Jan 16, 2019
The first compact solar system discovered was the Kepler-11 system. It’s a compact solar system, which means it has planets very close to its sun. There are five planets by its sun, closer to its Sun than Mercury is to ours.
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The first compact solar system discovered was the Kepler-11 system. It’s a compact solar system, which means it has planets very close to its sun. There are five planets by its sun, closer to its Sun than Mercury is to ours.
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We couldn’t let this (often commercial, hetero-normative) holiday pass by without sharing these adorkable exoplanet valentines from @nasa! The website has great scientifically accurate & detailed explanations of each one (after a couple clicks, e.g.), so even Pedantic Astronomer is a Romantic Astronomer today!
Via exoplanet scientist Dr. Elisa Quintana
--Emily
(NASA) Six worlds orbit Kepler-11, a sunlike star 2,000 light-years distant in the constellation Cygnus. The new discovery is based on data from NASA’s planet hunting Kepler spacecraft. Compared to our Solar System in this illustration, five of Kepler-11’s planets orbit closer to their parent star than the Mercury-Sun distance, with orbital periods ranging from 10 to 47 days. All six are larger than Earth and are likely composed of mixtures of rocky material and gas. Their presence, sizes, and masses have been determined by carefully watching the planets dim the light of Kepler-11 while transiting or crossing in front of the star itself. In fact, in August 2010, Kepler’s telescope and camera recorded a simultaneous transit of three of the planets in the system. As announced yesterday, using the transit technique the Kepler mission has now identified over 1200 exoplanet candidates in a field of view that covers only about 1/400th of the sky. The tantalizing result suggests there are many undiscovered planets orbiting the stars in our galaxy.
Kepler-11, a Sonata
Kepler-11 is a six planet system orbiting a distant star, recently identified as part of NASA's Kepler Project, the search for habitable planets around any star visibile from Earth.
The Kepler project works by essentially staring at any distant star and watching for the tiny flicker of darkness that happens when a planet orbits between the star and Earth. It's very similar to what we saw during the recent Transit of Venus.
Kepler-11 is a six planet system around a distant star! Astronomer Alex Parker has taken their orbits and distances from their star and given them each a note. Then, as they orbit, their note is played, with larger planets getting louder notes.
Of course, their orbits don't match up to our usual Earthly time signatures. Th resulting musical piece is something that teeters on the edge of resolution, but never quite getting there. Sort of like the search for exoplanets themselves.
Previously: This is a wonderful translation of astronomical data into music, and it reminds me of this hauntingly beautiful piece designed after our own solar system: Mandala. (Probably the best of its kind)
(↬ Bad Astronomy)
APOD: Six Worlds for Kepler-11
Illustration Credit: Tim Pyle, NASA
Explanation: Six worlds orbit Kepler-11, a sunlike star 2,000 light-years distant in the constellation Cygnus. The new discovery, based on data from NASA's planet hunting Kepler spacecraft, makes the Kepler-11 system the fullest exoplanetary system known. Compared to our Solar System in this illustration, five of Kepler-11's planets orbit closer to their parent star than the Mercury-Sun distance, with orbital periods ranging from 10 to 47 days. All six are larger than Earth and are likely composed of mixtures of rocky material and gas. Their presence, sizes, and masses have been determined by carefully watching the planets dim the light of Kepler-11 while transiting or crossing in front of the star itself. In fact, in August 2010, Kepler's telescope and camera recorded a simultaneous transit of three of the planets in the system. As announced yesterday, using the transit technique the Kepler mission has now identified over 1200 exoplanet candidates in a field of view that covers only about 1/400th of the sky. The tantalizing result suggests there are many undiscovered planets orbiting the stars in our galaxy.
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Scientists Discover Solar System With 6 Planets.
