"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! Videos for SpaceX Just Filed A Request To Run 1:40 Team Associated Reflex 14T/B Losi mini 8ight wheels fit! YouTube!! 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! Flipboard: SpaceX just filed a request to run 30,000 more ...000-more...SpaceX just filed a request to run 30,000 more Starlink satellites in orbit MIT Technology Review - Neel V . Patel The company wants permission to turn its proposed mega-constellation into a behemoth in low Earth orbit. But its motives are unclear.!! 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! SpaceX is requesting permission to launch 30,000 more ...www.engadget.com /2019/10/16/ spacex ...Some of the company's critics believe that the filings are just a ploy to drown the ITU in studies now that it's on the verge of changing its rules. Whether that's true or not, filing with the ITU ...!! 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."
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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! SpaceX seeks to reserve spots for 30,000 more Starlink ...finance.yahoo.com /news/ spacex ...SpaceX has filed paperwork with the International Telecommunication Union to add up to 30,000 Starlink broadband data satellites to the 12,000 it's already been cleared to put in orbit. The ...!! These were later validated by measurements of background radiation.
Kurkjian's October tales: Attention, passengers.
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.
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Scientists puzzled by really big planet orbiting really little star - Reuters
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.
A giant exoplanet orbiting a very-low-mass star challenges planet formation models | Science
M dwarfs, the most common type of star, are low-mass objects that emit most of their faint light in the near-infrared, making it difficult to detect any orbiting exoplanets! SpaceX delays launch to run additional tests on rocket ...launch- ...on...SpaceX announced the three-day delay in a tweet Thursday. Standing down from Friday's launch attempt to run additional tests on Falcon 9's second stage . Rocket and payload are in good health.!! Morales et al. have observed the nearby M dwarf GJ 3512 in the optical and near-infrared (see the Perspective by Laughlin). Periodic variations in the star's radial velocity show that it hosts a gas giant exoplanet on an eccentric orbit. The authors use simulations to show that such a large exoplanet around such a small star has implications for models of planet formation.
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Surveys have shown that super-Earth and Neptune-mass exoplanets are more frequent than gas giants around low-mass stars, as predicted by the core accretion theory of planet formation. We report the discovery of a giant planet around the very-low-mass star GJ 3512, as determined by optical and near-infrared radial-velocity observations. The planet has a minimum mass of 0.46 Jupiter masses, very high for such a small host star, and an eccentric 204-day orbit. Dynamical models show that the high eccentricity is most likely due to planet-planet interactions. We use simulations to demonstrate that the GJ 3512 planetary system challenges generally accepted formation theories, and that it puts constraints on the planet accretion and migration rates. Disk instabilities may be more efficient in forming planets than previously thought.
SpaceX wants permission to turn its proposed mega-constellation into a behemoth in low Earth orbit. The question is… https://t.co/12IaLJPiOB techreview (from Cambridge, MA) Tue Oct 15 23:04:26 +0000 2019
Wow, SpaceX/Starlink just filed for 30,000 satellites. https://t.co/5YXDn8orYH fcain (from Courtenay, British Columbia) Tue Oct 15 16:48:50 +0000 2019
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