WASHINGTON (Reuters) - Scientists are expressing surprise after discovering a solar system 30 light-years away from Earth that defies current understanding about planet formation, with a large Jupiter-like planet orbiting a diminutive star known as a red dwarf.
Stars generally are much bigger than even the largest planets that orbit them. But in this case, the star and the planet are not much different in size, the researchers said on Thursday.
The star, called GJ 3512, is about 12% the size of our sun, while the planet that orbits it has a mass of at least about half of Jupiter, our solar system’s largest planet.
“Yes, an absolute surprise,” said astrophysicist Juan Carlos Morales of the Institute of Space Studies of Catalonia at the Institute of Space Sciences in Spain, who led the research published in the journal Science.
And here's another article:
Nobel prize in physics for discovery of exoplanet orbiting a star | New Scientist
The Nobel prize in physics has been awarded to James Peebles, Michel Mayor and Didier Queloz for their contributions to our understanding of the evolution of the universe and Earth's place in the cosmos.
One half of the award went to James Peebles at Princeton University for theoretical discoveries in physical cosmology, and the other half was jointly awarded to Michel Mayor at the University of Geneva and Didier Queloz at the universities of Geneva and Cambridge for their discovery of an exoplanet orbiting a solar-type star.
Peebles' research over two decades has formed the basis for our understanding of the universe's history after the big bang. He made theoretical predictions about the shape of the universe and the matter and energy that it contains! Scientists puzzled by really big planet orbiting really ...news.yahoo.com / scientists - puzzled ...Scientists are expressing surprise after discovering a solar system 30 light-years away from Earth that defies current understanding about planet formation, with a large Jupiter-like planet orbiting a diminutive star known as a red dwarf. The star, called GJ 3512, is about 12% the size of our sun, while ...Scientists puzzled by really big ...!! These were later validated by measurements of background radiation.
Japanese satellite re-enters atmosphere after experiments in ultra-low orbit – Spaceflight
An experimental Japanese satellite has ended its mission after proving it could operate at super-low altitudes, testing an Earth-imaging camera and using ion propulsion to fight against aerodynamic drag at an altitude of 112 miles (181 kilometers).
The Japan Aerospace Exploration Agency’s Tsubame satellite, named for the Japanese word for barn swallow, re-entered the atmosphere Oct. 2 after a nearly three-year mission.
Tsubame, also known as the Super Low Altitude Test Satellite, demonstrated controlled flight in an unusually low orbit, skimming through the rarefied layers of the upper atmosphere where aerodynamic drag typically causes spacecraft to quickly drop out of orbit and burn up.
JAXA’s Tsubame satellite carried an ion thruster, powered by electricity and fueled by xenon gas, to counteract the effect of atmospheric drag. The spacecraft also had an on-board camera to demonstrate the capability to collect high-resolution images of cities and landforms from an altitude as low as 112 miles.
SpaceX just filed a request to run 30,000 more Starlink satellites in orbit - MIT Technology
"In general there is an advantage to having more satellites if you're trying to provide high-bandwidth services with lots of coverage," says Brian Weeden, the director of program planning at the Secure World Foundation! Scientists puzzled by really big planet orbiting really ...www.reuters.com ...Scientists puzzled by really big planet orbiting really little star. Will Dunham. 3 Min Read. WASHINGTON (Reuters) - Scientists are expressing surprise after discovering a solar system 30 light ...!! Just as more mobile-phone towers can provide more coverage to customers, more satellites could connect more users to the internet.
"That said," Weeden adds, "that number sounds really high, and it's hard to tell whether it's justified without seeing more details."
After a company makes a filing requesting spectrum, it has seven years to launch a satellite with the requested frequencies and must operate it for at least 90 days. Failure to accomplish these steps opens the spectrum rights up again.
Securing that much spectrum could involve a protracted legal battle, depending on whether frequencies have already been allocated for any space or terrestrial services! Scientists puzzled by really big planet orbiting really ...news.yahoo.com / scientists - puzzled ...Scientists are expressing surprise after discovering a solar system 30 light-years away from Earth that defies current understanding about planet formation, with a large Jupiter-like planet orbiting a diminutive star known as a red dwarf. The star, called GJ 3512, is about 12% the size of our sun, while!! SpaceX may also be trying to get ahead of the competition and drown the ITU in more paperwork—especially since the ITU is expected to add more stringent spectrum reservation rules during a conference in a few weeks! Scientists puzzled by big planet orbiting little star - CNA ...planet-orbiting...Scientists puzzled by big planet orbiting little star An artistic impression of the gas giant planet GJ 3512b orbiting its red dwarf host star, released on Sep 26, 2019. (Guillem...!! Weeden also says the company may not be interested in actually launching 30,000 satellites: "I think this may be a case of SpaceX planning ahead and starting the request now for what is likely to be a very long and drawn-out process, and not necessarily indicative of what they actually plan to do."
Many things are taking place:
Could a habitable planet orbit a supermassive black hole? - MIT Technology Review
Interstellar holds a special place for science fiction fans. The film's executive producer and scientific advisor was Kip Thorne, a Nobel Prize–winning physicist who vowed that nothing in the film would violate the laws of physics and that any wild speculation would stem from science.
Various planets orbit Gargantuan. So NASA sends a number of missions to survey the planets in the hope of finding one that is habitable.
Much has been written about the scientific accuracy of the film, its depiction of black holes, and so on, most of it full of praise! Videos for Scientists Puzzled By 6:21 Scientists puzzled by discovery of new human organ called 'mes...Facebook!! The physicist Michio Kaku said it was the gold standard by which future science fiction films will be judged.
But one question has yet to be addressed—is it possible for a habitable planet to orbit a supermassive black hole at all? And today, we get an answer thanks to the work of Jeremy Schnittman at the NASA Goddard Space Flight Center in Greenbelt, Maryland.
How the Nobel Prize-Winning Exoplanet Was Found | Space
The most recent Nobel Prize in Physics was split between Jim Peebles, a cosmologist extraordinaire, and a pair of Swiss astronomers, Michel Mayor and Didier Queloz.
Mayor and Queloz found the first exoplanet orbiting a sunlike star, which was a landmark discovery for two reasons: it showed conclusively that the sun isn't the only star to host a family of planets (something we had long figured but never demonstrated), and also that the universe is really, really weird.
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The careful reader will note in the paragraph above that I was very clear in my wording: Mayor and Queloz discovered the first exoplanet orbiting a sunlike star, not the first exoplanet itself . That credit goes to Aleksander Wolazczan and Dale Frail in 1992. And in fact, they got a two-for-one deal, finding two planets orbiting the same star.
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