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Inhalt von "http://feeds.sciencedaily.com/sciencedaily/space_time/extrasolar_planets"

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Extrasolar Planets News -- ScienceDaily

Extrasolar Planet News. Astronomers discover extrasolar planets in a nearby star system. Could extrasolar planets support life? Images, full-text articles. Free.

Double star system flips planet-forming disk into pole position
Montag, 14.01.2019, 17:42:31 Uhr
Astronomers have found the first confirmed example of a double star system that has flipped its surrounding disc to a position that leaps over the orbital plane of those stars.
Nature's magnifying glass reveals unexpected intermediate mass exoplanets
Dienstag, 08.01.2019, 20:13:39 Uhr
Astronomers have found a new exoplanet that could alter the standing theory of planet formation. With a mass that's between that of Neptune and Saturn, and its location beyond the 'snow line' of its host star, an alien world of this scale was supposed to be rare.
TESS discovers its third new planet, with longest orbit yet
Dienstag, 08.01.2019, 00:57:52 Uhr
NASA's Transiting Exoplanet Survey Satellite, TESS, has discovered a third small planet outside our solar system, scientists report.
Early protostar already has a warped disk
Dienstag, 01.01.2019, 15:44:56 Uhr
Using observations from the ALMA radio observatory in Chile, researchers have observed, for the first time, a warped disk around an infant protostar that formed just several tens of thousands of years ago. This implies that the misalignment of planetary orbits in many planetary systems -- including our own -- may be caused by distortions in the planet-forming disk early in their existence.
Baby star's fiery tantrum could create the building blocks of planets
Freitag, 21.12.2018, 18:37:29 Uhr
A massive stellar flare on a baby star has been spotted by astronomers, shedding light on the origins of potentially habitable exoplanets.
Sapphires and rubies in the sky
Mittwoch, 19.12.2018, 18:42:41 Uhr
Researchers have discovered a new, exotic class of planets outside our solar system. These so-called super-Earths were formed at high temperatures close to their host star and contain high quantities of calcium, aluminium and their oxides -- including sapphire and ruby.
Newly discovered adolescent star seen undergoing 'growth spurt'
Mittwoch, 19.12.2018, 17:55:27 Uhr
Astronomers have discovered a young star undergoing a rare growth spurt -- giving a fascinating glimpse into the development of these distant stellar objects.
Most-distant solar system object ever observed
Montag, 17.12.2018, 18:00:54 Uhr
A team of astronomers has discovered the most-distant body ever observed in our solar system. It is the first known solar system object that has been detected at a distance that is more than 100 times farther than Earth is from the sun.
Alien imposters: Planets with oxygen don't necessarily have life
Montag, 17.12.2018, 16:58:48 Uhr
Lab simulations nix the common wisdom that atmospheric oxygen and organic compounds are good evidence that a planet harbors life.
Narrowing the universe in the search for life
Montag, 17.12.2018, 16:18:09 Uhr
In the search for life on other planets, scientists traditionally have looked for a world with water. But a geophysicist now wonders if we should look to rocks instead.
A young star caught forming like a planet
Freitag, 14.12.2018, 15:38:27 Uhr
Astronomers have captured one of the most detailed views of a young star taken to date, and revealed an unexpected companion in orbit around it.
Where did the hot Neptunes go? A shrinking planet holds the answer
Donnerstag, 13.12.2018, 16:13:25 Uhr
'Where did the hot Neptunes go?' This is the question astronomers have been asking for a long time, faced with the mysterious absence of planets the size of Neptune. Researchers have just discovered that one of these planets is losing its atmosphere at a frantic pace. This observation strengthens the theory that hot Neptunes have lost much of their atmosphere and turned into smaller planets called super-Earths.
Large population of potential young planets found in distant planetary systems
Mittwoch, 12.12.2018, 20:46:31 Uhr
Astronomers used the powerful ALMA telescope to discover that in other parts of the Milky Way Galaxy (seen here) there is potentially a large population of young planets -- similar in mass to Neptune or Jupiter -- at wide-orbit that are not detectable by other current planet searching techniques.
