{"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/ap260719.html", "url": "https://apod.nasa.gov/apod/ap260719.html", "external_url": null, "title": "Flying Saucer Crash Lands in Utah Desert", "content_text": "", "content_html": "\"The
Explanation: \nA flying saucer from outer space crash-landed in the \nUtah desert after being tracked by radar and chased by helicopters. \n\nThe year was 2004, and no space aliens were involved. \n\nThe saucer, pictured here, was the \nGenesis \nsample return capsule, part of a human-made robot\nGenesis \nspaceship \nlaunched in 2001 by NASA itself to study the Sun. \n\nThe unexpectedly\nhard landing\nat over 300 kilometers per hour occurred because the\nparachutes \ndid not open as planned. \n\nThe Genesis mission had been orbiting the\nSun collecting\nsolar wind particles that are\nusually deflected away by\nEarth's magnetic field.\n\nDespite the crash landing, \nmany return samples remained in good enough condition to analyze.\n\nGenesis-related discoveries included new details about the\ncomposition of the\nSun and how the abundance of some types of \nelements differ \nacross the Solar System.\n\nThese \nresults have provided intriguing clues into details of how the \nSun and planets formed billions of years ago.", "summary": "\"The
Explanation: \nA flying saucer from outer space crash-landed in the \nUtah desert after being tracked by radar and chased by helicopters. \n\nThe year was 2004, and no space aliens were involved. \n\nThe saucer, pictured here, was the \nGenesis \nsample return capsule, part of a human-made robot\nGenesis \nspaceship \nlaunched in 2001 by NASA itself to study the Sun. \n\nThe unexpectedly\nhard landing\nat over 300 kilometers per hour occurred because the\nparachutes \ndid not open as planned. \n\nThe Genesis mission had been orbiting the\nSun collecting\nsolar wind particles that are\nusually deflected away by\nEarth's magnetic field.\n\nDespite the crash landing, \nmany return samples remained in good enough condition to analyze.\n\nGenesis-related discoveries included new details about the\ncomposition of the\nSun and how the abundance of some types of \nelements differ \nacross the Solar System.\n\nThese \nresults have provided intriguing clues into details of how the \nSun and planets formed billions of years ago.", "image": null, "banner_image": null, "date_published": "2026-07-19T03:00:00Z", "date_modified": "2026-07-19T03:00:00Z", "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/ap260718.html", "url": "https://apod.nasa.gov/apod/ap260718.html", "external_url": null, "title": "Shadow and Rainbow", "content_text": "", "content_html": "\"See
Explanation: \n\nAt sunset, an alignment of rainbow and mountain shadow\nwas captured in this remarkable snapshot.\n\nThe stunning view was recorded from a fire lookout on Smith Peak in the\nPlumas National Forest\nnear Portola, California on July 13. \n\nStill, near sunset it's no accident that the\nmajestic mountain shadow seems to point to\nthe center of the graceful rainbow arc.\n\nDue to perspective and the long line of sight the\nmountain shadow naturally forms a\ntapering triangular shape,\nits apex positioned at the point opposite the Sun\non the horizon.\n\nFollowing thunderstorms in the region, the\nrainbow arched across\nthe early evening sky, with\nits colorful and characteristic 42 degree arc formed\nas sunlight is refracted and reflected by the atmospheric water droplets.\n\nThe geometric center of a rainbow arc lies at the antisolar point.\n\nAnd in this scene from the golden hour on\nplanet Earth, that's\nalso opposite the setting Sun along the distant horizon.", "summary": "\"See
