(CNN) Just 11 light years from earth is the GJ 15 A star system with two planets orbiting a red-dwarf star. This makes it the closest solar system to Earth that contains multiple planets.
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What moons in other solar systems reveal about planets like Neptune and Jupiter
Bradley Hansen does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.
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What is the difference between a planet-satellite system as we have with the Earth and Moon, versus a binary planet – two planets orbiting each other in a cosmic do-si-do?
In 2018, two astronomers from Columbia University reported the first tentative observation of an exomoon – a satellite orbiting a planet that itself orbits another star. One curious feature was that this exomoon Kepler-1625b-i was much more massive than any moon found in our solar system! This is the closest solar system to Earth containing ...fox43.com /2019/10/17/ ...containing...Just 11 light years from earth is the GJ 15 A star system with two planets orbiting a red-dwarf star. This makes it the closest solar system to Earth that contains multiple planets. The Alpha...!! It has a mass similar to Neptune and orbits a planet similar in size to Jupiter.
Astronomers expect moons of planets like Jupiter and Saturn to have masses only a few percent of Earth. But this new exomoon was almost a thousand times larger than the corresponding bodies of our solar system – moons like Ganymede and Titan which orbit Jupiter and Saturn, respectively! This is the closest solar system to Earth containing ...www.cnn.com ...system -scn/index.html This is the closest solar system to Earth containing multiple planets - CNN Just 11 light years from earth is the GJ 15 A star system with two planets orbiting a red-dwarf star . This makes it the...!! It is very difficult to explain the formation of such a large satellite using current models of moon formation.
Cascades Of Gas Around Young Star Indicate Early Stages of Planet Formation - SpaceRef
An artist's conception of the disk of gas and dust rotating around the young star HD 163296. Gas can be seen cascading into gaps in the disk--likely indicating the formation of baby planets in these locations! This is the closest solar system to Earth containing ...fox61.com/2019/10/16/ ...containing...This is the closest solar system to Earth containing multiple planets Just 11 light years from earth is the GJ 15 A star system with two planets orbiting a red-dwarf star .!! CREDIT Image is by Robin Dienel, courtesy of the Carnegie Institution for Science.
What does a gestating baby planet look like? New research in Nature by a team including Carnegie's Jaehan Bae investigated the effects of three planets in the process of forming around a young star, revealing the source of their atmospheres.
In their youth, stars are surrounded by a rotating disk of gas and dust from which planets are born. Studying the behavior of the material that makes up these disks can reveal new details about planet formation, and about the evolution of a planetary system as a whole.
The disk around a young star called HD 163296 is known to include several rings and gaps. Using 3-D visualizations taken by the Atacama Large Millimeter/submillimeter Array, or ALMA--a radio telescope made up of 66 antennas--Bae teamed with University of Michigan's Richard Teague and Ted Bergin to determine the velocities of some of the gas spinning in this disk.
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.
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'Impossible' exoplanet and an alternate planet-formation theory | Space | EarthSky
The discovery of exoplanet GJ 3512b – a planet “too big for its star” – adds fuel to the competition between 2 theoretical models of how planets form. It suggests many more Jupiter-like planets are waiting to be found, orbiting nearby sunlike stars.
Notice the spiral structure here? This isn’t a galaxy; it’s a computer simulation of a newly forming solar system! This is the closest solar system to Earth containing ...system .html This makes it the closest solar system to Earth that contains multiple planets. The Alpha Centauri system is only 4.3 light years away but only contains one exoplanet, called Proxima B .!! It’s part of the disk instability model of how planets form, a model that’s been less accepted by astronomers – until now. A new discovery suggests this model may be correct! This is the closest solar system to Earth containing ...solar ...Just 11 light years from earth is the GJ 15 A star system with two planets orbiting a red-dwarf star. This makes it the closest solar system to Earth that contains multiple planets. The Alpha Centauri system is only 4.3 light years away but only contains one exoplanet, called Proxima B .!! If so, Jupiter-like worlds may be common around nearby sunlike stars. Image via astronomical theorist Alan Boss/ Carnegie Science .
Boss’s new work is supported by a September 27, 2019, paper, published in the peer-reviewed journal Science , reporting on the discovery of a new exoplanet labeled GJ 3512b . This confirmed, massive, Jupiter-like planet orbits a very low-mass red dwarf star. And thus this planet – sometimes called the planet that shouldn’t exist – belies the previously most-popular theory of planetary formation, which had suggested it was impossible for such a massive planet to form around such a small star. From the September 27 paper:
Ancient stars shed light on Earth's similarities to other planets | UCLA
Earth-like planets may be common in the universe, a new UCLA study implies. The team of astrophysicists and geochemists presents new evidence that the Earth is not unique. The study was published in the journal Science on Oct. 18.
“We have just raised the probability that many rocky planets are like the Earth, and there’s a very large number of rocky planets in the universe,” said co-author Edward Young, UCLA professor of geochemistry and cosmochemistry.
The scientists, led by Alexandra Doyle, a UCLA graduate student of geochemistry and astrochemistry, developed a new method to analyze in detail the geochemistry of planets outside of our solar system. Doyle did so by analyzing the elements in rocks from asteroids or rocky planet fragments that orbited six white dwarf stars.
“We’re studying geochemistry in rocks from other stars, which is almost unheard of,” Young said.
Just 11 light years from earth is a star system with two planets orbiting a red-dwarf star. This makes it the close… https://t.co/CGfegkO7Xq CNN Thu Oct 17 07:43:14 +0000 2019
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