacy Archive,KPNO,NOIRLab,NSF,Aura,Amateur Sources Explanation: The small, northern constellationTriangulumharbors this magnificent face-on spiral galaxy, M33.Its popular names include the Pinwheel Galaxy or justthe Triangulum Galaxy.M33 is over 50,000 light-years in diameter, third largest in theLocalGroup of galaxies after the Andromeda Galaxy (M31), and ourown Milky Way.About3 million light-years from the Milky Way,M33 is itself thought to be a satellite of theAndromeda Galaxy andastronomersin these two galaxies would likely have spectacular views ofeach other's grand spiral star systems.As for the view from the Milky Way,thissharp image combines data from telescopes on and around planetEarth to show off M33's blue star clustersand pinkish star forming regions alongthe galaxy's loosely wound spiral arms.In fact, thecavernous NGC 604is thebrightest star forming region, seen here at about the 1 o'clock positionfrom the galaxy center.Like M31, M33's population of well-measured variable starshave helped make this nearby spiral a cosmic yardstick forestablishingthe distancescale of the Universe. Tomorrow's picture: pixels in space <|...

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InSight's Final Selfie

Astronomy Picture of the Day Discover the cosmos!Each day a different image or photograph of our fascinating universe isfeatured, along with a brief explanation written by a professional astronomer. 2022 November 4 InSight's Final Selfie Image Credit: NASA, JPL-Caltech, Mars InSight Explanation: The Mars InSight lander returned itsfirst image fromthe Red Planet's flat, equatorialElysium Planitiaafter a successful touchdown on November 26, 2018.The history making mission to explore the martianInterior using Seismic investigations, geodesy, and heat transporthas been operating for over 1,400 martian days or sols.In that time the InSight mission has detected more than 1,300 marsquakes and recorded data fromMars-shaking meteoroidimpacts, observing how the seismic waves travel to provide aglimpse inside Mars.Analyzing the archive of data collected is expectedto yield discoveriesfor decades.But InSight's final operational sol is likely not far off.The reason is evidentin thisselfierecorded earlier this year showingits deck and large, 2-meter-wide solar panels covered with dust.Kicked up by martian winds the dust continues to accumulate anddrastically reduce the powerthat can be generated by InSight's solar panels. Tomorrow's picture: light-weekend <| Archive| Submissions | Index| Search| Calendar| RSS| Education| About APOD| Discuss| > Authors & editors: Robert Nemiroff(MTU) &Jerry Bonnell (UMCP)NASA Official: Phillip NewmanSpecific rights apply.NASA WebPrivacy Policy and Important...

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A Partial Eclipse of an Active Sun

APOD: 2022 November 2 - A Partial Eclipse of an Active Sun Discover the cosmos!Each day a different image or photograph of our fascinating universe isfeatured, along with a brief explanation written by a professional astronomer. A Partial Eclipse of an Active Sun Video Credit: Ralf Burkart; h/t Maciej Libert (AG) Explanation: Watch for three things in this unusual eclipse video. First, watch for a big dark circle to approach from the right to block out more and more of the Sun.This dark circle is the Moon, and the video was made primarily to capture this partial solar eclipse last week.Next, watch a large solar prominence hover and shimmer over the Sun's edge.A close look will show that part of it is actually falling back to the Sun.The prominence is made of hot plasma that is temporarily held aloft by the Sun's changing magnetic field.Finally, watch the Sun's edge waver.What is wavering is a dynamic carpet of hot gas tubes rising and falling through the Sun's chromosphere -- tubes known as spicules.The entire 4-second time-lapse video covers a time of about ten minutes, although the Sun itself is expected to last another 5 billion years. Partial Solar Eclipse in October 2022:...