Explanation: \n\nAt sunset, an alignment of rainbow and mountain shadow\nwas captured in this remarkable snapshot.\n\nThe stunning view was recorded from a fire lookout on Smith Peak in the\nPlumas National Forest\nnear Portola, California on July 13. \n\nStill, near sunset it's no accident that the\nmajestic mountain shadow seems to point to\nthe center of the graceful rainbow arc.\n\nDue to perspective and the long line of sight the\nmountain shadow naturally forms a\ntapering triangular shape,\nits apex positioned at the point opposite the Sun\non the horizon.\n\nFollowing thunderstorms in the region, the\nrainbow arched across\nthe early evening sky, with\nits colorful and characteristic 42 degree arc formed\nas sunlight is refracted and reflected by the atmospheric water droplets.\n\nThe geometric center of a rainbow arc lies at the antisolar point.\n\nAnd in this scene from the golden hour on\nplanet Earth, that's\nalso opposite the setting Sun along the distant horizon.", "image": null, "banner_image": null, "date_published": "2026-07-18T03:00:00Z", "date_modified": "2026-07-18T03:00:00Z", "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/ap260717.html", "url": "https://apod.nasa.gov/apod/ap260717.html", "external_url": null, "title": "The Dust Trail of Comet Tempel 2", "content_text": "", "content_html": "\"See
Explanation: \n\nComet 10P/Tempel 2\norbits the Sun once every 5.4 years.\n\nCurrently visible in binoculars or small telescopes toward\nthe constellation Capricornus, the\nperiodic\ncomet is captured in this sharp telescopic\nimage from July 11\nsporting a bright nuclear region and pretty greenish coma.\n\nRemarkably, a thin dust trail,\nnot a typical dust tail, is also seen extending both east and west of\nthe Tempel 2 nucleus.\n\nUnlike a\ncomet dust tail,\nwhich tends to temporarily\nfan out in a direction away from the Sun, this dust trail\nis due to the residual dust\nshed during\nmany past\norbits along this ancient periodic comet's orbital plane.\n\nIn fact, Tempel 2's dust trail may get a little narrower and brighter\nfrom our perspective as Earth crosses through the comet's orbital plane\non July 20.\n\nComet 10P/Tempel 2\nwill reach a perihelion on August 2, and make\nits closest approach to Earth on August 3.", "summary": "\"See
Explanation: \n\nComet 10P/Tempel 2\norbits the Sun once every 5.4 years.\n\nCurrently visible in binoculars or small telescopes toward\nthe constellation Capricornus, the\nperiodic\ncomet is captured in this sharp telescopic\nimage from July 11\nsporting a bright nuclear region and pretty greenish coma.\n\nRemarkably, a thin dust trail,\nnot a typical dust tail, is also seen extending both east and west of\nthe Tempel 2 nucleus.\n\nUnlike a\ncomet dust tail,\nwhich tends to temporarily\nfan out in a direction away from the Sun, this dust trail\nis due to the residual dust\nshed during\nmany past\norbits along this ancient periodic comet's orbital plane.\n\nIn fact, Tempel 2's dust trail may get a little narrower and brighter\nfrom our perspective as Earth crosses through the comet's orbital plane\non July 20.\n\nComet 10P/Tempel 2\nwill reach a perihelion on August 2, and make\nits closest approach to Earth on August 3.", "image": null, "banner_image": null, "date_published": "2026-07-17T03:00:00Z", "date_modified": "2026-07-17T03:00:00Z", "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/ap260716.html", "url": "https://apod.nasa.gov/apod/ap260716.html", "external_url": null, "title": "NGC 300: A Cosmic Gemstone with Stars and Gas Clouds", "content_text": "", "content_html": "\"A
Explanation: \n \n This sparkling, colorful gemstone is a spiral galaxy, NGC 300.\n\n It is one of the closest spiral galaxies to Earth, only about 6 million light-years away.\n \n But does it really look like this?\n\n Here is a more standard portrait of it.\n\n This unusual image combines the light from the stars and dust within the galaxy with the light from ionized clouds of interstellar gas shown in red (Sulphur), green (Hydrogen) and blue (Oxygen).\n\n Combining red and green light in different proportions makes yellow or orange light, most visible in the image.\n\n Light from other ionized gases is also at work in neon signs, fluorescent tubes and street lights.\n\n These massive clouds of ionized gas are typically created by young, massive stars that produce high-energy ultraviolet radiation capable of ionizing the gas.\n\n Massive stars are short-lived, compared with lighter stars like our sun, and explode as supernovas at the end of their lives.\n\n Some of the colorful clouds in the image could be hiding supernova remnants.", "summary": "\"A
