By measuring the heat coming from a planet almost 49 light-years away, astronomers were able to glean some information about the surface of the rocky world-a rare feat in exoplanet science.
Exoplanet LHS 3844b turned out to be a dead stone.
Scientists from the Harvard Center for Astrophysics used NASA's Transiting Exoplanet Satellite Survey (TESS) telescope to spot planet LTT 1445 A b and its three stars.
As expected, Spitzer's data shows that the planet's dark surface is probably covered in volcanic basalt or magma, or cooled volcanic material, likely from ancient volcano activity. "The planet also is the second closest discovered so far that "transits" its star - that is, the orbit of LTT 1445 AB is tilted at the correct angle to, from our vantage point, pass across the face of the star". The star-facing side of LHS 3844 b reaches temperatures of about 1,410 degrees Fahrenheit (770 degrees Celsius), while the nightside stays at about minus 459 degrees Fahrenheit (minus 273 degrees Celsius), as reported by Scientific American.
According to computer simulations, such a contrast in temperatures on LHS 3844 b means that the planet could only have an atmosphere of about one-tenth the pressure on Earth But in the environment of a red dwarf star, which pumps out high levels of ultraviolet radiation and frequent flares, such a thin atmosphere would nearly certainly be blown away, according to NASA. If LHS 3844b still has an atmosphere, that does not exceed the density of the Martian, which is extremely unexpected for a planet of this size. Though the parent star is cool, it is still comparatively much hotter than the planet, so making direct observation of LHS 3844b's dayside possible.
The team measured the temperature difference between the exoplanet's hot and cold sides and determined that there is an insignificant amount of heat being transferred between the two. But if an atmosphere were present, it would allow for the force of wind to carry hot air to the other side of the planet.
Virtika's David Lesh Survives Half Moon Bay Plane Crash
KTVU's Jana Katsuyama spoke with David Lesh, the pilot of the downed plane, who said he was flying his aircraft with a friend. Two people were on board a small plane when it went down in the waters off Half Moon Bay Harbor in California.
Dubbed LHS 3844b, the planet has no atmosphere but holds to key to understanding where scientists should be looking for signs on life beyond Earth.
Following this observation, Spitzer was able to provide details on the atmosphere of a terrestrial world orbiting an M dwarf, according to NASA.
The presence of an atmosphere on the Earth is the reason liquid water can exist on the surface, enabling life on the planet. On the other hand, the atmospheric pressure of Mars is now less than 1% of Earth's, and the oceans and rivers that once dotted the Red Planet's surface have disappeared.
"Now, with LHS 3844b, we have a terrestrial planet outside our solar system where for the first time we can determine observationally that an atmosphere is not present", explains Kriedberg. They're particularly violent in their youth, belching up a large number of flares, or bursts of radiation and particles that could strip away budding planetary atmospheres. And in this case, the planet is so close to the star that the stellar wind coming off it would probably do away with the atmosphere.
Exceptional yet common Red dwarves themselves aren't uncommon as the smallest and the coolest of the star categories.
She called Scooter Braun's purchase of the label a "worst case scenario" in a fiery letter posted to her Tumblr account. CBS News' Tracy Smith asked Swift about the possibility of re-recording her songs to gain control of her masters.
Tristan Scott Wix , of Florida, James Patrick Reardon, of OH , and Brandon Wagshol, of CT , are all facing a variety of charges. According to a statement by the Florida Department of Law Enforcement (FDLE), 26-year-old Richard D.
In an interview with New Zealand's Newshub , Mr Coffey said he felt "supported by my colleagues from across the house". Mr Coffey is the latest MP to bring his baby to parliament, following the example of politicians across the world.
Trail camera footage also captured eight panthers and one bobcat struggling with the condition with varying degrees of severity. The FWC said people should upload any footage they have of stumbling panthers via the URL MyFWC.com/PantherSightings .
That left Derevyanchenko to face the next leading contender in the IBF's rankings, which was Golovkin, who used to hold that belt. The contracts for the fight are scheduled to be signed on Wednesday after both sides negotiated for three weeks, reports ESPN.
Sehwag felt that selectors need to have good knowledge of the game to take hard decisions and Kumble was the ideal candidate. He is also deterred by the fact that he writes columns, appears on TV shows and other events now .
Del Monte Foods will close a corn-packing plant in north central IL , idling more than 600 full-time and seasonal employees. Layoffs to workers in Mendota will begin in October with the closure of the 431-acre facility on N. 43rd Rd.by June 2020.
National Space Council Urges Congress To Approve Space Force
Pence said setting up the command still needs congressional funding and authority, but he said he expects that to happen soon. The Pentagon will stand up a new combatant command before the end of the month, with the official launch of U.S.
New US rule on illegal migrants
DHS officials said in a briefing Tuesday that they have no immediate plans to increase the number of family detention beds. The Flores agreement has been into effect since 1997 but mostly applied to children who came to the country alone.
Amanda Anisimova pulls out of US Open after father's death
Anisimova has been out of action recently because of a back injury but was hoping to play the final grand slam of the year. We appreciate the outpouring of love and support during this hard time and ask that you respect our privacy.
Shelter dog lands lead role in ‘Lady and the Tramp’ remake
In the movie tramp the street dog, voiced by Justin Theroux, falls in love with a lady the pedigree pup, voiced by Tessa Thompson. In a Facebook post, HALO Animal Rescue said: "His adopters say he's been such a good boy and loving life".