KELT-9b: Astronomers Discover Hottest Giant Planet

Astronomers have discovered the hottest planet ever known with a dayside temperature more than 4,300 Degrees Celsius. The planet is called KELT-9b and is hotter than the most of the stars. Scott Gaudi a Professor at the Ohio State University in Columbus who led a study said that the discovered planet is the hottest gas giant planet that has ever been discovered. KELT-9b is 2.8 times more massive than Jupiter, but only half as dense.

It is nowhere close to habitable, but Gaudi said there is a good reason to study worlds that are unlivable in the extreme. "As has been highlighted by the recent discoveries from the MEarth collaboration, the planet around Proxima Centauri, and the astonishing system discovered around TRAPPIST-1, the astronomical community is clearly focused on finding Earthlike planets around small, cooler stars like our sun," Gaudi said.

"They are easy targets and there's a lot that can be learned about potentially habitable planets orbiting very low-mass stars in general. On the other hand, because KELT-9b's host star is bigger and hotter than the Sun, it complements those efforts and provides a kind of touchstone for understanding how planetary systems form around hot, massive stars," he explained. Because the planet is tidally locked to its star -- as the moon is to Earth -- one side of the planet is always facing toward the star, and one side is in perpetual darkness.

Molecules such as water, carbon dioxide and methane cannot form on the dayside because it is bombarded by too much ultraviolet radiation. The properties of the nightside are still mysterious -- molecules may be able to form there, but probably only temporarily.

"It's a planet by any of the typical definitions of mass, but its atmosphere is almost certainly unlike any other planet we've ever seen just because of the temperature of its dayside," said Gaudi, worked on this study while on sabbatical at NASA's Jet Propulsion Laboratory, Pasadena, California.

Its star, called KELT-9, is even hotter -- in fact, it is probably unravelling the planet through evaporation. It is only 300 million years old, which is young in star time. It is more than twice as large, and nearly twice as hot, as our sun. Given that the planet's atmosphere is constantly blasted with high levels of ultraviolet radiation, the planet may even be shedding a tail of evaporated planetary material like a comet. "KELT-9 radiates so much ultraviolet radiation that it may completely evaporate the planet," said Keivan Stassun, Professor at Vanderbilt University, Nashville, Tennessee. The KELT-9b planet was found using the Kilodegree Extremely Little Telescope, or KELT.

vialerg wiki graviditet.site vialerg pollen
felodipin und betablocker doseringholdbarhed.site felodipin quran
methotrexat eksem enyfodtkob.site methotrexat cipla
amantadin nebenwirkungen amantadin bipacksedel amantadin stada
domperidon champagne domperidon al domperidon fk
duloxetin tinnitus duloxetin neuropathy duloxetin erfaringer
More News
AP TET Results 2024 Live Updates: How to check my score once released?
AP TET 2024 Results Live Updates: When announced, the AP TET results and scorecards can be downloaded from the official website -- aptet.apcfss.in.Manabadi AP TET Results 2024 Live Updates: The Department of School Education, Andhra Pradesh will anno...
IIT Delhi invites applications for Project Management online certificate course
Interested students can apply for this course at the official website of IIT Delhi -- iitdelhi.emeritus.org.The Indian Institute of Technology, Delhi (IITD) on March 14 launched applications for an online certificate programme of Project Management. ...
GATE 2024 Result: Date, websites to check GATE scores
GATE 2024 Result Date, Time: Candidates who took the GATE 2024 exam can check their scores at the official website -- gate2024.iisc.ac.in.GATE 2024 Result Date, Time: The GATE 2024 result will be announced on March 16 by the IISc Bangalore. Candidate...
AP TET 2024 result: Where can I check my result?
AP TET 2024: Candidates who appeared for the exam will be able to download their scorecard from the official website -- aptet.apcfss.in. AP TET 2024 Result Link: The Department of School Education, Andhra Pradesh will today release the results for th...
IIM Lucknow to launch angel investing certification programme
The two-day residential programme at the Indian Institute of Management (IIM) Lucknow EIC (Noida) campus will be held on April 6 and 7, 2024.Startup accelerator program India Accelerator Wednesday announced a partnership with the IIM-Lucknow Enterpri...
NEET MDS 2024 admit cards to release on March 15
NEET MDS 2024 Hall Ticket: Registered students will be able to download their admit cards from the official website -- natboard.edu.in.NEET MDS 2024: The National Board of Examination in Medical Science (NBEMS) will tomorrow (March 15) release the ad...
AP EAMCET (AP EAPCET) 2024 registration begins at cets.apsche.ap.gov.in
Interested candidates can register for AP EAMCET 2024 through the official website – cets.apsche.ap.gov.in.Andhra Pradesh State Council of Higher Education (APSCHE) today started the registration process for the Andhra Pradesh Engineering, Agri...
Bihar Board Results 2024 Soon: Students from CBSE, other states switching to BSEB
Bihar Board Results 2024: The number of students shifting from CBSE to BSEB has been continuously increasing by nearly 20,000 since 2018.Bihar Board 12th Result 2024, BSEB Inter Result: The Bihar School Examination Board (BSEB) last year revealed tha...
JEECUP 2024: Uttar Pradesh UPJEE polytechnic application extended; exam deferred
UPJEE JEECUP 2024: Candidates yet to register for the exam will be able to fill the application form online at jeecup.admissions.nic.in.The Joint Entrance Examination Council Uttar Pradesh (JEECUP) extended the UP Joint Entrance Examination (Polytech...
AP EAMCET (AP EAPCET) 2024 registration begins
Interested candidates can register for AP EAMCET 2024 through the official website – cets.apsche.ap.gov.in.Andhra Pradesh State Council of Higher Education (APSCHE) today started the registration process for the Andhra Pradesh Engineering, Agri...