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Read this article and SUMMARIZE THE ARTICLE IN AT LEAST 10 SENTENCES!!! DO NOT INCLUDE DIALOGUE

Read this article and SUMMARIZE THE ARTICLE IN AT LEAST 10 SENTENCES!!! DO NOT INCLUDE DIALOGUE

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
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Read this article and SUMMARIZE THE ARTICLE IN AT LEAST 10 SENTENCES!!! DO NOT INCLUDE DIALOGUES
11:30 ® O M M M l 53% A newly discovered exoplanet is really making astronomers prove their mettle. Planet GJ 367b is smaller than Earth, denser than iron and hot enough to melt, researchers report in the Dec. 3 Science. "We think the surface of this exoplanet could be molten," says astronomer Kristine Wei Fun Lam of the Institute of Planetary Research at the German Aerospace Center in Berlin. Signals of the planet were first spotted in data from NASA's TESS telescope in 2019. The small world swung around its host star every 7.7 hours. Using data from TESS and the ground-based HARPS spectrograph at the European Southern Observatory in Chile, Lam and her colleagues measured the planet's radius and mass. GJ 367b clocked in at about 0.72 times Earth's radius and 0.55 times its mass. That makes it the first ultrashort-period planet – a class of worlds with years shorter than one Earth day and with mysterious origins – known to be smaller and lighter than Earth. Using those measurements, the team then calculated the planet's density: about 8.1 grams per cubic centimeter, or slightly denser than iron. A computer analysis of the planet's interior structure suggests that 86 percent of it could comprise an iron core, with only a sliver of rock left on top. II
Transcribed Image Text:11:30 ® O M M M l 53% A newly discovered exoplanet is really making astronomers prove their mettle. Planet GJ 367b is smaller than Earth, denser than iron and hot enough to melt, researchers report in the Dec. 3 Science. "We think the surface of this exoplanet could be molten," says astronomer Kristine Wei Fun Lam of the Institute of Planetary Research at the German Aerospace Center in Berlin. Signals of the planet were first spotted in data from NASA's TESS telescope in 2019. The small world swung around its host star every 7.7 hours. Using data from TESS and the ground-based HARPS spectrograph at the European Southern Observatory in Chile, Lam and her colleagues measured the planet's radius and mass. GJ 367b clocked in at about 0.72 times Earth's radius and 0.55 times its mass. That makes it the first ultrashort-period planet – a class of worlds with years shorter than one Earth day and with mysterious origins – known to be smaller and lighter than Earth. Using those measurements, the team then calculated the planet's density: about 8.1 grams per cubic centimeter, or slightly denser than iron. A computer analysis of the planet's interior structure suggests that 86 percent of it could comprise an iron core, with only a sliver of rock left on top. II
11:31 O 3 all 53% Mercury has a similarly large core, Lam notes (SN: 4/22/19). Scientists think that's a result of a giant impact with another planet that stripped away most of its outer layers. GJ 367b could have formed after a similar collision. It could also have once been a gaseous planet whose atmosphere was blasted off by radiation from its star (SN: 7/1/20). Whatever its origins, GJ 367b is so close to its star that it's almost certainly covered in melted metallic lava now. "At 1400° Celsius, I don't think it would be very nice to stand on it," Lam says. Questions or comments on this article? E-mail us at feedback@sciencenews.org CITATIONS K.W.F. Lam et al. GJ 367b: A dense, ultrashort-period sub-Earth planet transiting a nearby red dwarf star. Science. Vol. 374, December 3, 2021, p. 1271. Doi:10.1126/science.aay3253. About Lisa Grossman Lisa Grossman is the astronomy writer. She has a degree in astronomy from Cornell University and a graduate certificate in science writing from University of California, Santa Cruz. She lives near Boston. OUR SPONSOR REGENERON SCIENCE The Sociotvis II
Transcribed Image Text:11:31 O 3 all 53% Mercury has a similarly large core, Lam notes (SN: 4/22/19). Scientists think that's a result of a giant impact with another planet that stripped away most of its outer layers. GJ 367b could have formed after a similar collision. It could also have once been a gaseous planet whose atmosphere was blasted off by radiation from its star (SN: 7/1/20). Whatever its origins, GJ 367b is so close to its star that it's almost certainly covered in melted metallic lava now. "At 1400° Celsius, I don't think it would be very nice to stand on it," Lam says. Questions or comments on this article? E-mail us at feedback@sciencenews.org CITATIONS K.W.F. Lam et al. GJ 367b: A dense, ultrashort-period sub-Earth planet transiting a nearby red dwarf star. Science. Vol. 374, December 3, 2021, p. 1271. Doi:10.1126/science.aay3253. About Lisa Grossman Lisa Grossman is the astronomy writer. She has a degree in astronomy from Cornell University and a graduate certificate in science writing from University of California, Santa Cruz. She lives near Boston. OUR SPONSOR REGENERON SCIENCE The Sociotvis II
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