{"version": "https://jsonfeed.org/version/1.1", "title": "Astronomy Picture of the Day [ko]", "feed_url": "https://apod.nasa.gov/", "home_page_url": "56", "description": "Astronomy Picture of the Day", "icon": null, "favicon": null, "authors": [{"name": "Unknown", "url": null, "avatar": null}], "language": "en", "expired": null, "hub": null, "items": [{"id": "https://apod.nasa.gov/apod/ap260428.html", "url": "https://apod.nasa.gov/apod/ap260428.html", "external_url": null, "title": "CG 30: Cometary Globules", "content_text": "", "content_html": "\"A
Explanation: \nThey're like mountain peaks, but they are forming stars.\n\nBright-rimmed, flowing shapes gather near the center of\nthis rich starfield toward the borders of the nautical southern\nconstellations Puppis and Vela.\n\nComposed of interstellar gas and \n\ndust, the grouping of\nlight-year sized cometary globules is about 1300 \nlight-years distant.\n\nEnergetic ultraviolet light from nearby hot stars\nhas molded the globules\nand ionized their bright rims.\n\nThe globules also\nstream away from the\nVela supernova remnant which\nmay have influenced their swept-back shapes.\n\nWithin them, cores of cold gas and \ndust are likely \ncollapsing to form\nlow mass stars whose formation will ultimately cause the\nglobules to disperse.\n\nIn fact, cometary globule CG 30 (upper right in the group) sports a\nsmall reddish glow inside its head,\na telltale sign of energetic jets from a \nstar \nin the early stages\nof formation.", "summary": "\"A
Explanation: \nThey're like mountain peaks, but they are forming stars.\n\nBright-rimmed, flowing shapes gather near the center of\nthis rich starfield toward the borders of the nautical southern\nconstellations Puppis and Vela.\n\nComposed of interstellar gas and \n\ndust, the grouping of\nlight-year sized cometary globules is about 1300 \nlight-years distant.\n\nEnergetic ultraviolet light from nearby hot stars\nhas molded the globules\nand ionized their bright rims.\n\nThe globules also\nstream away from the\nVela supernova remnant which\nmay have influenced their swept-back shapes.\n\nWithin them, cores of cold gas and \ndust are likely \ncollapsing to form\nlow mass stars whose formation will ultimately cause the\nglobules to disperse.\n\nIn fact, cometary globule CG 30 (upper right in the group) sports a\nsmall reddish glow inside its head,\na telltale sign of energetic jets from a \nstar \nin the early stages\nof formation.", "image": null, "banner_image": null, "date_published": "2026-04-28T03:00:00Z", "date_modified": "2026-04-28T03:00:00Z", "authors": ["Jerry Bonnell (UMCP)"], "tags": [], "language": null, "attachments": ["\n {\"url\": string, \n 'mime_type': string, \n 'title': strinrg,\n 'size_in_bytes': int,\n 'duration_in_seconds': int\n "]}, {"id": "https://apod.nasa.gov/apod/ap260427.html", "url": "https://apod.nasa.gov/apod/ap260427.html", "external_url": null, "title": "Comet R3 PanSTARRS Behind Satellite Trails", "content_text": "", "content_html": "\"A
Explanation: \nCan you find the comet?\n\nSomewhere through this web of satellite trails is Comet \nC/2025 R3 (PanSTARRS), a bright visitor passing \nthrough the inner \nSolar System.\n\nNow, the\norbiting satellites themselves only \nappear as streaks \nbecause of the long camera exposure, \nover 10 minutes in this case.\n\nOn the contrary, \nto the eye, satellites appear as points that \ndrift slowly across the night sky and shine by \nreflecting sunlight -- \nprimarily just after sunset and before sunrise. \n\nThe featured image was taken just before sunrise two weeks ago from \nBavaria, \nGermany. \n\nPresently, \nComet R3 PanSTARRS is hard to see for even another reason -- \nbecause it is so (angularly) close to the \nSun.\n\nAs the comet rounds the Sun, it will be \nbest seen in coming weeks from \nsouthern hemispheree skies, although then it will be \nheading out to interstellar space and fading.\n\nIf you haven't yet found the comet, \ndon't despair; please take a \ncloser look just above the image center.", "summary": "\"A
