Newly-discovered exoplanet twice the size of Earth could have water

NASA
K2-288Bb

The Kepler space telescope ran out of fuel late October, as expected, ending its nine and a half year mission of hunting for planets outside our solar system.

NASA's Transiting Exoplanet Survey Satellite, TESS, has discovered a third small planet outside our solar system, scientists announced this week at the annual American Astronomical Society meeting in Seattle.

It takes HD 21749b 36 days to orbit around its star, which is almost as bright as the Sun. It has also discovered a super-Earth and a rocky world, making three exoplanet discoveries in the first three months since it began surveying the sky in July.

The new planet's surface reaches about 300℉, which, according to the MIT Kavli Institute for Astrophysics and Space Research, is "relatively cool", considering the proximity to its star, which is nearly as bright as our Sun.

"It's the coolest small planet that we know of around a star this bright", Dr Dragomir said. It's very hard to find small planets that orbit farther from their stars, and are therefore cooler.

"We learned from Kepler that there are more planets than stars in our sky, and now TESS will open our eyes to the variety of planets around some of the closest stars", Paul Hertz, the director of NASA's astrophysics division, said in March 2018. Few planets that orbit close to their stars are more than 1.5 times as large as Earth, yet K2-288Bb is estimated to be roughly 1.9 times the size of our planet.

Bruce Arians, former Jets coach Todd Bowles reuniting in Tampa Bay
Licht was vice president of player personnel during Arians' tenure as head coach with the Cardinals. Arians is 66 years old, and retired from the Arizona Cardinals following the 2017 season.


It could either be rocky like our home planet or gas-rich like Neptune.

There is also evidence that a second planet could exist in this system with a 7.8-day orbit - which could be the first Earth-size planet dicovered by TESS.

The exoplanet, known as K2-288Bb, is about twice the size of Earth and orbits within the habitable zone of its star, meaning liquid water may exist on its surface.

The new planet is named HD 21749b.

TESS will look for exoplanets using the transit method, observing slight dips in the brightness of stars as planets pass in front of them.

Kepler found a planet that orbits two stars, known as a binary star system, in 2011.

Woman dies after being found unconscious in clothing donation bin
Back in November 2018, a 32-year-old man was discovered in a similar position in Cambridge, Ontario. "It becomes a human trap". The municipality of West Vancouver has already sealed a number of bins as they look for safer alternatives to the containers.


TESS will continue to sweep the southern hemisphere until mid-2019, at which point it will turn its cameras to the Northern Hemisphere and start another observation phase.

Each of the planets, which orbit a dwarf star just 39 million light years, likely holds water at its surface. The exoplanet lies in the stellar system K2-288, which has two dim, cool stars. "We don't know how that could form". They determined that they should be able to find the signal again, in TESS's "sector 3" data - which they succeeded in doing. "But we re-extracted the data and zoomed in to look more carefully, and found what looked like the end of a transit".

They also used data from the Planet Finder Spectrograph, an instrument installed on the Magellan Telescope in Chile, to further validate their findings and constrain the planet's mass and orbit.

"There was quite some detective work involved, and the right people were there at the right time", Dragomir said.

Scientists are already working on followup observations for more than 280 planet candidates that TESS has found.

The discoveries of a new planet and several supernovae are exciting enough and what's to come should give us even more information about the phenomena already discovered.

Venom 2 Confirmed, New Director May Be Hired
Sony is moving ahead with its Venom sequel, as was expected considering the film's box office success. Sounds like there's more juice left in Venom yet.


He continued: "Re-orienting Kepler relative to the Sun caused minuscule changes in the shape of the telescope and the temperature of the electronics, which inevitably affected Kepler' sensitive measures in the first days of each campaign".

