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Astronomy News -- ScienceDaily
Astronomy news. New! Earth-like extrasolar planet found; double helix nebula; supermassive black holes, astronomy articles, astronomy pictures. Updated daily.
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.
Supermassive black holes and supercomputers
Mittwoch, 17.10.2018, 14:08:07 Uhr
The universe's deep past is beyond the reach of even the mighty Hubble Space Telescope. But a new review explains how creation of the first stars and galaxies is nevertheless being mapped in detail, with the aid of computer simulations and theoretical models -- and how a new generation of supercomputers and software is being built that will fill in the gaps.
All in the family: Kin of gravitational wave source discovered
Dienstag, 16.10.2018, 19:20:24 Uhr
According to new research, an object named GRB150101B -- first reported as a gamma-ray burst in 2015 -- shares remarkable similarities with GW170817, the neutron star merger discovered by LIGO and observed by multiple light-gathering telescopes in 2017. The new analysis suggests that these two separate objects may in fact be directly related.
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.
Death of a massive star and birth of compact neutron star binary
Donnerstag, 11.10.2018, 20:31:30 Uhr
The unexpectedly gentle death of a massive star suggests that it was being robbed by a dense companion lurking out of sight.
New telescope almost doubles known number of mysterious 'fast radio bursts'
Mittwoch, 10.10.2018, 19:23:03 Uhr
Astronomers have nearly doubled the known number of 'fast radio bursts'-- powerful flashes of radio waves from deep space. The team's discoveries include the closest and brightest fast radio bursts ever detected and they have proved that fast radio bursts are coming from the other side of the Universe rather than from our own galactic neighborhood.
Mystery at the center of the Milky Way solved
Mittwoch, 10.10.2018, 15:36:25 Uhr
Astronomers have now found the explanation to a recent mystery at the center of the Milky Way galaxy: the high levels of scandium discovered last spring near the galaxy's giant black hole were in fact an optical illusion.
Icy warning for space missions to Jupiter's moon
Dienstag, 09.10.2018, 16:24:40 Uhr
A location often earmarked as a potential habitat for extra-terrestrial life could prove to be a tricky place for spacecraft to land, new research has revealed.
The threat of Centaurs for the Earth
Dienstag, 09.10.2018, 16:24:37 Uhr
Astrophysicists have investigated the long-term path development of Centaurs -- small icy bodies that orbit the Sun between Jupiter and Neptune.
When is a nova not a nova? When a white dwarf and a brown dwarf collide
Montag, 08.10.2018, 14:35:04 Uhr
Astronomers have found for the first time that a white dwarf and a brown dwarf collided in a 'blaze of glory' that was witnessed on Earth in 1670.
Lunar craters named in honor of Apollo 8
Freitag, 05.10.2018, 17:14:34 Uhr
The Working Group for Planetary System Nomenclature of the International Astronomical Union has today officially approved the naming of two craters on the Moon to commemorate the 50th anniversary of the Apollo 8 mission. The names are Anders's Earthrise and 8 Homeward.
Surprising chemical complexity of Saturn's rings changing planet's upper atmosphere
Donnerstag, 04.10.2018, 20:39:37 Uhr
A new study based on data from the final orbits last year of NASA's Cassini spacecraft shows the rings of Saturn -- some of the most visually stupendous objects in the universe -- are far more chemically complicated than previously was understood.
Astronomers discover sonic boom from powerful unseen explosion
Donnerstag, 04.10.2018, 19:18:31 Uhr
A team of astronomers has detected the sonic boom from an immensely powerful cosmic explosion, even though the explosion itself was totally unseen. The titanic eruption, known as a Gamma Ray Burst (GRB), was generated by the collapse of a massive star in a galaxy nearly 300 million light-years from Earth.
Observations challenge cosmological theories
Donnerstag, 04.10.2018, 19:18:28 Uhr
Since the big bang, fewer galaxy clusters have formed over time than was actually expected. Physicists from the have now confirmed this phenomenon. For the next years the researchers will analyze their data in even greater detail. This will put them in a position to confirm whether the theories considered valid today need to be reworked.
Newly detected microquasar gamma-rays 'call for new ideas'
Donnerstag, 04.10.2018, 19:18:10 Uhr
The first-ever detection of highly energetic radiation from a microquasar has astrophysicists scrambling for new theories to explain the extreme particle acceleration. A microquasar is a black hole that gobbles up debris from a nearby companion star and blasts out powerful jets of material.
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.