Explanation: \nCan you find the comet?\n\nSomewhere through this web of satellite trails is Comet \nC/2025 R3 (PanSTARRS), a bright visitor passing \nthrough the inner \nSolar System.\n\nNow, the\norbiting satellites themselves only \nappear as streaks \nbecause of the long camera exposure, \nover 10 minutes in this case.\n\nOn the contrary, \nto the eye, satellites appear as points that \ndrift slowly across the night sky and shine by \nreflecting sunlight -- \nprimarily just after sunset and before sunrise. \n\nThe featured image was taken just before sunrise two weeks ago from \nBavaria, \nGermany. \n\nPresently, \nComet R3 PanSTARRS is hard to see for even another reason -- \nbecause it is so (angularly) close to the \nSun.\n\nAs the comet rounds the Sun, it will be \nbest seen in coming weeks from \nsouthern hemispheree skies, although then it will be \nheading out to interstellar space and fading.\n\nIf you haven't yet found the comet, \ndon't despair; please take a \ncloser look just above the image center.", "image": null, "banner_image": null, "date_published": "2026-04-27T03:00:00Z", "date_modified": "2026-04-27T03:00:00Z", "authors": ["Jerry Bonnell (UMCP)"], "tags": [], "language": null, "attachments": ["\n {\"url\": string, \n 'mime_type': string, \n 'title': strinrg,\n 'size_in_bytes': int,\n 'duration_in_seconds': int\n "]}, {"id": "https://apod.nasa.gov/apod/ap260426.html", "url": "https://apod.nasa.gov/apod/ap260426.html", "external_url": null, "title": "Mystic Mountain Monster being Destroyed", "content_text": "", "content_html": "\"The
Explanation: \nInside the head of this interstellar monster is a star that is slowly destroying it. \n\nThe huge monster, actually an \ninanimate series of pillars of gas and dust, measures \nlight years in length. \n\nThe in-head star is not itself visible through the \nopaque \ninterstellar dust \nbut is bursting out partly by ejecting opposing beams of energetic particles called \nHerbig-Haro jets. \n\nLocated about 7,500 light years away in the \nCarina Nebula and known informally as \nMystic Mountain, the appearance of these pillars \nis dominated by dark dust even though they are composed mostly of clear \nhydrogen gas. \n\nThe featured image was taken with the \nHubble Space Telescope.\n\nAll over these pillars, the \nenergetic light and \nwinds from massive newly formed stars are \nevaporating and dispersing the dusty stellar nurseries in which they formed. \n\nWithin a few million years, the head of this giant, \nas well as most of its body, will have been \ncompletely evaporated by internal and surrounding stars.", "summary": "\"The
Explanation: \nInside the head of this interstellar monster is a star that is slowly destroying it. \n\nThe huge monster, actually an \ninanimate series of pillars of gas and dust, measures \nlight years in length. \n\nThe in-head star is not itself visible through the \nopaque \ninterstellar dust \nbut is bursting out partly by ejecting opposing beams of energetic particles called \nHerbig-Haro jets. \n\nLocated about 7,500 light years away in the \nCarina Nebula and known informally as \nMystic Mountain, the appearance of these pillars \nis dominated by dark dust even though they are composed mostly of clear \nhydrogen gas. \n\nThe featured image was taken with the \nHubble Space Telescope.\n\nAll over these pillars, the \nenergetic light and \nwinds from massive newly formed stars are \nevaporating and dispersing the dusty stellar nurseries in which they formed. \n\nWithin a few million years, the head of this giant, \nas well as most of its body, will have been \ncompletely evaporated by internal and surrounding stars.", "image": null, "banner_image": null, "date_published": "2026-04-26T03:00:00Z", "date_modified": "2026-04-26T03:00:00Z", "authors": ["Jerry Bonnell (UMCP)"], "tags": [], "language": null, "attachments": ["\n {\"url\": string, \n 'mime_type': string, \n 'title': strinrg,\n 'size_in_bytes': int,\n 'duration_in_seconds': int\n "]}, {"id": "https://apod.nasa.gov/apod/ap260425.html", "url": "https://apod.nasa.gov/apod/ap260425.html", "external_url": null, "title": "The Persistence of Sunlight", "content_text": "", "content_html": "\"See
Explanation: \n\nThis seaside\nsunset offered\na surreal experience, captured\nin a sea and skyscape from the west coast of\nSardinia, Italy, planet Earth.\n\nThe Daliesque scene\nis a composition\nof sequential exposures made with a camera and long telephoto lens.\n\nThe Sun is\nnot\nmelting, though.\n\nIts shifting and fluid appearance as it nears the\nhorizon is caused as refraction along the line of sight\nchanges and creates distorted images or\nmirages of the\nreddened solar disk.\n\nThe changes in atmospheric refraction correspond to\natmospheric layers\nwith sharply different temperatures and\ndensities.\n\nAnother famous but fleeting effect of atmospheric refraction produced\nby a long sight-line to the setting (or rising) Sun is\noften called the green flash.", "summary": "\"See
