New exoplanet found 200 light years from Earth could have liquid water

Share
New exoplanet found 200 light years from Earth could have liquid water

According to the team from the Tokyo Institute of Technology's Department of Earth and Planetary Scientists, the 15 exoplanets are orbiting red dwarf stars.

Common, relatively cool and potentially life-supporting, red dwarf stars are of particular interest to astronomers hunting down distant worlds.

According to simulations, it's even possible that the planet, known as K2-155d, might have liquid water on its surface, although the scientists involved in the study are quick to note that this is purely guesswork and that there's no indication yet as to what type of materials this world might be made of. Three super-Earths were found to be orbiting that bright red dwarf, but it was the outermost planet, K2-155d, that stood out as possibly being within K2-155's habitable zone.

The findings on K2-155d are based on data from the NASA Kepler spacecraft's second mission, K2, and follow-up observations from ground-based telescopes in Hawaii and Spain, among other places. The researchers will need a more precise estimate of the radius and temperature of K2-155, likely using interferometric techniques, to conclude definitively whether K2-155d is habitable. The stars these planets are orbiting are called red dwarfs.

Given that red dwarfs emit less light, the habitable zones covered by those stars are much smaller compared to the solar-type star that Earth is orbiting. Hirano also points out that red dwarf stars are just beginning to be investigated and are "exciting" targets for exoplanet research.

This is unedited, unformatted feed from the Press Trust of India wire.

As scientists noted, they were interested in celestial bodies revolving around stars that are not like our Sun and red dwarfs, which are small and boring stars with a bigger lifespan. It is expected that more planets will be discovered.

Over the past two years, astronomers have discovered several star systems and exoplanets, such as Proxima B and the seven small planets revolving the around the TRAPPIST-1 star.

The planets were discovered using the transition method where planets give their presence away when they pass in front of a star, causing it to block out light which reaches Earth.

The studies were conducted as part of the KESPRINT collaboration, a group formed by the merger of KEST (Kepler Exoplanet Science Team) and ESPRINT (Equipo de Seguimiento de Planetas Rocosos Intepretando sus Transitos) in 2016. "TESS should find many candidate planets around bright stars closer to Earth", notes Teruyuki Hirano. Planets like Jupiter and Saturn are believed to have grown so large because their atmosphere had room to expand, and as such, it makes sense that a red dwarf might not provide the adequate environment for this process to take place. There seems to be a "gap" in the number of exoplanets with a radius between about 1.5 and 2 times that of Earth.

Nasa is planning on launching its Transiting Exoplanet Survey Satellite (TESS) in April this year, and it could open up new discoveries like this one. "This will greatly facilitate tracking observations, including the study of planetary atmospheres and determination of the precise orbit of planets".

Share

Advertisement

Related Posts

Former aide to Cuomo convicted in bribery case
Percoco was one of four defendants in the case. Attorney Geoffrey Berman said in a statement. Cuomo has not been accused of wrongdoing.

ICE Spokesman Quits, Bashes Trump Administration On Immigration Raids
The Oakland mayor said in response to the former spokesman speaking out, "I commend Mr. Schwab for speaking the truth while under intense pressure to lie".

Russian exile and Putin critic found dead in Britain
Mr Berezovsky was himself found dead on a bathroom floor at his home in southern England in 2013 with a scarf around his neck. His death was not treated as suspicious, but his friends were not convinced and a coroner later recorded an open verdict.

Bharti Airtel set to raise Rs 16.5k cr
In its exercise to reduce debt and take on the intense competition of Reliance Jio , Airtel is on a fundraising spree. Meanwhile, its rival Idea Cellular too raised funds to build a war chest for the battle in the telecom sector.

Labour investigating another sexual assault complaint from separate party event
A lawmaker from the opposition center-right National Party, Judith Collins, criticized the decision not to involve the police. She "immediately" called Labour Party general secretary Andrew Kirton to alert him and asked him to contact the person.

Betting On Activision Blizzard, Inc. (NASDAQ:ATVI) ?
Strs Ohio stated it has 111,372 shares. (NASDAQ:ATVI) for 93,855 shares. ( NYSE:GS ), 13 have Buy rating, 1 Sell and 16 Hold. Out of 3 Wall Street analysts rating Emerge Energy Services, 2 give it "Buy", 0 "Sell" rating, while 1 recommend "Hold".

Charles Manson's remains will be given to grandson
Freeman said Manson's body will be cremated and a private service will be held, but he did give specifics. The AP says that Channels is a "pen pal who collected and sold Manson memorabilia".

OTA Slams USDA for Withdrawing Animal Welfare Regulations
The Organic Trade Association (OTA), which first filed suit against the USDA in the U.S. USDA is withdrawing the rule based on its current interpretation of 7 U.S.

Pacific Beach Rec Center's Spring Egg Hunt
To support the competition, Kinder has launched a Kinder Egg Hunt Kit for the convenience channel retailing at £9. The Warrensburg Parks and Recreation kicks off Easter weekend with three "EGG " cellent egg themed events.

Pa. bills would ban abortions based on Down syndrome
Abbott says the Governor believes health decisions should be made between a woman and her doctor, not politicians in Harrisburg. A pair of bills sitting before Pennsylvania's House and Senate right now could change the Abortion Control Act.

© 2015 ExpressNewsline. All Rights reserved.