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M33: The Triangulum Galaxy

Astronomy Picture of the Day Discover the cosmos!Each day a different image or photograph of our fascinating universe isfeatured, along with a brief explanation written by a professional astronomer. 2022 November 3 M33: The Triangulum Galaxy Image Credit &Copyright: Processing -Robert GendlerData -Hubble Legacy Archive,KPNO,NOIRLab,NSF,Aura,Amateur Sources Explanation: The small, northern constellationTriangulumharbors this magnificent face-on spiral galaxy, M33.Its popular names include the Pinwheel Galaxy or justthe Triangulum Galaxy.M33 is over 50,000 light-years in diameter, third largest in theLocalGroup of galaxies after the Andromeda Galaxy (M31), and ourown Milky Way.About3 million light-years from the Milky Way,M33 is itself thought to be a satellite of theAndromeda Galaxy andastronomersin these two galaxies would likely have spectacular views ofeach other's grand spiral star systems.As for the view from the Milky Way,thissharp image combines data from telescopes on and around planetEarth to show off M33's blue star clustersand pinkish star forming regions alongthe galaxy's loosely wound spiral arms.In fact, thecavernous NGC 604is thebrightest star forming region, seen here at about the 1 o'clock positionfrom the galaxy center.Like M31, M33's population of well-measured variable starshave helped make this nearby spiral a cosmic yardstick forestablishingthe distancescale of the Universe. Tomorrow's picture: pixels in space <| Archive| Submissions | Index|...

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NGC 6357: The Lobster Nebula

APOD: 2022 November 1 - NGC 6357: The Lobster Nebula Discover the cosmos!Each day a different image or photograph of our fascinating universe isfeatured, along with a brief explanation written by a professional astronomer. 2022 November 1 NGC 6357: The Lobster Nebula Image Credit: CTIO/NOIRLab/DOE/NSF/AURA;Processing: T. A. Rector (U. Alaska Anchorage/NSF’s NOIRLab), J. Miller (Gemini Obs./NSF’s NOIRLab), M. Zamani & D. de Martin (NSF’s NOIRLab) Explanation: Why is the Lobster Nebula forming some of the most massive stars known?No one is yet sure. Cataloged as NGC 6357, the Lobster Nebula houses the open star cluster Pismis 24 near its center -- a home to unusually bright and massive stars. The overall red glow near the inner star forming region results from the emission of ionized hydrogen gas. The surrounding nebula, featured here, holds a complex tapestry of gas, dark dust, stars still forming, and newly born stars. The intricate patterns are caused by complex interactions between interstellar winds, radiation pressures, magnetic fields, and gravity. The image was taken with DOE's Dark Energy Camera on the 4-meter Blanco Telescope at the Cerro Tololo Inter-American Observatory in Chile.NGC 6357 spans about 400 light years and lies about 8,000 light years away toward the...

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A Partial Eclipse of an Active Sun

Astronomy Picture of the Day Discover the cosmos!Each day a different image or photograph of our fascinating universe isfeatured, along with a brief explanation written by a professional astronomer. A Partial Eclipse of an Active Sun Video Credit: Ralf Burkart; h/t Maciej Libert (AG) Explanation: Watch for three things in this unusual eclipse video. First, watch for a big dark circle to approach from the right to block out more and more of the Sun.This dark circle is the Moon, and the video was made primarily to capture this partial solar eclipse last week.Next, watch a large solar prominence hover and shimmer over the Sun's edge.A close look will show that part of it is actually falling back to the Sun.The prominence is made of hot plasma that is temporarily held aloft by the Sun's changing magnetic field.Finally, watch the Sun's edge waver.What is wavering is a dynamic carpet of hot gas tubes rising and falling through the Sun's chromosphere -- tubes known as spicules.The entire 4-second time-lapse video covers a time of about ten minutes, although the Sun itself is expected to last another 5 billion years. Partial Solar Eclipse in October 2022: Notable Submissions to APOD Tomorrow's picture: open...