Explanation: \n\nThis seaside\nsunset offered\na surreal experience, captured\nin a sea and skyscape from the west coast of\nSardinia, Italy, planet Earth.\n\nThe Daliesque scene\nis a composition\nof sequential exposures made with a camera and long telephoto lens.\n\nThe Sun is\nnot\nmelting, though.\n\nIts shifting and fluid appearance as it nears the\nhorizon is caused as refraction along the line of sight\nchanges and creates distorted images or\nmirages of the\nreddened solar disk.\n\nThe changes in atmospheric refraction correspond to\natmospheric layers\nwith sharply different temperatures and\ndensities.\n\nAnother famous but fleeting effect of atmospheric refraction produced\nby a long sight-line to the setting (or rising) Sun is\noften called the green flash.", "image": null, "banner_image": null, "date_published": "2026-04-25T03:00:00Z", "date_modified": "2026-04-25T03:00:00Z", "authors": ["Jerry Bonnell (UMCP)"], "tags": [], "language": null, "attachments": ["\n {\"url\": string, \n 'mime_type': string, \n 'title': strinrg,\n 'size_in_bytes': int,\n 'duration_in_seconds': int\n "]}, {"id": "https://apod.nasa.gov/apod/ap260424.html", "url": "https://apod.nasa.gov/apod/ap260424.html", "external_url": null, "title": "Young Moon and Sister Stars", "content_text": "", "content_html": "\"See
Explanation: \n\nSunlit arms of a\ncrescent moon\nseem to embrace the faint lunar\nnight side in this dramatic celestial view from planet Earth.\n\nThe single telephoto exposure tracking the sky was captured on\nthe night of April 19,\nwhen a two day old Moon was near perigee in its elliptical orbit.\n\nOn that date, the young Moon was also close on the sky to the lovely\nPleiades Star Cluster.\n\nWith the moonlight dimmed by clouds the Pleiades\nsister stars gather\nbelow the Moon's bright crescent, seen through a faint but colorful\nlunar corona.\n\nThe lunar night side is illuminated\nby earthshine,\nsunlight reflected from the Earth itself.\n\nThe Moon's ashen glow,\nalso known as the \"old moon in the young moon's arms,\"\ntends to be bright in the northern hemisphere spring.\n\nAnd for now, the Moon's orbit takes it near the\nPleiades\nstars each month in planet Earth's sky,\nthough their close conjunctions are easiest to\nsee when the Moon\nis near a crescent phase.", "summary": "\"See
Explanation: \n\nSunlit arms of a\ncrescent moon\nseem to embrace the faint lunar\nnight side in this dramatic celestial view from planet Earth.\n\nThe single telephoto exposure tracking the sky was captured on\nthe night of April 19,\nwhen a two day old Moon was near perigee in its elliptical orbit.\n\nOn that date, the young Moon was also close on the sky to the lovely\nPleiades Star Cluster.\n\nWith the moonlight dimmed by clouds the Pleiades\nsister stars gather\nbelow the Moon's bright crescent, seen through a faint but colorful\nlunar corona.\n\nThe lunar night side is illuminated\nby earthshine,\nsunlight reflected from the Earth itself.\n\nThe Moon's ashen glow,\nalso known as the \"old moon in the young moon's arms,\"\ntends to be bright in the northern hemisphere spring.\n\nAnd for now, the Moon's orbit takes it near the\nPleiades\nstars each month in planet Earth's sky,\nthough their close conjunctions are easiest to\nsee when the Moon\nis near a crescent phase.", "image": null, "banner_image": null, "date_published": "2026-04-24T03:00:00Z", "date_modified": "2026-04-24T03:00:00Z", "authors": ["Jerry Bonnell (UMCP)"], "tags": [], "language": null, "attachments": ["\n {\"url\": string, \n 'mime_type': string, \n 'title': strinrg,\n 'size_in_bytes': int,\n 'duration_in_seconds': int\n "]}, {"id": "https://apod.nasa.gov/apod/ap260423.html", "url": "https://apod.nasa.gov/apod/ap260423.html", "external_url": null, "title": "Large Scale Structure of the Universe", "content_text": "", "content_html": "\"The