Evidence for carbon-rich surface on Ceres
Montag, 10.12.2018, 17:58:21 Uhr
Astronomers have concluded that the surface of dwarf planet Ceres is rich in organic matter. Data from NASA's Dawn spacecraft indicate that Ceres's surface may contain several times the concentration of carbon than is present in the most carbon-rich, primitive meteorites found on Earth.
Unknown treasure trove of planets found hiding in dust
Freitag, 07.12.2018, 17:27:17 Uhr
The first unbiased survey of protoplanetary disks surrounding young stars in the Taurus star-forming region turned up a higher-than-expected number of disks with features suggesting nascent planets, according to a new study.
An exoplanet inflated like a balloon
Donnerstag, 06.12.2018, 20:12:04 Uhr
Although helium is a rare element on Earth, it is ubiquitous in the universe. It is, after hydrogen, the main component of stars and gaseous giant planets. Despite its abundance, helium was only detected recently in the atmosphere of a gaseous giant by an international team. The team has observed for the first time how this gas escapes from the overheated atmosphere of an exoplanet, literally inflated with helium.
Mantle neon illuminates Earth's formation
Mittwoch, 05.12.2018, 19:41:20 Uhr
The Earth formed relatively quickly from the cloud of dust and gas around the Sun, trapping water and gases in the planet's mantle, based on neon isotopes from the depths of the Earth and deep space. Apart from settling Earth's origins, the work could help in identifying extrasolar systems that could support habitable planets.
Combination of space-based and ground-based telescopes reveals more than 100 exoplanets
Montag, 03.12.2018, 17:16:12 Uhr
Astronomers using a combination of ground and space based telescopes have reported more than 100 extrasolar planets (exoplanets) in only three months. These planets are quite diverse and expected to play a large role in developing the research field of exoplanets and life in the Universe.
Climate of small star TRAPPIST 1's seven intriguing worlds
Mittwoch, 21.11.2018, 20:24:44 Uhr
New research from astronomers gives updated climate models for the seven planets around the star TRAPPIST-1. The work also could help astronomers more effectively study planets around stars unlike our sun, and better use the resources of the James Webb Space Telescope.
Exoplanet stepping stones
Dienstag, 20.11.2018, 21:59:32 Uhr
New observations of a young gas giant demonstrate the power of a ground-based method for searching for signatures of life.
Cold Super-Earth found orbiting closest single star to Sun
Mittwoch, 14.11.2018, 19:20:40 Uhr
The nearest single star to the Sun hosts an exoplanet at least 3.2 times as massive as Earth -- a so-called super-Earth. One of the largest observing campaigns to date using data from a world-wide array of telescopes has revealed this frozen, dimly lit world. The newly discovered planet is the second-closest known exoplanet to the Earth. Barnard's star is the fastest moving star in the night sky.
NASA retires Kepler Space Telescope
Mittwoch, 31.10.2018, 14:25:08 Uhr
After nine years in deep space collecting data, NASA's Kepler space telescope has run out of fuel needed for further science operations. NASA has decided to retire the spacecraft within its current, safe orbit, away from Earth. Kepler leaves a legacy of more than 2,600 planet discoveries from outside our solar system, many of which could be promising places for life.
Some planetary systems just aren't into heavy metal
Mittwoch, 24.10.2018, 19:12:50 Uhr
Researchers have discovered that compact, multiple-planet systems are more likely to form around stars that have lower amounts of heavy elements than our own Sun.
Superflares from young red dwarf stars imperil planets
Donnerstag, 18.10.2018, 20:12:04 Uhr
Flares from the youngest red dwarfs surveyed are 100 to 1,000 times more energetic than when the stars are older. This younger age is when terrestrial planets are forming around their stars.
Double dust ring test could spot migrating planets
Mittwoch, 17.10.2018, 17:10:14 Uhr
Astrophysicist now have a way of finally telling whether newly forming planets are migrating within the disc of dust and gas that typically surrounds stars or whether they are simply staying put in the same orbit around the star.