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LDN 43: The Cosmic Bat Nebula

APOD: 2022 October 31 - LDN 43: The Cosmic Bat Nebula Discover the cosmos!Each day a different image or photograph of our fascinating universe isfeatured, along with a brief explanation written by a professional astronomer. 2022 October 31 LDN 43: The Cosmic Bat Nebula Image Credit & Copyright: Mark Hanson and Mike Selby;Text: Michelle Thaller (NASA's GSFC) Explanation: What is the most spook-tacular nebula in the galaxy? One contender is LDN 43, which bears an astonishing resemblance to a vast cosmic bat flying amongst the stars on a dark Halloween night. Located about 1400 light years away in the constellation Ophiuchus, this molecular cloud is dense enough to block light not only from background stars, but from wisps of gas lit up by the nearby reflection nebula LBN 7. Far from being a harbinger of death, this 12-light year-long filament of gas and dust is actually a stellar nursery. Glowing with eerie light, the bat is lit up from inside by dense gaseous knots that have just formed young stars. Celebrate: Halloween With NASA Online Tomorrow's picture: massive stars <| Archive| Submissions | Index| Search| Calendar| RSS| Education| About APOD| Discuss| > Authors & editors: Robert Nemiroff(MTU) &Jerry Bonnell (UMCP)NASA Official:...

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NGC 6357: The Lobster Nebula

Astronomy Picture of the Day Discover the cosmos!Each day a different image or photograph of our fascinating universe isfeatured, along with a brief explanation written by a professional astronomer. 2022 November 1 NGC 6357: The Lobster Nebula Image Credit: CTIO/NOIRLab/DOE/NSF/AURA;Processing: T. A. Rector (U. Alaska Anchorage/NSF’s NOIRLab), J. Miller (Gemini Obs./NSF’s NOIRLab), M. Zamani & D. de Martin (NSF’s NOIRLab) Explanation: Why is the Lobster Nebula forming some of the most massive stars known?No one is yet sure. Cataloged as NGC 6357, the Lobster Nebula houses the open star cluster Pismis 24 near its center -- a home to unusually bright and massive stars. The overall red glow near the inner star forming region results from the emission of ionized hydrogen gas. The surrounding nebula, featured here, holds a complex tapestry of gas, dark dust, stars still forming, and newly born stars. The intricate patterns are caused by complex interactions between interstellar winds, radiation pressures, magnetic fields, and gravity. The image was taken with DOE's Dark Energy Camera on the 4-meter Blanco Telescope at the Cerro Tololo Inter-American Observatory in Chile.NGC 6357 spans about 400 light years and lies about 8,000 light years away toward the constellation of the Scorpion. Tomorrow's...

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Night on a Spooky Planet

APOD: 2022 October 30 - Night on a Spooky Planet Discover the cosmos!Each day a different image or photograph of our fascinating universe isfeatured, along with a brief explanation written by a professional astronomer. 2022 October 30 Night on a Spooky Planet Image Credit & Copyright: Stéphane Vetter(Nuits sacrées) Explanation: What spooky planet is this?PlanetEarth of course, on a dark and stormy night in 2013 at Hverir, a geothermally active areaalong thevolcanic landscapein northeastern Iceland.Triggered by solar activity,geomagnetic stormsproduced theauroral display in the starry night sky.The ghostly towers of steam and gas are ventingfrom fumarolesand danced against the eerie greenish light.For now, auroral apparitions are increasing asour Sunapproaches amaximum in its11 year solar activity cycle.And pretty soon,ghostlyshapes maydance in your neighborhood too. Tomorrow's picture: big bat <| Archive| Submissions | Index| Search| Calendar| RSS| Education| About APOD| Discuss| > Authors & editors: Robert Nemiroff(MTU) &Jerry Bonnell (UMCP)NASA Official: Phillip NewmanSpecific rights apply.NASA WebPrivacy Policy and Important NoticesA service of:ASD atNASA /GSFC,NASA Science Activation& Michigan Tech. U.

