Thousands of planets may form and orbit around the kind of supermassive black holes found in the cores of most, if not all, galaxies, a new study finds.
"Planets are not only orbiting around stars, but also around supermassive black holes," study lead author Keiichi Wada, an astrophysicist at Kagoshima University in Japan, told Space.com.
When new stars form, the clouds of gas and dust around them collapse to form disks. Previous research suggested that planets originate within these "protoplanetary disks" as gravity pulls clumps of matter together into larger masses; the Atacama Large Millimeter/submillimeter Array (ALMA) has mapped 20 such planet-building disks around nearby stars to extraordinary detail.
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However, stars are not the only astronomical bodies surrounded by disks of gas and dust. Such disks also often surround supermassive black holes with masses that are millions to billions of times that of Earth's sun. This led Wada and his colleagues to investigate whether planets might form around such black holes.
Other things to check out:
Newly Discovered Planet Challenges Astronomers' Notions Of How Planets Form : NPR
A team of scientists used a telescope at the Calar Alto Observatory in Spain to detect a gas giant orbiting a tiny red star some 30 light-years from Earth. Baback Tafreshi/Science Source/Getty Images hide caption
An oddball solar system discovered not too far from our own is forcing astronomers to reexamine their ideas about how planets get created.
In the journal Science, researchers report they detected a small, dim red dwarf star, about 30 light-years from Earth, being tugged by the gravity of what must be a huge, Jupiter-like planet.
"It's a very large planet, for such a small star," says Juan Carlos Morales , an astrophysicist at the Institute of Space Studies of Catalonia in Barcelona who was part of the research team.
It's so big, he says, that its existence can't be explained by the conventional wisdom about how solar systems develop.
Ask Ethan: Would An Alien Civilization Classify Earth As An 'Interesting' Planet?
The ideal 'Earth 2.0' will be an Earth-sized, Earth-mass planet at a similar Earth-Sun distance from ... [+] a star that's very much like our own. We have yet to find such a world, but are working hard to estimate how many such planets might be out there in our galaxy! Rogue, Starless Planets May Circle Black Holes - Alien UFO ...holes Rogue, Starless Planets May Circle Black Holes by Alien UFO Sightings October 23, 2019 by Alien UFO Sightings October 23, 2019 0 comment Thousands of planets may form and orbit around the kind of supermassive black holes found in the cores of most, if not all, galaxies, a new study finds.!! With so much data at our disposal, it's puzzling how varied the different estimates are.
I was thinking about the projection of light through space. My curtain was open and I saw the stars and something from a book popped into my head. It had said that the stars we see are basically reruns! Rogue, Starless Planets May Circle Black Holes - Very Top ...holes Rogue, Starless Planets May Circle Black Holes - Very Top Secret Information Thousands of planets may form and orbit around the kind of supermassive black holes found in the cores of most, if not all, galaxies, a new study finds.!! The light is from so long ago, we don't even know if the star still exists or not.
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I think these are great questions to ponder, and that science has an awful lot to say about what aliens would see by looking at Earth.
The orbits of the eight major planets vary in eccentricity and the difference between perihelion ... [+] (closest approach) and aphelion (farthest distance) with respect to the Sun. There is no fundamental reason why some planets are more or less eccentric than one another; it's simply a result of the initial conditions from which the Solar System formed! Rogue, Starless Planets May Circle Black Holes ..._black...Rogue, Starless Planets May Circle Black Holes. Charles Q. Choi, Space.com October 24, 2019. NASA. Thousands of planets may form and orbit around the kind of supermassive black holes found in the cores of most, if not all, galaxies, a new study finds.!! However, the odds of a transit are much greater for an inner planet like Mercury, which makes 4 such transits every Earth year and has nearly a 2% chance of a good alignment, than any of the outer planets, which take longer to transit and have much lower odds of a good-enough alignment.
A Science-Based Origin Story for a Planet-Changing Species - Scientific American Blog Network
The young Earth was wrapped in a warm blanket of greenhouse gases such as carbon dioxide and methane, that were burped up from deep under the crust! Rogue, Starless Planets May Circle Black Holes - reddit.com www.reddit.com /.../comments/dmcxfs/ ..._black_holes r/ScienceUncensored: ScienceUncensored is a place for anyone to post any interesting science or technology related news, data, articles, pictures …!! A greenhouse atmosphere kept its oceans liquid even though solar emissions were much weaker than today! Flipboard: Rogue, Starless Planets May Circle Black Holes flipboard.com/article/ ...holes/a-TDntZr...Rogue , Starless Planets May Circle Black Holes space .com - Charles Q . Choi Thousands of planets may form and orbit around the kind of supermassive black holes found in the cores of most, if not all, galaxies, a new study …!! Surface temperatures were regulated by geological feedback mechanisms that tweaked the levels of greenhouse gases. When temperatures rose, more water evaporated from the oceans and there was more rainfall. More rainfall washed large amounts of carbon dioxide from the atmosphere. Dissolved carbon dioxide formed carbonic acid, which eventually buried lots of carbon in carbonate rocks in the oceans. Some got buried even deeper, beneath the crust.
But the small, scurrying, rodentlike organisms that were our mammalian ancestors generally did better. In a post-asteroid world, mammals flourished, diversified and became the dominant animal species on land. Our primate ancestors were among the survivors. Mammals were warm-blooded, so they needed lots of energy, so they needed plenty of food, so they needed more smarts, which is one reason why they were generally brainier than dinosaurs. Primates were particularly brainy.
Many things are taking place:
Lessons from scorching hot weirdo-planets
Illustration of a hot Jupiter planet in the Messier 67 star cluster. Hot Jupiters are so named because of their close proximity — usually just a few million miles — to their star, which drives up temperatures and can puff out the planets.
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Hot Jupiters were the first kind of exoplanet found. A quarter-century later, they still perplex and captivate — and their origins hold lessons about planet formation in general.
In 1995, after years of effort, astronomers made an announcement: They'd found the first planet circling a sun-like star outside our solar system. But that planet, 51 Pegasi b, was in a quite unexpected place — it appeared to be just around 4.8 million miles away from its home star and able to dash around the star in just over four Earth-days. Our innermost planet, Mercury, by comparison, is 28.6 million miles away from the sun at its closest approach and orbits it every 88 days.
Which Planet Has The Most Moons?
Jupiter may be the undisputed king of the planets in the solar system, but its record of 79 moons has just been smashed after the announcement of a stunning 20 new outer moons at Saturn.
Previously thought to have 62 moons, the discovery puts the ringed planet's new total at a peerless 82 moons.
Announced Monday by the International Astronomical Union's Minor Planet Center, all 20 are outer moons about three miles/five kilometers in diameter.
An artist's conception of the 20 newly discovered moons orbiting Saturn. These discoveries bring the ... [+] planet's total moon count to 82, surpassing Jupiter for the most in our Solar System. Studying these moons can reveal information about their formation and about the conditions around Saturn at the time. Illustration is courtesy of the Carnegie Institution for Science.
Rogue, Starless Planets May Circle Black Holes https://t.co/Y2DYj7xYN1 https://t.co/goV4Wbb2TA SPACEdotcom (from NYC) Wed Oct 23 18:06:33 +0000 2019
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