\rThis work relied upon high-cadence observations from NASA’s Interface Region Imaging Spectrograph, or IRIS, and the Swedish 1-meter Solar Telescope in La Palma. Together, the spacecraft and telescope peer into the lower layers of the sun’s atmosphere, known as the interface region, where spicules form. The results of this NASA-funded study were published in Science on June 22, 2017 — a special time of the year for the IRIS mission, which celebrates its fourth anniversary in space on June 26.
Research: On the generation of solar spicules and Alfvénic waves.
Journal: Science, June 22, 2017.
Link to paper: http://science.sciencemag.org/content/356/6344/1269.full",
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Over a few hours observation of the northern pole area of the Sun in extreme ultraviolet light (Aug. 3, 2010), we can see a continual frenzy of spicules.", "width": 1823, "height": 528, "pixels": 962544 } }, { "id": 258133, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 851685, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a012600/a012604/GSFC_20170622_SDO_m12406_Spicules.en_US.vtt", "filename": "GSFC_20170622_SDO_m12406_Spicules.en_US.vtt", "media_type": "Captions", "alt_text": "Observations of spicules from NASA's Solar Dynamics Observatory, or SDO. 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This was the first CME observed by the Interface Region Imaging Spectrograph, or IRIS, which launched in June 2013 to peer into the lowest levels of the sun's atmosphere with better resolution than ever before. Watch the movie to see how a curtain of solar material erupts outward at speeds of 1.5 million miles per hour.IRIS must commit to pointing at certain areas of the sun at least a day in advance, so catching a CME in the act involves some educated guesses and a little bit of luck. \"We focus in on active regions to try to see a flare or a CME,\" said Bart De Pontieu, the IRIS science lead at Lockheed Martin Solar & Astrophysics Laboratory in Palo Alto, California. \"And then we wait and hope that we'll catch something. This is the first clear CME for IRIS so the team is very excited.\" The IRIS imagery focuses in on material of 30,000 Kelvin at the base, or foot points, of the CME. The line moving across the middle of the movie is the entrance slit for IRIS's spectrograph, an instrument that can split light into its many wavelengths – a technique that ultimately allows scientists to measure temperature, velocity and density of the solar material behind the slit. The field of view for this imagery is about five Earth's wide and about seven and a half Earth's tall. The IRIS Observatory was designed by and the mission is managed by Lockheed Martin Solar & Astrophysics Laboratory. NASA's Ames Research Center in Mountain View, California, provides mission operations and ground data systems. NASA's Goddard Space Flight Center in Greenbelt, Maryland, manages the Explorers Program for NASA's Science Mission Directorate in Washington, D.C. || ", "release_date": "2014-05-30T09:30:00-04:00", "update_date": "2023-05-03T13:50:51.809085-04:00", "main_image": { "id": 454904, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011500/a011556/IRIS720.jpg", "filename": "IRIS720.jpg", "media_type": "Image", "alt_text": "A coronal mass ejection burst off the side of the sun on May 9, 2014. The giant sheet of solar material erupting was the first CME seen by NASA's Interface Region Imaging Spectrograph, or IRIS. The field of view seen here is about five Earth's wide and about seven and a half Earth's tall.Watch this video on the NASAexplorer YouTube channel.For complete transcript, click here.", "width": 1280, "height": 720, "pixels": 921600 } }, { "id": 4061, "url": "https://svs.gsfc.nasa.gov/4061/", "page_type": "Visualization", "title": "Solar Close-ups with Hinode's Solar Optical Telescope", "description": "A collection of movies generated from the Solar Optical Telescope (SOT) of the JAXA/NASA Hinode mission. || ", "release_date": "2013-04-16T00:00:00-04:00", "update_date": "2025-01-05T22:20:46.010624-05:00", "main_image": { "id": 466967, "url": "https://svs.gsfc.nasa.gov/vis/a000000/a004000/a004061/LimbCaIIHline_20061109_stand.2Kx1K.00010.jpg", "filename": "LimbCaIIHline_20061109_stand.2Kx1K.00010.jpg", "media_type": "Image", "alt_text": "A view of the limb of the Sun, in the H-line of singly-ionized calcium. A sunspot is visible as are many spicules (the grass-like wavy things).", "width": 2048, "height": 1024, "pixels": 2097152 } } ], "products": [], "newer_versions": [], "older_versions": [], "alternate_versions": [] }