LDN 43: The Cosmic Bat Nebula

Astronomy Picture of the Day Discover the cosmos!Each day a different image or photograph of our fascinating universe isfeatured, along with a brief explanation written by a professional astronomer. 2022 October 31 LDN 43: The Cosmic Bat Nebula Image Credit & Copyright: Mark Hanson and Mike Selby;Text: Michelle Thaller (NASA's GSFC) Explanation: What is the most spook-tacular nebula in the galaxy? One contender is LDN 43, which bears an astonishing resemblance to a vast cosmic bat flying amongst the stars on a dark Halloween night. Located about 1400 light years away in the constellation Ophiuchus, this molecular cloud is dense enough to block light not only from background stars, but from wisps of gas lit up by the nearby reflection nebula LBN 7. Far from being a harbinger of death, this 12-light year-long filament of gas and dust is actually a stellar nursery. Glowing with eerie light, the bat is lit up from inside by dense gaseous knots that have just formed young stars. Celebrate: Halloween With NASA Online Tomorrow's picture: massive stars <| Archive| Submissions | Index| Search| Calendar| RSS| Education| About APOD| Discuss| > Authors & editors: Robert Nemiroff(MTU) &Jerry Bonnell (UMCP)NASA Official: Phillip NewmanSpecific rights apply.NASA WebPrivacy Policy...

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LDN 673: Dark Clouds in Aquila

APOD: 2022 October 29 - LDN 673: Dark Clouds in Aquila Discover the cosmos!Each day a different image or photograph of our fascinating universe isfeatured, along with a brief explanation written by a professional astronomer. 2022 October 29 LDN 673: Dark Clouds in Aquila Image Credit &Copyright: Frank Sackenheim, Josef Poepsel, Stefan Binnewies(Capella Observatory Team) Explanation: Part of a dark expanse that splitsthe crowded plane of our Milky Way galaxy, the Aquila Rift arcsthrough planet Earth's skiesnear bright star Altair.In eerie silhouette against the Milky Way's faintstarlight,its dusty molecular clouds likely contain raw materialto form hundreds of thousands of stars andastronomers searchthe dark clouds for telltale signs of star birth.This telescopic close-uplooks toward the region at afragmented Aquila dark cloud complex identified as LDN 673,stretching across a field of view slightly wider than the full moon.In the scene, visible indications ofenergetic outflows associatedwith young starsinclude the small red tinted nebulosity RNO 109 above and right ofcenter, and Herbig-Haro objectHH32 below.These dark clouds might look scary,but they're estimated to be some 600 light-years away.At that distance, this field of view spans about 7 light-years. Tomorrow's picture: a dark and spooky night<| Archive| Submissions | Index| Search| Calendar| RSS| Education| About APOD| Discuss|...

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Night on a Spooky Planet

Astronomy Picture of the Day Discover the cosmos!Each day a different image or photograph of our fascinating universe isfeatured, along with a brief explanation written by a professional astronomer. 2022 October 30 Night on a Spooky Planet Image Credit & Copyright: Stéphane Vetter(Nuits sacrées) Explanation: What spooky planet is this?PlanetEarth of course, on a dark and stormy night in 2013 at Hverir, a geothermally active areaalong thevolcanic landscapein northeastern Iceland.Triggered by solar activity,geomagnetic stormsproduced theauroral display in the starry night sky.The ghostly towers of steam and gas are ventingfrom fumarolesand danced against the eerie greenish light.For now, auroral apparitions are increasing asour Sunapproaches amaximum in its11 year solar activity cycle.And pretty soon,ghostlyshapes maydance in your neighborhood too. Tomorrow's picture: big bat <| Archive| Submissions | Index| Search| Calendar| RSS| Education| About APOD| Discuss| > Authors & editors: Robert Nemiroff(MTU) &Jerry Bonnell (UMCP)NASA Official: Phillip NewmanSpecific rights apply.NASA WebPrivacy Policy and Important NoticesA service of:ASD atNASA /GSFC,NASA Science Activation& Michigan Tech. U.