Bookmark Kaumudi Online  Bookmark this site  Editor@Kaumudi  |  Marketing  Print Advt rates  |  Calendar 2012        Go!    
 
 
September 24, Sunday 2017 3:13 AM       

       HEADLINES: Thomas Chandy issue: Pinarayi maintains silence                                              Land filling was only done on legally owned land: Thomas Chandy                                              CM must demand resignation of minister Thomas Chandy: Chennithala                                              Some people think it is good to get along with Thomas Chandy: VS                                              Manju Warrier supports ‘Ramaleela’                                              Pak shells border posts, hamlets; BSF jawans among 7 injured                                              Our priority is development, not vote bank politics: Modi                                              Falahari Maharaj arrested on charge of rape                                              Scribe, mother found dead in Mohali                                              Pak anti-graft body freezes accounts of Sharif, family                                              China imposes limit on oil supply to N Korea                                              Iran test fires ballistic missile 'Khorramshahr'                                              Pak test fires anti-ship missile in North Arabian Sea                                              Bangladesh says Rohingya refugee influx over                                              Back your game: Tendulkar's advice to Rahane                                              Desperate Aussies seeks Finch for 3rd ODI                                              Japan Open: Pranaav Chopra-Sikki Reddy bow out in semis                                              Kaumudi Facebook
       SCI&TECH Next Article: Wireless, battery-less pacemaker developed  
       Hottest known planet in universe discovered
 
         Posted on :17:55:48 Jun 7, 2017
   
A A
       Last edited on:17:55:48 Jun 7, 2017
         Tags: Hottest known planet, universe
 

WASHINGTON: Scientists have discovered the hottest known planet located 650 light years from Earth, which is warmer than most stars in the universe and sports a giant, glowing gas tail like a comet.

The Jupiter-like planet orbits a massive star KELT-9 every day and a half, researchers said.

With a day-side temperature peaking at 4,326 degree Celsius the newly discovered exoplanet, designated KELT-9b, is hotter than most stars and only 926 degree Celsius cooler than our Sun.

The ultraviolet radiation from the star it orbits is so brutal that the planet may be evaporating away under the intense glare, producing a glowing gas tail.

The gas giant 2.8 times more massive than Jupiter but only half as dense, because the extreme radiation from its host star has caused its atmosphere to puff up like a balloon.

Since it is tidally locked to its star - as the moon is to Earth - the day side of the planet is perpetually bombarded by stellar radiation and, as a result, it is so hot that molecules such as water, carbon dioxide and methane can not form there.

"It's a planet by any of the typical definitions based on mass, but its atmosphere is almost certainly unlike any other planet we've ever seen just because of the temperature of its day side," said Scott Gaudi, professor at The Ohio State University in the US and lead author of the study published in the journal Nature.

The reason the exoplanet is so hot is because the star it orbits is more than twice as large and nearly twice as hot as our Sun.

"KELT-9 radiates so much ultraviolet radiation that it may completely evaporate the planet. Or, if gas giant planets like KELT-9b possess solid rocky cores as some theories suggest, the planet may be boiled down to a barren rock, like Mercury," said Keivan Stassun, professor at Vanderbilt University in the US.

On the other hand, the planet's orbit is extremely close to the star so if the star begins to expand it will engulf it.

"KELT-9 will swell to become a red giant star in about a billion years," said Stassun.

"The long-term prospects for life, or real estate for that matter, on KELT-9b are not looking good," he said.

"We were pretty lucky to catch the planet while its orbit transits the face of the star," said Karen Collins, a post- doctoral fellow at Vanderbilt.

"Because of its extremely short period, near-polar orbit and the fact that its host star is oblate, rather than spherical, we calculate that orbital precession will carry the planet out of view in about 150 years, and it won't reappear for roughly three and a half millennia," said Collins.

A A
       SCI&TECH
Next Article: Wireless, battery-less pacemaker developed
 
 
SCI&TECH HEADLINES
Astrophysicists make music from Saturn's moons, rings  
Rooter includes Kabbadi, F1 under one roof  
Orbiting supermassive black holes discovered for first time  
Theweightmonitor.com launches mobile app for easier access to one-stop weight management platform  
New drug to treat blood cancer developed  
Threat of asteroid impact looming over Earth: experts  
Hottest known planet in universe discovered  
Wireless, battery-less pacemaker developed  
'Manned missions to Moon, Mars may face medical emergencies'  
Ransomware threat: Centre activates mechanism to prevent ‘Wannacry’ cyber attack  
2 lakh hit by 'unprecedented' cyberhack in 150 nations:Europol  
foodpanda revamps mobile app; provides more options  
ixigo launches trains app for Apple iOS users  
Virtual humans may help doctors learn empathy: study  
Gamers, here are five games to watch out for  
Yahoo India homepage gets brand new look  
Spacecraft flies between Saturn and rings in historic 1st  
Google targets 'fake news,' offensive search suggestions  
Offensive WhatsApp posts can land group admin in jail  
Facebook for 'everyone' and not just high end: Zuckerberg  
Google Earth re-invented for new era  
NASA images show how India looks from space at night  
Signs of life detected below world's deepest point  
'iPhones assembly in Bengaluru by Apple in less than a month'  
Five astronauts assigned to future ISS mission: NASA  
 
Do you think protest against 'Ramaleela' is justified?
Yes
 
No
 
No Opinion
 
 
 
Home Kerala India World Business Sports Sci&Tech Education Automobile CityNews Movies Environment Letters 
© Copyright keralakaumudi Online 2011  |  Reproduction in whole or in part without written permission is prohibited.
Head Office Address: Kaumudi Buildings, Pettah P.O, Trivandrum - 695024, India.
Online queries talk to Deepu Sasidharan, + 91 98472 38959 or Email deepu[at]kaumudi.com
Customer Service -Advertisement Disclaimer Statement   |  Copyright Policy