Astronomers have spotted an enormous planet orbiting a tiny star about 31 light years away. It is so big that it can’t have formed in the way that we think most planets do.
Juan Carlos Morales at the Autonomous University of Barcelona in Spain and his colleagues spotted the planet, called GJ 3512 b, using a technique called the radial velocity method . This takes advantage of the fact that as a planet orbits its star, the star moves slightly in a way that allows astronomers to determine the planet's mass and orbit.
Using more than two years of observations with the CARMENES exoplanet survey in Spain, the researchers found that GJ 3512 b is at least 46 per cent as massive as Jupiter and orbits its star once every 204 days. The star itself is only 12 per cent as massive as our sun – or about 126 times the mass of Jupiter.
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Bloomberg - Are you a robot?
"The Gargantua Hypothesis" --Habitable Planets May Be Orbiting Black Holes | The Daily
A bigger problem says Schnittman “is that if the accretion rate were lower, the density of the disc would also be lower, making it more difficult to radiate! An unexpectedly enormous planet is orbiting a tiny star ...www.newscientist.com /article/2217808- ...An unexpectedly enormous planet is orbiting a tiny star Space 26 September 2019 By Leah Crane!! And without this radiation, the accretion disc would just heat up beyond the temperature of liquid water! An unexpectedly enormous planet is orbiting a tiny star ...a...Astronomers have spotted an enormous planet orbiting a tiny star about 31 light years away. It is so big that it can't have formed in the way that we think most planets do. Juan Carlos Morales at the Autonomous University of Barcelona in Spain and his colleagues spotted the planet , called GJ 3512 b , using a technique called the radial velocity method .!! So there is a paradox at the heart of this argument that ultimately invalidates it.”
Schnittman calculates that a planet orbiting just beyond the gravitational radius would experience enough heating from the cosmic microwave background to do the trick. "This would be like orbiting a white dwarf at a distance of 0.2 AU," providing enough energy for liquid water, but would also bathe the planet in dangerous levels of ultraviolet.
Then there is the light from o the density of stars at galaxy centers where the night sky of the alien black hole planet would be 100,000 times brighter than on Earth, providing a significant background of UV light and x-rays. Schnittman imagines, reports Technology Review that a civilization that is sufficiently advanced to construct a sort of "reverse Dyson sphere" that reflects this energy. "This would allow habitability much closer to the host supermassive black hole, even in the face of overwhelming background UV or x-ray radiation."
Astronomers Detect a 'Hot Jupiter' With a Staggering 18-Hour-Short Orbit
We have a new record. Perhaps 1,060 light-years away, a gas giant called NGTS-10b is whipping around its star so closely, it completes an entire orbit in just 18.4 hours.
That's nearly as close as the planet can get to the host star without being ripped apart by gravitational forces! An unexpectedly enormous planet is orbiting a tiny star ...star Boris Johnson 'faces Cabinet revolt on Brexit' as ministers say Dominic Cummings' aggressive plan has 'clearly failed' – amid warnings of riots if we don't leave the EU!! But it will get closer.
Astronomers have estimated that the exoplanet is spiralling in towards the star, and will cross that ripping-apart point - called the Roche limit - in just 38 million years! Flipboard: An unexpectedly enormous planet is orbiting a ...flipboard.com/article/ ...star...An unexpectedly enormous planet is orbiting a tiny star | New Scientist. newscientist.com - By Leah Crane. Astronomers have spotted an enormous planet orbiting a tiny star about 31 light years away. It is so big that it can't have formed in the way that we …!! It's utterly doomed.
The finding makes this solar system an incredible laboratory for studying tidal interactions between a star and a perilously close giant exoplanet! Flipboard: An unexpectedly enormous planet is orbiting a ...a-tiny...An unexpectedly enormous planet is orbiting a tiny star | New Scientist newscientist .com - By Leah Crane Astronomers have spotted an enormous planet orbiting a tiny star about 31 light years away.!! A paper describing the exoplanet - which belongs to the 'hot Jupiter' type - has been published on pre-print resource arXiv .
Hot Jupiters are fascinating exoplanets. As the name suggests, they are gas giants like Jupiter; unlike Jupiter, however, they orbit very closely to their host stars, with orbital periods of less than 10 days. This is what makes them "hot" (and here you were thinking it was the swimsuits).
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Virgin Orbit plans to launch first commercial small satellites to Mars – TechCrunch
The consortium is working to follow in the footsteps of the NASA Jet Propulsion Laboratory’s MarCO mission from 2018, which saw two smaller satellites successfully launched to Mars. The group’s early studies have suggested that even satellites as small as 50 kg (around 110 lbs), or potentially even smaller, can provide meaningful and useful research, including imagery collection, from both Mars and its orbiting body, Phobos. These satellites could provide key info about the atmospheric composition of Mars, or even scouting for underground water, Virgin Orbit says.
Warsaw-based SatRevolution has experience in the commercial space industry, and in April this year sent Poland’s first commercial nano satellite into orbit. The universities involved, which include the AGH University of Science and Technology, Wroclaw University of Science and Technology and many others, all have experience in space industry research, as well. The plan is to launch the spacecraft developed by the universities and SatRevolution aboard Virgin’s LauncherOne rocket, which takes off from a converted 747-400 Virgin has retrofitted for the process.
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. These were later validated by measurements of background radiation.
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