TESS Finds A New Planet In A Stellar Habitable Zone
TESS Finds A New Planet In A Stellar Habitable Zone
09 January, 2019, 10:26
NASA's planet-hunting telescope is making landmark discoveries at an astonishing pace and has now confirmed discovery of a third new planet and a handful of exploding stars in our "cosmic backyard". Those planets tear around their stars much more quickly than HD 21749b, completing orbits at 6.3 days and a meagre 11 hours. Citizen scientists using data from NASA's Kepler space telescope, discovered a planet roughly twice the size of Earth located within its star's habitable zone, the range of orbital distances where liquid water may exist on the planet's surface.
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.
"We know a lot about atmospheres of hot planets, but because it's very hard to find small planets that orbit farther from their stars, and are therefore cooler, we haven't been able to learn much about these smaller, cooler planets", she continued.
Calling the planet small is a bit misleading, the team says that HD 21749b is about three times the size of Earth placing it into the sub-Neptune category. But it is unlikely that the planet is rocky and therefore habitable; it's more likely made of gas, of a kind that is much more dense than the atmospheres of either Neptune or Uranus.
"We think this planet wouldn't be as gaseous as Neptune or Uranus, which are mostly hydrogen and really puffy".
"It could be a water planet or have some other type of substantial atmosphere."
Currently, the team is investigating a second planet in the system with a shorter 7.8-day orbit.
"It's a very exciting discovery due to how it was found, its temperate orbit and because planets of this size seem to be relatively uncommon", said Feinstein, who presented the discovery at the 233rd meeting of the American Astronomical Society in Seattle on Monday, Jan. 7.
When a planet passes in front of a star as viewed from Earth, the event is called a "transit".
The newfound planet K2-288Bb, illustrated here, is slightly smaller than Neptune. The satellite will spend the first year surveying the sky in the Southern Hemisphere, before swiveling around to take in the Northern Hemisphere sky. Possible planets can be spotted by studying dips in light when the planet moves before its star. The exoplanet lies in the stellar system K2-288, which has two dim, cool stars.
NASA astrophysicist Geert Barents said the Sun affected the craft which hampered the first days of its mission - possibly dampening its ability to locate new planets. "But we had this one transit, and knew something was there".
It turned out that they did not analyze all of the data.
"We've confirmed three planets so far, and there are so many more that are just waiting for telescope and people time to be confirmed", Dragomir said. "TESS found as many in its first month". "But we were lucky and we caught the signals, and they were really clear".
The Trappist-1 star system, which hosts a record seven Earth-like planets, was one of the biggest discoveries of 2017.
So the reprocessed, "cleaned-up" light curves were uploaded through the Exoplanet Explorers project on online platform Zooniverse, and the public was invited to "go forth and find us planets", Feinstein said. The findings from TESS are meant to provide a guide for more detailed observations by space telescopes yet to be built, including the European Space Agency's CHEOPS planet-hunting probe and NASA's James Webb Space Telescope.
Saudi Arabia's human rights record has been under heavy scrutiny since the murder of journalist Jamal Khashoggi late a year ago . She used a Canadian tourist's phone to send a message, a video of which was posted to Twitter, saying her family would kill her.
According to Toronto police, a 35-year-old woman was found stuck inside a downtown clothing donation bin early Tuesday morning. Police say the woman appears to have died after a medical episode, so the exact cause of death is not yet known.
The latest allegations further detail how Manafort's work on the campaign intersected with his past global work with Kilimnik. While the redactions don't specifically mention the Trump campaign by name, they do mention the "2016 presidential campaign".
The versatile guard made the first triple-double of his career. "We didn't do a good job in transition, defence", Leonard said. Gay played 23 minutes to Popovich's surprise, who thought the 13-year veteran would miss the game with a sprained left wrist.
We will see when the time comes, but as of now, we have made our stand clear that we are not supporting the Bill". The AASU declined to be part of the committee until the Citizenship (Amendment) Bill 2016 is scrapped.
Victoria Police said they are aware of the suspicious packages, but do not believe the public should be concerned. Two days before, a suspicious package containing white powder was found at the Argentine consulate in Sydney .
Russian authorities took a different course and later accused him of having participated in the fraud scheme himself. Officials have confirmed Ms Veselnitskaya is now wanted by the US Attorney's Office in NY .
It protects the right of local & state govts that decide to no longer do business with those who boycott #Israel . Rashida Tlaib , who in criticizing the legislation was herself accused of invoking an anti-Semitic slur.
Apparently, Nasukawa was flattered that McGregor wanted to fight him. "Yours sincerely The champ champ", he Tweeted. Yet another superfighter is interested in facing Tenshin Nasukawa, 20, of Tokyo, Japan.
Speaking without notes, she refined her stump speech and took audience questions with the enthusiasm of a social studies teacher. Asked about the DNA test she took previous year , Warren said she understands the difference between citizenship and ancestry.
Paine, however, walked away with positives as well from the series ahead of the two-Test series against Sri Lanka at home. Meanwhile, Kumble had also said that this was India's biggest chance to beat Australia in their own den.
Local leader of German far-right party attacked, wounded
The AfD's entry into parliament in September 2017 with 13 percent of the vote unleashed a political natural disaster in Germany. The mayor was known for voluntarily taking in more asylum-seekers than the small town was obliged to do so by authorities.
Intel's 9th Gen Core processors headed to laptops in Q2 2019
Lakefield is a new 10nm client platform from Intel that features a hybrid CPU leveraging Intel's Foveros 3D packaging technology. In October, Intel launched the first set of the 9th Gen Core desktop processors , including the Intel Core i9-9900K processor.
Resident Evil 2 demo coming Thursday, on a timer
The Resident Evil 2 Remake demo is a limited time offering but features an exclusive trailer for those who complete it. Interestingly, completing the demo also reveals a new cinematic trailer , but you have to make it in time.