Explanation: \n \n This sparkling, colorful gemstone is a spiral galaxy, NGC 300.\n\n It is one of the closest spiral galaxies to Earth, only about 6 million light-years away.\n \n But does it really look like this?\n\n Here is a more standard portrait of it.\n\n This unusual image combines the light from the stars and dust within the galaxy with the light from ionized clouds of interstellar gas shown in red (Sulphur), green (Hydrogen) and blue (Oxygen).\n\n Combining red and green light in different proportions makes yellow or orange light, most visible in the image.\n\n Light from other ionized gases is also at work in neon signs, fluorescent tubes and street lights.\n\n These massive clouds of ionized gas are typically created by young, massive stars that produce high-energy ultraviolet radiation capable of ionizing the gas.\n\n Massive stars are short-lived, compared with lighter stars like our sun, and explode as supernovas at the end of their lives.\n\n Some of the colorful clouds in the image could be hiding supernova remnants.", "image": null, "banner_image": null, "date_published": "2026-07-16T03:00:00Z", "date_modified": "2026-07-16T03:00:00Z", "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/ap260715.html", "url": "https://apod.nasa.gov/apod/ap260715.html", "external_url": null, "title": "Red Sprites in the Tatacoa Desert", "content_text": "", "content_html": "\"Lightning
Explanation: \nIs there an angry \nSith \nusing \nforce lightning \nin the \nTatacoa Desert? \nThis is not science fiction, but a \nred sprite \nwith multiple \nstreamers! \nOrdinary \nlightning \noccurs when thundercloud particles collide, lose their electrons, and build up negative charge at the cloud bottom. The cloud\u2019s negative charge repels negative charge deeper into the Earth, leaving Earth\u2019s surface positively charged. The \nopposite charges attract, \nreaching towards each other and superheating the air into a white strike of \nplasma. \nRed sprites \nare \nmillisecond events triggered by \npositive cloud-to-ground \nlightning. They extend up into \nthe mesosphere where the air is too thin for \nthunder. \nTheir red glow comes from heated \nmolecular nitrogen. \nThere are \nseveral potential causes \nfor red sprites, including that the preceding \npositive lightning exposes the negatively charged cloud core \nto the positively charged upper atmosphere, allowing those charges to connect. \nNASA\u2019s Juno \nhas observed \nsprites on Jupiter, \nindicating that sprites occur on other planets!", "summary": "\"Lightning
Explanation: \nIs there an angry \nSith \nusing \nforce lightning \nin the \nTatacoa Desert? \nThis is not science fiction, but a \nred sprite \nwith multiple \nstreamers! \nOrdinary \nlightning \noccurs when thundercloud particles collide, lose their electrons, and build up negative charge at the cloud bottom. The cloud\u2019s negative charge repels negative charge deeper into the Earth, leaving Earth\u2019s surface positively charged. The \nopposite charges attract, \nreaching towards each other and superheating the air into a white strike of \nplasma. \nRed sprites \nare \nmillisecond events triggered by \npositive cloud-to-ground \nlightning. They extend up into \nthe mesosphere where the air is too thin for \nthunder. \nTheir red glow comes from heated \nmolecular nitrogen. \nThere are \nseveral potential causes \nfor red sprites, including that the preceding \npositive lightning exposes the negatively charged cloud core \nto the positively charged upper atmosphere, allowing those charges to connect. \nNASA\u2019s Juno \nhas observed \nsprites on Jupiter, \nindicating that sprites occur on other planets!", "image": null, "banner_image": null, "date_published": "2026-07-15T03:00:00Z", "date_modified": "2026-07-15T03:00:00Z", "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/ap260714.html", "url": "https://apod.nasa.gov/apod/ap260714.html", "external_url": null, "title": "Double Lobed Asteroid Torifune", "content_text": "", "content_html": "\"A
