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! Related searches "The Gargantua Hypothesis" the hypothesis example what is a hypothesis in science hypothesis for kids difference between hypothesis and hypotheses what is the meaning of hypothesis scientific definition of hypothesis how to write the hypothesis how to form a hypothesis!! And without this radiation, the accretion disc would just heat up beyond the temperature of liquid water! Related searches the hypothesis example hypothesis for kids what is the meaning of hypothesis how to write the hypothesis what is a hypothesis in science difference between hypothesis and hypotheses scientific definition of hypothesis how to form a hypothesis!! 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."
And here's another article:
Planet 9 could be an ancient black hole orbiting the sun - Business Insider
At the edge of our solar system, some unknown object is manipulating the paths of chunks of ice as they circle the sun.
These objects' oval-shaped orbits all point in the same direction and tilt the same way, suggesting that an unseen force is herding them.
At first, scientists thought the culprit was a mysterious planet, which they dubbed Planet Nine (though some call it Planet X ). But a new paper suggests the gravitational pull could come from a primordial black hole — a type of small black hole that scientists have theorized formed during the Big Bang.
Although the existence of primordial black holes has not been confirmed, some scientists think the universe is teeming with them. If they exist, such black holes could make up the 80% of the universe that scientists can't see. They know this " dark matter " exists because its gravity pulls on things throughout the universe.
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. 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.
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.
Check out this next:
An unexpectedly enormous planet is orbiting a tiny star | New Scientist
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.
Saturn is the solar system's 'moon king,' with 20 more spotted - Reuters
WASHINGTON (Reuters) - Saturn is now being recognized as the “moon king” of our solar system, with astronomers spotting 20 more of them orbiting the giant ringed planet, bringing its total count to 82 - three more than Jupiter.
The newly identified small moons, ranging from about 2 to 4 miles (3 to 6 km) in diameter, were detected using the Subaru telescope in Hawaii by a research team led by astronomer Scott Sheppard of the Carnegie Institution for Science in Washington.
The discovery was announced this week by the International Astronomical Union’s Minor Planet Center.
One of the moons orbits at an astounding distance of about 15 million miles (24 million km) from Saturn, farther away than any of its other moons. By comparison, Earth’s moon orbits about 240,000 miles (386,000 km) from the planet.
This very rare high-five features the giant Australian stick insect species, Ctenomorpha gargantua. They are consi… https://t.co/YW6z8trocu CSIRO (from Australia) Tue Oct 08 05:30:00 +0000 2019
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