"A giant planet is not as easily scattered into an eccentric orbit as a smaller planet, but if there are multiple giant planets close to the host star, their gravitational interactions are more likely scatter them into eccentric orbits," explained first author Renata Frelikh, a graduate student in astronomy and astrophysics at UC Santa Cruz.
Frelikh performed hundreds of simulations of planetary systems, starting each one with 10 planets in circular orbits and varying the initial total mass of the system and the masses of individual planets! Simulations explain giant exoplanets with eccentric, close ...phys.org ...simulations - giant - ...close-in.html Simulations explain giant exoplanets with eccentric, close-in orbits. by University of California - Santa Cruz. Credit: CC0 Public Domain As planetary systems evolve, gravitational interactions ...!! As the systems evolved for 20 million simulated years, dynamical instabilities led to collisions and mergers to form larger planets as well as gravitational interactions that ejected some planets and scattered others into eccentric orbits.
Analyzing the results of these simulations collectively, the researchers found that the planetary systems with the most initial total mass produced the biggest planets and the planets with the highest eccentricities.
And here's another article:
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! Simulations explain giant exoplanets with eccentric, close ...news.ucsc.edu/2019/10/ giant -planets.html Simulations explain giant exoplanets with eccentric, close-in orbits A giant-impacts phase in the evolution of planetary systems can explain the observations of close-in giant planets with eccentric orbits October 30, 2019 By Tim Stephens!! 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.
Mysterious secret American 'space plane' lands after orbiting for more than two years
A mysterious robotic 'space plane' stayed in orbit for 780 days - more than two years - before finally landing on Sunday.
The unmanned space plane touched down at NASA's Kennedy Space Center in Florida on Sunday.
The Boeing X-37B craft - also known as Orbital Test Vehicle 4 - was on a classified mission, testing new technologies.
* * *
Observers have speculated that the Space Shuttle-esque vehicle might be designed to destroy satellites, or spy on other countries.
The X37-B first went into space in 2010 and has completed five missions. The craft can carry cargo loads into space and return them to engineers on Earth.
The Air Force has said it performs "risk reduction, experimentation, and concept of operations development for reusable space vehicle technologies".
NASA Space Station On-Orbit Status 28 October 2019 - Japan's HTV-8 Set to Leave - SpaceRef
A Japanese cargo vehicle will be departing the International Space Station and a U.S. vehicle beginning its trip there this Saturday! Simulations explain giant exoplanets with eccentric, close ...sciencespies.com/space/ ...eccentric...Simulations explain giant exoplanets with eccentric, close-in orbits. October 30, 2019 by admin 0 Comments. Space. Credit: CC0 Public Domain. More. As planetary systems evolve, gravitational interactions between planets can fling some of them into eccentric elliptical orbits around the host star, or even out of the system altogether. Smaller ...!! The Expedition 61 crew is getting ready for both missions while staying busy with space research and lab maintenance.
Japan's HTV-8 resupply ship, also known as Kounotori, will depart the orbiting lab at the end of the week and complete a 34-day cargo mission attached to the Harmony module! Simulations explain giant exoplanets with eccentric, close ...www.sciencecodex.com/ ...close...Simulations explain giant exoplanets with eccentric, close-in orbits As planetary systems evolve, gravitational interactions between planets can fling some of them into eccentric elliptical orbits around the host star, or even out of the system altogether.!! NASA Flight Engineers Jessica Meir and Andrew Morgan are loading the craft today with trash and obsolete gear. Meir will back up fellow NASA astronaut Christina Koch on Friday when she releases HTV-8 from the grips of the Canadarm2 robotic arm at 1:20 p.m. EDT.
Commander Luca Parmitano spent a few moments Monday afternoon checking samples for the Ring Sheared Drop human health and advanced materials investigation! Simulations explain giant exoplanets with eccentric, close ...parallelstate.com/news/ ...eccentric...Simulations explain giant exoplanets with eccentric, close-in orbits - PARALLEL STATE A giant-impacts phase in the evolution of planetary systems can explain the observations of close-in giant planets with eccentric orbits. Simulations explain giant exoplanets with eccentric, close-in orbits!! The ESA (European Space Agency) astronaut also joined Morgan during the morning and reviewed spacewalk repair procedures for the Alpha Magnetic Spectrometer.
Quite a lot has been going on:
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.
Astrocast Signs Launch Agreement With D-Orbit - Via Satellite -
Astrocast and D-Orbit signed an agreement for the launch and deployment of ten Astrocast nanosatellites into Low Earth Orbit (LEO), through D-Orbit 's InOrbit Now Launch Service. The agreement calls for the Astrocast nanosatellites to be launched onboard an Arianespace Vega or Vega C vehicle from Kourou, French Guiana, in the first quarter of 2022.
This batch of nanosatellites will make up the Astrocast Internet of Things (IoT) Nanonsatellite Network's equatorial plane. The Astrocast constellation will consist of eight orbital planes, each consisting of eight operational and two spare satellites. Astrocast's constellation is expected to serve the maritime, oil and gas, mining, supply chain and logistics, automotive, and utilities sectors.
"We are honored to contribute to the expansion of Astrocast's infrastructure in low inclination orbits" commented Renato Panesi, D-Orbit COO. "This contract expands previous agreements with Astrocast and strengthens the cooperation between the two companies. We feel honored by Astrocast's renewed trust in our company and it's a privilege for D-Orbit to contribute to such an important mission".
Simulations explain giant exoplanets with eccentric, close-in orbits @AAS_Publishing @AAS_Office https://t.co/BCZ6hwnSUP physorg_com Wed Oct 30 17:30:48 +0000 2019
Simulations à l'appui, Mediapart détaille les conséquences catastrophiques de la réforme des règles de l'assurance-… https://t.co/kVMPZVhMo3 Mediapart (from Paris) Mon Oct 28 17:18:02 +0000 2019
La réforme de l'assurance-chômage, d'une ampleur inégalée, commence à entrer en vigueur le 1er novembre avant de fo… https://t.co/CRNePBQjDt edwyplenel (from Paris (France)) Mon Oct 28 12:21:32 +0000 2019
Exceptionnel travail d'analyse de @dan_mdpt, données et simulations à l'appui, sur les ravages à venir de la réform… https://t.co/gqi3EngMpo fabricearfi Mon Oct 28 15:00:26 +0000 2019
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