WASP-189b takes fewer than three days to orbit its star, with one side experiencing a permanent ‘night’ and the other a permanent ‘day’
As the study of planets outside our solar system continues, astronomers have discovered what they have described as the ‘most extreme planet’ ever observed, with surface temperatures more blistering than those of some stars.
Researchers at the University of Bern say that the exoplanet, dubbed WASP-189b, is a gaseous giant 1.6 times larger than Jupiter and can record temperatures of up to 3,200 degrees Celsius, hot enough enough to met all rocks and metal and turn them into gaseous form.
The planet, they said, orbits the star HD 133112, known to be one of the hottest stars with a planetary system 2,000 degrees Celsius hotter than our Sun.
Despite being an enormous gaseous giant, WASP-189b is situated much closer to its star than Jupiter is to the sun, and so only take 2.7 days to orbit its star, with one side experiencing a permanent ‘night’ and the other a permanent ‘day’.
“WASP-189b is especially interesting because it is a gas giant that orbits very close to its host star,” astrophysicist Monika Lendl said, according to the university’s press release. “It takes less than three days for it to circle its star, and it is 20 times closer to it than Earth is to the Sun.”
The exoplanet is located 326 light years away and much too close to its star to be able to observe it directly. Researchers used the CHaracterising ExOPlanet Satellite (CHEOPS) space telescope, owned by the European Space Agency to be able to record high precise brightness measurements detecting the planet’s movements. By observing the exoplanet’s occultations – passing behind the star — and transits — passing in front of the star — scientists gathered data on the brightness, size, temperature and movements of the planet, as well as some information on the star it orbits.
Lendi called the planet an ‘ultra-hot Jupiter’, on which the burning temperatures are so high that they can melt iron and turn it into a gas. While the planet is not as hot as the Sun, which burns at a temperature of 6,000 degrees Celsius, researchers say the observed temperature match those found on some small dwarf stars.
“Only a handful of planets are known to exist around stars this hot, and this system is by far the brightest,” Lendi said. “WASP-189b is also the brightest hot Jupiter that we can observe as it passes in front of or behind its star, making the whole system really intriguing.”
NASA astronaut Kate Rubins votes from the ISS: “If we can…
This story is part of 2020 elections, CNET’s coverage of the November vote preparations.
Whichever way you cast your vote, you must admire this NASA astronaut who managed to cast her vote from space. Kate Rubins, currently on duty aboard the International Space Station, posted a photo of herself in front of a padded booth labeled “ISS Voting Booth” with the text “From the International Space Station: I voted today”.
NASA notes that this is not Rubins’ first vote from space. She did this in 2016 when she was also on the ISS.
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“I think it’s really important that everyone votes,” said Rubins in a video uploaded by NASA. “And if we can get it out of space, then I believe people can do it from the ground too.” Rubins’ six-month ISS mission began on October 14, which was also her 42nd birthday.
Most astronauts choose the Texas resident election because they move to Houston to train. However, NASA said those wishing to vote as residents of their home state can take special precautions.
Ballot papers from the district in which the astronaut is registered are tested on a training computer at the space station. The actual voting slip is then generated and forwarded to the ISS with the log-in information specific to the crew in order to ensure safety. The completed voting slip is electronically returned to Earth for official return.
“Voting in space has been possible since 1997, when a law was passed that allowed legal voting in space in Texas,” NASA said in a statement. “Since then, several NASA astronauts have performed this civic duty from orbit. As NASA works towards sending astronauts to the moon and eventually Mars in 2024, the agency plans to continue to ensure that astronauts who want to vote in space are able no matter where in the solar system they may be. ”
NASA had expected the U.S. astronauts to vote with Rubins from space on the SpaceX Crew 1 mission to the ISS, but their mission has been postponed until early to mid-November so they can now vote from Earth.
Look at that:
Make a plan to vote for the November elections
Source: – AlKhaleej Today
SpaceX reaches 100 successful launches with Starlink mission – SpaceNews
WASHINGTON — SpaceX launched another set of Starlink satellites Oct. 24, marking the 100th time the company has placed payloads into orbit.
The Falcon 9 rocket lifted off from Space Launch Complex 40 at Cape Canaveral Air Force Station at 11:31 a.m. Eastern. The rocket’s upper stage deployed the payload of 60 Starlink satellites into orbit 63 minutes after liftoff. The first stage, making its third flight, landed on a droneship in the Atlantic Ocean.