Explanation: \n\nThis is a map of the universe.\n\nThe Dark Energy Spectroscopic Instrument (DESI) at Kitt Peak National Observatory, Arizona, has finished its five-year survey.\n\nIt observed more than 47 million galaxies and quasars and created a 3D map centered on the Earth.\n\nToday's featured image shows a thin slice of these data: the black gaps indicate where our Galaxy obscures distant objects.\n\nThe feathery web in the inset shows the large scale structure of the universe.\n\nLight of the most distant galaxies shown here travelled for 11 billion years to reach the Earth.\n\nGalaxies cluster throughout cosmic history under the competing influences of gravity and dark energy, responsible for the accelerated expansion of the universe.\n\nAnalysis of early DESI results hinted at the possibility that dark energy, described as a cosmological constant by Albert Einstein, may not be constant after all.\n\nBut we still have to wait for the analysis of the now complete dataset.\n\nThe nature of dark energy is the biggest mystery of cosmology.", "summary": "\"The
Explanation: \n\nThis is a map of the universe.\n\nThe Dark Energy Spectroscopic Instrument (DESI) at Kitt Peak National Observatory, Arizona, has finished its five-year survey.\n\nIt observed more than 47 million galaxies and quasars and created a 3D map centered on the Earth.\n\nToday's featured image shows a thin slice of these data: the black gaps indicate where our Galaxy obscures distant objects.\n\nThe feathery web in the inset shows the large scale structure of the universe.\n\nLight of the most distant galaxies shown here travelled for 11 billion years to reach the Earth.\n\nGalaxies cluster throughout cosmic history under the competing influences of gravity and dark energy, responsible for the accelerated expansion of the universe.\n\nAnalysis of early DESI results hinted at the possibility that dark energy, described as a cosmological constant by Albert Einstein, may not be constant after all.\n\nBut we still have to wait for the analysis of the now complete dataset.\n\nThe nature of dark energy is the biggest mystery of cosmology.", "image": null, "banner_image": null, "date_published": "2026-04-23T03:00:00Z", "date_modified": "2026-04-23T03:00:00Z", "authors": ["Jerry Bonnell (UMCP)"], "tags": [], "language": null, "attachments": ["\n {\"url\": string, \n 'mime_type': string, \n 'title': strinrg,\n 'size_in_bytes': int,\n 'duration_in_seconds': int\n "]}, {"id": "https://apod.nasa.gov/apod/ap260422.html", "url": "https://apod.nasa.gov/apod/ap260422.html", "external_url": null, "title": "Earthset with an iPhone", "content_text": "", "content_html": "
Explanation: \n\nWhat does it mean for \nthe Earth \nto set? Artemis II Commander Reid Wiseman gave us \nanother spectacular view of Earth\nfrom their historic flyby of the Moon. \nCommander Wiseman's video, \ntaken with an iPhone at 8x zoom, shows our entire planet gradually blocked from view by the Moon. On the Earth, the 24-hour planetary rotation causes the Sun to set below your horizon every night. However, on Artemis II \nthe Earthset \nwas caused not by \nthe Moon\u2019s rotation \nbut by the spacecraft moving behind the Moon (at about 55 seconds in \nthis video). \nOnce rare, views of Earth are now taken many times a day from many spacecraft, including NASA\u2019s \nSWOT (Surface Water and Ocean Topography) satellite \ntracking freshwater resources and \nUSGS Landsat 8 and 9 satellites \nsupporting water management for farmers, \nfor example. Space agencies around our home planet now work together to provide unique and ever-improving \nviews of our Earth.", "summary": "
Explanation: \n\nWhat does it mean for \nthe Earth \nto set? Artemis II Commander Reid Wiseman gave us \nanother spectacular view of Earth\nfrom their historic flyby of the Moon. \nCommander Wiseman's video, \ntaken with an iPhone at 8x zoom, shows our entire planet gradually blocked from view by the Moon. On the Earth, the 24-hour planetary rotation causes the Sun to set below your horizon every night. However, on Artemis II \nthe Earthset \nwas caused not by \nthe Moon\u2019s rotation \nbut by the spacecraft moving behind the Moon (at about 55 seconds in \nthis video). \nOnce rare, views of Earth are now taken many times a day from many spacecraft, including NASA\u2019s \nSWOT (Surface Water and Ocean Topography) satellite \ntracking freshwater resources and \nUSGS Landsat 8 and 9 satellites \nsupporting water management for farmers, \nfor example. Space agencies around our home planet now work together to provide unique and ever-improving \nviews of our Earth.", "image": null, "banner_image": null, "date_published": "2026-04-22T03:00:00Z", "date_modified": "2026-04-22T03:00:00Z", "authors": ["Jerry Bonnell (UMCP)"], "tags": [], "language": null, "attachments": ["\n {\"url\": string, \n 'mime_type': string, \n 'title': strinrg,\n 'size_in_bytes': int,\n 'duration_in_seconds': int\n "]}]}