Explanation: \nWhy is this asteroid a double? \n\nEarlier this month the \nJapanese \nrobotic spacecraft Hayabusa2 shot past asteroid \n98943 Torifune and captured \npictures.\n\nAlthough previous observations from \ndistant Earth indicated that Torifune was oblong, \nHayabusa2 found that \nTorifune actually has two joined lobes. \n\nWith a length of about four \nsoccer fields, this \nspace rock frequently \ncomes near the \nEarth as it orbits the \nSun, \nalthough it is not a threat. \n\nBesides the two lobes, \nTorifune shows \nmany large boulders, \nbut, surprisingly, \nno obvious craters, \nlikely because its surface is a \npile of rubble. \n\nLike asteroid Arrokoth,\n it appears that each lobe formed separately before colliding and becoming \nstuck together. \n\nHayabusa2 famously encountered \nasteroid Ryugu in 2018, \nand now heads for an encounter in 2031 with \n1998 KY26, a smaller asteroid that \nrotates unusually fast and might have reservoirs of ice.", "summary": "\"A
Explanation: \nWhy is this asteroid a double? \n\nEarlier this month the \nJapanese \nrobotic spacecraft Hayabusa2 shot past asteroid \n98943 Torifune and captured \npictures.\n\nAlthough previous observations from \ndistant Earth indicated that Torifune was oblong, \nHayabusa2 found that \nTorifune actually has two joined lobes. \n\nWith a length of about four \nsoccer fields, this \nspace rock frequently \ncomes near the \nEarth as it orbits the \nSun, \nalthough it is not a threat. \n\nBesides the two lobes, \nTorifune shows \nmany large boulders, \nbut, surprisingly, \nno obvious craters, \nlikely because its surface is a \npile of rubble. \n\nLike asteroid Arrokoth,\n it appears that each lobe formed separately before colliding and becoming \nstuck together. \n\nHayabusa2 famously encountered \nasteroid Ryugu in 2018, \nand now heads for an encounter in 2031 with \n1998 KY26, a smaller asteroid that \nrotates unusually fast and might have reservoirs of ice.", "image": null, "banner_image": null, "date_published": "2026-07-14T03:00:00Z", "date_modified": "2026-07-14T03:00:00Z", "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/ap260712.html", "url": "https://apod.nasa.gov/apod/ap260712.html", "external_url": null, "title": "Galaxy NGC 474: Shells and Star Streams", "content_text": "", "content_html": "\"A
Explanation: \nWhat's happening to galaxy \nNGC 474? \n\nThe multiple layers of emission appear strangely complex given the relatively featureless appearance of the \nelliptical galaxy in less deep images. \n\nThe cause of the \nshells is a topic of research, but they\nare possibly \ntidal tails related to debris left over from absorbing numerous small galaxies in the past billion years. \n\nAlternatively, the shells may be like ripples in a pond, where the ongoing collision with the spiral galaxy just to the right of \nNGC 474 is causing \ndensity waves \nto ripple through the galactic giant. \n\nRegardless of the actual cause, the featured image dramatically highlights the increasing evidence that the halos of some elliptical \ngalaxies are surprisingly complicated. \n\nSimilarly, the halo of our own \nMilky Way Galaxy \nis one example of such \nunexpected intricacies. \n\nNGC 474 spans about 250,000 \nlight years and lies about \n100 million light years distant toward the constellation of the Fish \n(Pisces).", "summary": "\"A
Explanation: \nWhat's happening to galaxy \nNGC 474? \n\nThe multiple layers of emission appear strangely complex given the relatively featureless appearance of the \nelliptical galaxy in less deep images. \n\nThe cause of the \nshells is a topic of research, but they\nare possibly \ntidal tails related to debris left over from absorbing numerous small galaxies in the past billion years. \n\nAlternatively, the shells may be like ripples in a pond, where the ongoing collision with the spiral galaxy just to the right of \nNGC 474 is causing \ndensity waves \nto ripple through the galactic giant. \n\nRegardless of the actual cause, the featured image dramatically highlights the increasing evidence that the halos of some elliptical \ngalaxies are surprisingly complicated. \n\nSimilarly, the halo of our own \nMilky Way Galaxy \nis one example of such \nunexpected intricacies. \n\nNGC 474 spans about 250,000 \nlight years and lies about \n100 million light years distant toward the constellation of the Fish \n(Pisces).", "image": null, "banner_image": null, "date_published": "2026-07-12T03:00:00Z", "date_modified": "2026-07-12T03:00:00Z", "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 "]}]}