Scientists have found a new solar system so unlike our own that at first glance it seems almost impossible it could exist. The planets in the new system are packed together as densely as fans in a mosh pit. Five planets sit practically on top of each other as they circle their star, called Kepler-11; a sixth circles farther out. Two of the planets lie closer together than any other known pair of planets outside our solar system. "There's only word" to describe the new solar system, NASA's Jack Lissauer said at a news conference today, and it's "supercalifragilisticexpialidocious."Other astronomers tossed around words like "amazing" and "remarkable" to describe the new system, which lies about 2,000 light-years away from Earth in the constellation Cygnus. The Kepler-11 cluster is one of only a handful of solar systems known to include so many planets, and none of the others are understood as well.The six planets of Kepler-11 may be among the latest entries on the list of "extrasolar" planets -- those outside our own solar system -- but they won't be the last. Scientists today revealed that NASA's Kepler spacecraft, which found Kepler-11's planets, has to date spotted more than 1,200 potential planets. Astronomers need to confirm the existence of each of the new candidate planets, some of which will turn out to be false leads. But many others are likely to be verified as actual worlds orbiting other stars -- the first step, scientifically, toward figuring out where to look for life elsewhere in the universe. Five of those candidate planets are roughly the size of Earth and could contain liquid water, but it will take "patience ... and lots of money" to find out whether those five harbor life, NASA's William Borucki said. Even in the growing collection of new planets, the Kepler-11 system, which was described in a study published in Thursday's issue of the journal Nature, stands out. For starters there's its size. Kepler-11 boasts at least six planets, many more than most systems, and it may have even more planets that scientists have yet to detect. It was "shocking" to find six planets orbiting one star, the University of Florida's Eric Ford, an author of the Nature study, told AOL News. He described his team's reaction as the planet count went higher and higher: "There's a second. Oh, there's a third. Oh, there's a fourth! When does it stop?" Then there's the dense concentration of the planets. Five of Kepler-11's planets circle it more tightly than our sun is circled by its nearest planet, Mercury. The planets of Kepler-11 are squashed together so compactly that "at first glance, you think, 'Oh, my God, how is this possible?'" says astronomer Christophe Lovis of the University of Geneva, who was not associated with the new study. Then there's the planets' size. Five are larger than Earth but smaller than Uranus, the next-biggest planet orbiting the sun.In our solar system, "the largest terra incognita occurs between Earth and Uranus," and these new planets fill that gap, says astronomer Gregory Laughlin of the University of California, Santa Cruz, who was not an author of the new study. "You're seeing what planets look like in this strange regime between [Earth-like] planets and what we call the ice giants." The Kepler-11 grouping is so unusual that it can't be explained by the old theories of how solar systems are born, says NASA's Lissauer, leader of the new study and a specialist in planetary formation. "Something a little different has to be going on here," he says. "This is sending me back to the drawing board."
EARTH-SIZE PLANETS IN HABITABLE ZONE FOUND
NASA's Kepler mission has discovered its first Earth-size planet candidates and its first candidates in the habitable zone, a region where liquid water could exist on a planet's surface. Five of the potential planets are near Earth-size and orbit in the habitable zone of smaller, cooler stars than our sun. Candidates require follow-up observations to verify they are actual planets. Kepler also found six confirmed planets orbiting a sun-like star, Kepler-11. This is the largest group of transiting planets orbiting a single star yet discovered outside our solar system. "In one generation we have gone from extraterrestrial planets being a mainstay of science fiction, to the present, where Kepler has helped turn science fiction into today's reality," said NASA Administrator Charles Bolden. "These discoveries underscore the importance of NASA's science missions, which consistently increase understanding of our place in the cosmos."
Amplify’d from www.nasa.gov
Scientists using NASA's Kepler, a space telescope, recently discovered six planets made of a mix of rock and gases orbiting a single sun-like star, known as Kepler-11, which is located approximately 2,000 light years from Earth. "The Kepler-11 planetary system is amazing," said Jack Lissauer, a planetary scientist and a Kepler science team member at NASA's Ames Research Center, Moffett Field, Calif. "It’s amazingly compact, it’s amazingly flat, there’s an amazingly large number of big planets orbiting close to their star - we didn’t know such systems could even exist."
In other words, Kepler-11 has the fullest, most compact planetary system yet discovered beyond our own. "Few stars are known to have more than one transiting planet, and Kepler-11 is the first known star to have more than three," said Lissauer. "So we know that systems like this are not common. There’s certainly far fewer than one percent of stars that have systems like Kepler-11. But whether it’s one in a thousand, one in ten thousand or one in a million, that we don’t know, because we only have observed one of them." All of the planets orbiting Kepler-11, a yellow dwarf star, are larger than Earth, with the largest ones being comparable in size to Uranus and Neptune. The innermost planet, Kepler-11b, is ten times closer to its star than Earth is to the sun. Moving outwards, the other planets are Kepler-11c, Kepler-11d, Kepler-11e, Kepler-11f, and the outermost planet, Kepler-11g, which is twice as close to its star than Earth is to the sun.
"By measuring the sizes and masses of the five inner planets, we have determined they are among the smallest confirmed exoplanets, or planets beyond our solar system," said Lissauer. "These planets are mixtures of rock and gases, possibly including water. The rocky material accounts for most of the planets' mass, while the gas takes up most of their volume."
Read more at www.nasa.gov
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NASA scientists discover planetary system with six planets
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