Giant planets around young star raise questions about how planets form
Montag, 15.10.2018, 16:45:31 Uhr
Researchers have identified a young star with four Jupiter and Saturn-sized planets in orbit around it, the first time that so many massive planets have been detected in such a young system. The system has also set a new record for the most extreme range of orbits yet observed: the outermost planet is more than a thousand times further from the star than the innermost one, which raises interesting questions about how such a system might have formed.
Astronomers find first compelling evidence for a moon outside our solar system
Mittwoch, 03.10.2018, 20:29:31 Uhr
On the hunt for distant worlds, researchers have identified an exomoon candidate around the transiting exoplanet Kepler-1625b that indicates the presence of a previously unknown gas-giant moon.
New extremely distant solar system object found during hunt for Planet X
Dienstag, 02.10.2018, 16:29:08 Uhr
Astronomers have discovered a new extremely distant object far beyond Pluto with an orbit that supports the presence of an even-farther-out, Super-Earth or larger Planet X.
Astronomers use Earth's natural history as guide to spot vegetation on new worlds
Montag, 24.09.2018, 23:44:46 Uhr
By looking at Earth's full natural history and evolution, astronomers may have found a template for vegetation fingerprints -- borrowing from epochs of changing flora -- to determine the age of habitable exoplanets.
Pluto should be reclassified as a planet, experts say
Freitag, 07.09.2018, 17:04:22 Uhr
The reason Pluto lost its planet status is not valid, according to new research.
New exoplanet found very close to its star
Mittwoch, 05.09.2018, 22:19:34 Uhr
Using data from NASA's Kepler Space Telescope, an international team has discovered a new exoplanet twice the size of Earth. It orbits its star every six days and is thus very close to it, about 10 times closer than Mercury is to the Sun.
Water worlds could support life, study says
Freitag, 31.08.2018, 14:35:39 Uhr
The conditions for life surviving on planets entirely covered in water are more fluid than previously thought, opening up the possibility that water worlds could be habitable, according to a new article.
Stellar 'swarms' help astronomers understand the evolution of stars
Dienstag, 28.08.2018, 17:47:57 Uhr
Researchers have identified nearly a thousand potential members and 31 confirmed members of stellar associations -- stars of similar ages and compositions that are drifting together through space -- in our own corner of the Milky Way. Their research could help astronomers understand the evolution of stars and the properties of future exoplanet discoveries.
Jupiter had growth disorders
Montag, 27.08.2018, 17:08:40 Uhr
Researchers can now show how Jupiter was formed. Data collected from meteorites had indicated that the growth of the giant planet had been delayed for two million years. Now the researchers have found an explanation: Collisions with kilometer-sized blocks generated high energy, which meant that in this phase hardly any accretion of gas could take place and the planet could only grow slowly.
Water-worlds are common: Exoplanets may contain vast amounts of water
Samstag, 18.08.2018, 17:57:58 Uhr
Scientists have shown that water is likely to be a major component of those exoplanets (planets orbiting other stars) which are between two to four times the size of Earth. It will have implications for the search of life in our Galaxy.
Study of material surrounding distant stars shows Earth's ingredients 'pretty normal'
Donnerstag, 16.08.2018, 01:05:30 Uhr
The Earth's building blocks seem to be built from 'pretty normal' ingredients, according to researchers working with the world's most powerful telescopes. Scientists have measured the compositions of 18 different planetary systems from up to 456 light years away and compared them to ours, and found that many elements are present in similar proportions to those found on Earth. This will have implications for finding Earth-like bodies elsewhere.
Iron and titanium in the atmosphere of an exoplanet
Mittwoch, 15.08.2018, 19:05:55 Uhr
Exoplanets can orbit close to their host star. When the host star is much hotter than our sun, then the exoplanet becomes as hot as a star. The hottest 'ultra-hot' planet was discovered last year. A team has now discovered the presence of iron and titanium vapors in the atmosphere of this planet. This detection was made possible by the surface temperature of this planet, which reaches more than 4,000 degrees.