Related news:

Hot News

isis-killer-beheading-video-story-top Virat Kohli and Anushka Sharma enjoy some romantic time in Australia
Jan 09, 2019 - 09:45
The couple's loved-up posts in the New Year had gone viral while raising the bar for romantic affection for couples everywhere. On the work front, Anushka was last seen in Aanand L Rai directorial Zero alongside Shah Rukh Khan and Katrina Kaif.

isis-killer-beheading-video-story-top Rockets’ Clint Capela says James Harden inspired his rebounding run
Jan 09, 2019 - 09:29
In San Antonio, it was the return of Kawhi Leonard , who led the team to National Basketball Association championship in 2014. Houston looked to be spiralling out of control at the start of the season having won just one of their opening six games.

isis-killer-beheading-video-story-top 'Suspicious packages' found at consulates in Australia
Jan 09, 2019 - 09:13
The foreign consulates are based mainly in St Kilda Road and the city centre. "All our staff are safe and accounted for". A major operation is underway after packages were delivered to at least 10 worldwide consulates across Melbourne .

isis-killer-beheading-video-story-top California utility assessing finances amid wildfire links
Jan 09, 2019 - 09:10
PG&E said it is reviewing structural options to implement necessary changes while meeting customer and operational needs. The utility is considering the move for some or all of its businesses, Reuters reported on Friday.

isis-killer-beheading-video-story-top Dabo Swinney of Clemson Tigers cedes dynasty label to Alabama Crimson Tide
Jan 09, 2019 - 08:58
"I've only been here for a year", Lawrence said in a news conference Tuesday. Saban is now 6-2 in national title games, with both losses coming to Clemson.

isis-killer-beheading-video-story-top Oil rises to $58.53; lifted by OPEC cuts, steadying stock market
Jan 09, 2019 - 08:40
The API was also said to report that USA crude inventories fell by 6.13 MMbbl last week. Oil futures have gained more than 7 percent since last Monday.

isis-killer-beheading-video-story-top Manafort allegedly shared 2016 polling with associate linked to Russian intelligence
Jan 09, 2019 - 08:25
The latest allegations further detail how Manafort's work on the campaign intersected with his past global work with Kilimnik. They said he began talking with investigators before dawn, answering questions for "many hours" and "usually the entire day".

isis-killer-beheading-video-story-top Saudi woman Rahaf al-Qunun: Australia would 'consider' asylum bid
Jan 09, 2019 - 07:58
The young woman, Rahaf Mohammed al-Qunun, had also tweeted: "I had been threatened to be killed before and they aren't afraid to threaten me in public".

isis-killer-beheading-video-story-top Uber driver pleads guilty to shooting dead six people in MI
Jan 09, 2019 - 05:11
There was no sentencing agreements that hinged on Dalton's guilty pleas. Four women were killed outside a Cracker Barrel restaurant. Dalton's motive remains a mystery.

isis-killer-beheading-video-story-top U.S. government shutdown: Trump to make border wall speech
Jan 09, 2019 - 04:16
Curbing illegal immigration was one of the main campaign promises Mr Trump made when he ran for president. CBS said Trump will speak for no longer than eight minutes, The Hill reported .

isis-killer-beheading-video-story-top Sears rejects bailout bid, hundreds of stores likely to close
Jan 09, 2019 - 02:03
Drain said that Sears will consider Lampert's offer versus a potential liquidation during a bankruptcy auction on January 14. The deal was reached after days of "virtually round-the-clock negotiations", Sears attorney Ray Schrock told the court.

isis-killer-beheading-video-story-top Samsung posts Q4 guidance, profit goes down 38%
Jan 09, 2019 - 00:14
DRAMeXchange anticipates memory chip prices to fall 10 percent on an average in the first quarter. This is the first time they have commented on an earnings report since 2014.

isis-killer-beheading-video-story-top LG unveils incredible 65-inch "roll-away" 4K TV
Jan 09, 2019 - 00:04
This comes a year after LG added Google Assistant to its flagship TVs, which remains available on 2019 models. For convenient playback and mirroring, LG will be adding support for AirPlay 2 by Apple.

isis-killer-beheading-video-story-top CES starts today and that means a major tech makeover
Jan 08, 2019 - 23:52
That's especially true for Monday, Jan. 6: "Press day" is comprised of at least a dozen press conferences, starting at 8 a.m. The big story this year is just how much tech companies are partnering with each other.

isis-killer-beheading-video-story-top Broncos narrow head-coaching search to two candidates
Jan 08, 2019 - 22:56
He spoke with the Broncos this morning, and Denver pushed its return flight from noon Colorado time to 4:30 p.m. The Browns on Saturday interviewed Patriots linebackers coach Brian Flores for the team's head coach opening.