This was the 100th successful launch in the company’s history. That total includes 95 Falcon 9, three Falcon Heavy and two Falcon 1 launches. The company also suffered three Falcon 1 launch failures and one Falcon 9 launch failure; another Falcon 9 was destroyed in 2016 during preparations for a static-fire test.
The launch was the third Starlink mission in less than two weeks, after Falcon 9 launches Oct. 6 and Oct. 18 that each carried 60 Starlink satellites into orbit. The company has now launched 895 Starlink satellites, 55 of which have reentered either because of passive orbital decay or by being actively deorbited.
SpaceX has boasted in filings with the Federal Communications Commission of the high reliability of the Starlink satellites. That included an Oct. 15 filing about an ex parte meeting between SpaceX and FCC staff where the company noted “the successful launch and operation of nearly 300 additional satellites without a failure” since an earlier report filed with the FCC.
That streak, though, may have been broken on the previous launch. Satellite observers noted that one of the satellites on the Oct. 18 launch, identified as Starlink-1819, was not raising its orbit like the other 59. Tracking data showed that satellite’s orbit was instead decaying, suggesting it had malfunctioned.
Starlink 1819 appears to be in trouble. Kelso’s SupTLEs (magenta) derived from SpaceX data stopped on Oct 20; 18SPCS TLEs (green) started for it later the same day and show continued decay. All other sats from the launch (red) are raising orbit pic.twitter.com/No1Kbr3Ke1
— Jonathan McDowell (@planet4589) October 21, 2020
SpaceX and its competitors have debated the reliability of Starlink satellites in a series of FCC filings in recent weeks. Viasat has argued that the failure rate of Starlink satellites is far higher than what SpaceX has promised, although the company made that argument in part on the apparent deliberate deorbiting of the original 60 “v0.9” Starlink satellites launched in May 2019.
The recent surge in Starlink launches is taking place as two other Falcon 9 missions remain on hold. The last-second scrub of a Falcon 9 launch of a GPS 3 satellite Oct. 2 has yet to be rescheduled, and the investigation into the gas generator problem that caused the scrub led NASA to postpone the Falcon 9 launch of the Crew-1 commercial crew mission, which had been scheduled for Oct. 31.
The Crew-1 launch remains on hold. In a series of tweets Oct. 21, Kathy Lueders, NASA associate administrator for human exploration and operations, said investigators were making “good progress” on understanding the engine issue, but that they were not ready to report the cause of the problem.
She did note that SpaceX will replace one Merlin engine on both the booster that will be used for the Crew-1 mission and the booster for the launch of the Sentinel-6 Michael Freilich ocean science satellite, scheduled for Nov. 10 from Vandenberg Air Force Base. The Sentinel-6 Michael Freilich launch remains on schedule for that launch even with the engine swap, she said.
The earliest Crew-1 would launch is mid-November, Lueders said. “We will want a few days between Sentinel-6 and Crew-1 to complete data reviews and check performance. Most importantly, we will fly all our missions when we are ready.”
SpaceX launches 60 more Starlink internet satellites from Cape Canaveral – CBS News
A SpaceX Falcon 9 rocket launched 60 more Starlink internet relay satellites on Saturday, boosting the total number launched to date to 895 as the company builds out aof thousands designed to provide global high-speed broadband service.
Running two days late because of an on-board camera issue, the Falcon 9’s twice-flown first stage thundered to life at 11:31 a.m. EDT, pushing the 229-foot-tall rocket away from pad 40 at the Cape Canaveral Air Force Station. It was the California rocket builder’s 19th launch so far this year and its 15th Starlink flight.
The climb out of the lower atmosphere went smoothly and, as usual for SpaceX, the Falcon 9’s first stage flew itself back to landing on an off-shore drone ship. After two second stage engine firings, all 60 Starlink satellites were released to fly on their own, chalking up the company’s 95th successful Falcon 9 flight and 100th overall.
SpaceX’s Starlink operation has regulatory approval to launch more than 12,000 of the small satellites in multiple orbital planes, providing commercial users with line-of-sight access to space-based broadband signals from any point on Earth. The company already is testing the service in selected areas.
With Saturday’s launch, SpaceX has put 895 Starlinks into orbit, 180 of them — more satellites than any other company owns — in less than three weeks.
Astrophysicist Jonathan McDowell, a noted spaceflight analyst, reports 53 Starlinks have been deliberately deorbited to date, two re-entered on their own after failures and another 20 no longer appear to be maneuvering. Including the 60 launched Saturday, that leaves some 820 presumably operational Starlinks in orbit.
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