Ultrahot planets have starlike atmospheres
Donnerstag, 09.08.2018, 20:45:18 Uhr
An unusual kind of star-planet hybrid atmosphere is emerging from studies of ultrahot planets orbiting close to other stars.
Largest haul of extrasolar planets
Dienstag, 07.08.2018, 15:51:23 Uhr
Forty-four planets in planetary systems beyond our own have been unveiled in one go, dwarfing the usual number of confirmations from extrasolar surveys, which is typically a dozen or less. The findings will improve our models of planetary systems and may help researchers investigate exoplanet atmospheres. Novel techniques developed to validate the find could hugely accelerate the confirmation of more extrasolar planet candidates.
VLA detects possible extrasolar planetary-mass magnetic powerhouse
Freitag, 03.08.2018, 16:33:36 Uhr
Astronomers have detected a possible planetary-mass object with a surprisingly powerful magnetic field some 20 light-years from Earth. It can help scientists better understand magnetic processes on stars and planets.
Exoplanets where life could develop as it did on Earth
Mittwoch, 01.08.2018, 23:20:56 Uhr
Scientists have identified a group of planets outside our solar system where the same chemical conditions that may have led to life on Earth exist.
Astronomers assemble 'light-fingerprints' to unveil mysteries of the cosmos
Dienstag, 31.07.2018, 16:42:11 Uhr
Earthbound detectives rely on fingerprints to solve their cases; now astronomers can do the same, using 'light-fingerprints' instead of skin grooves to uncover the mysteries of exoplanets.
Plate tectonics not needed to sustain life
Montag, 30.07.2018, 23:28:14 Uhr
There may be more habitable planets in the universe than we previously thought, according to geoscientists, who suggest that plate tectonics -- long assumed to be a requirement for suitable conditions for life -- are in fact not necessary.
New family photos of Mars and Saturn from Hubble
Donnerstag, 26.07.2018, 22:10:31 Uhr
In summer 2018 the planets Mars and Saturn are, one after the other, in opposition to Earth. During this event the planets are relatively close to Earth, allowing astronomers to observe them in greater detail. Hubble took advantage of this preferred configuration and imaged both planets to continue its long-standing observation of the outer planets in the solar system.
More mysteries of metallic hydrogen
Dienstag, 24.07.2018, 17:02:38 Uhr
Liquid metallic hydrogen is not present naturally on Earth and has only been created in a handful of places. Now scientists are researching the properties of liquid metallic hydrogen to understand how planets both inside and outside our solar system form magnetic shields.
Finding a planet with a 10 year orbit in just a few months
Mittwoch, 18.07.2018, 15:25:07 Uhr
To discover the presence of a planet around stars, astronomers wait until it has completed three orbits. However, this effective technique has its drawbacks since it cannot confirm the presence of planets at relatively long periods. To overcome this obstacle, astronomers have developed a method that makes it possible to ensure the presence of a planet in a few months, even if it takes 10 years to circle its star.
A dozen new moons of Jupiter discovered, including one 'oddball'
Dienstag, 17.07.2018, 16:12:56 Uhr
Twelve new moons orbiting Jupiter have been found -- 11 'normal' outer moons, and one that they're calling an 'oddball.' Astronomers first spotted the moons in the spring of 2017 while they were looking for very distant solar system objects as part of the hunt for a possible massive planet far beyond Pluto.
Astronomers find a famous exoplanet's doppelganger
Dienstag, 17.07.2018, 15:48:07 Uhr
A new planet has been imaged, and it appears nearly identical to one of the best studied gas-giant planets. But this doppelganger differs in one very important way: Its origin. One object has long been known: the 13-Jupiter-mass planet beta Pictoris b, one of the first planets discovered by direct imaging, back in 2009. The new object, dubbed 2MASS 0249 c, has the same mass, brightness, and spectrum as beta Pictoris b.
Rocky planet neighbor looks familiar, but is not Earth's twin
Dienstag, 10.07.2018, 18:28:24 Uhr
Last autumn, the world was excited by the discovery of an exoplanet called Ross 128 b, which is just 11 light years away from Earth. New work has for the first time determined detailed chemical abundances of the planet's host star, Ross 128.
'Cataclysmic' collision shaped Uranus' evolution
Montag, 02.07.2018, 23:09:03 Uhr
Uranus was hit by a massive object roughly twice the size of Earth that caused the planet to tilt and could explain its freezing temperatures, according to new research.
First confirmed image of newborn planet caught with ESO's VLT
Montag, 02.07.2018, 15:40:40 Uhr
SPHERE, a planet-hunting instrument on ESO's Very Large Telescope, has captured the first confirmed image of a planet caught in the act of forming in the dusty disc surrounding a young star. The young planet is carving a path through the primordial disc of gas and dust around the very young star PDS 70. The data suggest that the planet's atmosphere is cloudy.
More clues that Earth-like exoplanets are indeed Earth-like
Donnerstag, 28.06.2018, 21:17:08 Uhr
Researchers suggest that two Earth-like exoplanets (Kepler-186f and 62f) have very stable axial tilts, much like the Earth, making it likely that each has regular seasons and a stable climate.
Scientists develop new strategies to discover life beyond earth
Donnerstag, 28.06.2018, 16:51:13 Uhr
Scientists now think we may be able to detect signs of life on planets beyond our solar system in the next few decades, but to do so new tools and techniques will be required. Researchers from around the world just produced a roadmap to develop the techniques that may finally answer the question of whether we are alone in the Universe.
Scientists developing guidebook for finding life beyond Earth
Dienstag, 26.06.2018, 01:26:48 Uhr
Some of the leading experts in the field, including a UC Riverside team of researchers, have written a major series of review papers on the past, present, and future of the search for life on other planets.
Nearly 80 exoplanet candidates identified in record time
Donnerstag, 21.06.2018, 18:19:01 Uhr
Scientists have analyzed data from K2, the follow-up mission to NASA's Kepler Space Telescope, and have discovered a trove of possible exoplanets amid some 50,000 stars. The scientists report the discovery of nearly 80 new planetary candidates, including a particular standout: a likely planet that orbits the star HD 73344, which would be the brightest planet host ever discovered by the K2 mission.
Hunting molecules to find new planets
Montag, 18.06.2018, 17:30:30 Uhr
It's been impossible to obtain images of an exoplanet, so dazzling is the light of its star. However, astronomers have the idea of detecting molecules that are present in the planet's atmosphere in order to make it visible, provided that these same molecules are absent from its star. Thanks to this innovative technique, the device is sensitive to the selected molecules, making the star invisible and allowing the astronomers to observe the planet.
Distant moons may harbor life
Freitag, 15.06.2018, 03:36:00 Uhr
Researchers have identified more than 100 giant planets that potentially host moons capable of supporting life. Their work will guide the design of future telescopes that can detect these potential moons and look for tell-tale signs of life, called biosignatures, in their atmospheres.
Trio of infant planets discovered around newborn star
Mittwoch, 13.06.2018, 16:19:28 Uhr
Two independent teams of astronomers have uncovered convincing evidence that three young planets are in orbit around an infant star known as HD 163296. Using a new planet-finding strategy, the astronomers identified three discrete disturbances in a young star's gas-filled disk: the strongest evidence yet that newly formed planets are in orbit there.
Multiple alkali metals in unique exoplanet
Donnerstag, 07.06.2018, 17:27:35 Uhr
Scientists have observed a rare gaseous planet, with partly clear skies, and strong signatures of alkali metals in its atmosphere.
System with three Earth-sized planets discovered
Donnerstag, 07.06.2018, 17:27:27 Uhr
Today marks the discovery of two new planetary systems, one of them hosting three planets with the same size of the Earth.

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