Mountaintop observatory sees gamma rays from exotic Milky Way object
Mittwoch, 03.10.2018, 19:44:25 Uhr
The High-Altitude Water Cherenkov Gamma-Ray Observatory (HAWC) collaboration has detected highly energetic light coming from a microquasar -- a black hole that gobbles up stuff from a companion star and blasts out powerful jets of material. Data analysis indicates that electron acceleration and collisions at the ends of the microquasar's jets produced powerful gamma rays. Multi-wavelength messengers from this unusual microquasar may offer scientists a glimpse into more extreme events happening in distant galaxies.
New simulation sheds light on spiraling supermassive black holes
Dienstag, 02.10.2018, 17:40:36 Uhr
A new model is bringing scientists a step closer to understanding the kinds of light signals produced when two supermassive black holes, which are millions to billions of times the mass of the Sun, spiral toward a collision.
New tool helps scientists better target the search for alien life
Dienstag, 02.10.2018, 17:39:56 Uhr
Scientists have developed a novel approach that boosts the chances of finding extraterrestrial intelligence in our galaxy. The method uses probability theory to calculate the possibility of detecting an extraterrestrial signal (if there is one) at a given distance from Earth.
Gaia spots stars flying between galaxies
Dienstag, 02.10.2018, 16:30:00 Uhr
A team of astronomers using the latest set of data from ESA's Gaia mission to look for high-velocity stars being kicked out of the Milky Way were surprised to find stars instead sprinting inwards -- perhaps from another galaxy.
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.
Animal study suggests deep space travel may significantly damage GI function in astronauts
Dienstag, 02.10.2018, 16:27:27 Uhr
Deep space bombardment by galactic cosmic radiation (GCR) could significantly damage gastrointestinal (GI) tissue leading to long-term functional alterations, according to a new study, which also raises concern about high risk of tumor development in stomach and colon.
Black holes ruled out as universe's missing dark matter
Dienstag, 02.10.2018, 16:27:23 Uhr
If dark matter consists of a plethora of primordial black holes, then their gravitational lensing -- magnifying and brightening distant objects -- should be detectable. Physicists analyzed 740 known supernovas to find the handful that should have been magnified and brightened by black holes, and found none. This puts a strong upper limit, 40, on the percent of dark matter that can consist of black holes, and suggests that none of it is.
Experimental Martian dirt: $20 a kilogram, plus shipping
Freitag, 28.09.2018, 22:22:42 Uhr
A team of astrophysicists has developed a scientifically based, standardized method for creating Martian and asteroid soil known as simulants.
Simulations uncover why some supernova explosions produce so much manganese and nickel
Donnerstag, 27.09.2018, 15:10:05 Uhr
Researchers have found white dwarf stars with masses close to the maximum stable mass are likely to produce large amounts of manganese, iron, and nickel after it orbits another star and explodes.
By Jove! Methane's effects on sunlight vary by region
Mittwoch, 26.09.2018, 20:08:07 Uhr
Solar energy absorption by methane is 10 times stronger over desert regions such as the Sahara Desert and Arabian Peninsula than elsewhere on Earth, and nearly three times more powerful in the presence of clouds. Researchers came to this conclusion after evaluating observations of Jupiter and Saturn's moon Titan.
How a tiny Curiosity motor identified a massive Martian dust storm
Mittwoch, 26.09.2018, 20:07:12 Uhr
When dust filled the Martian atmosphere during the recent planet-wide dust storm, observations were plentiful -- even from unlikely instruments.
Hyper Suprime-Cam survey maps dark matter in the universe
Mittwoch, 26.09.2018, 14:27:11 Uhr
Today, astronomers have released the deepest wide field map of the three-dimensional distribution of matter in the universe ever made and increased the precision of constraints for dark energy with the Hyper Suprime-Cam survey (HSC).
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.
Martian moon may have come from impact on home planet
Montag, 24.09.2018, 20:40:35 Uhr
Phobos, the larger of Mars' two tiny satellites, is the darkest moon in the solar system. This dark aspect inspired the hypothesis that the close-orbiting moon may be a captured asteroid, but its orbital dynamics seemed to disagree. A new study suggests Phobos' composition may be more like the volcanic crust of the Red Planet than it appears, consistent with an origin for the moon in an ancient, violent impact on Mars.
Astrophysicists measure precise rotation pattern of sun-like stars for the first time
Donnerstag, 20.09.2018, 22:09:10 Uhr
Scientists have measured the differential rotation on Sun-like stars for the first time, and their findings challenge current science on how stars rotate.
Matter falling into a black hole at 30 percent of the speed of light
Donnerstag, 20.09.2018, 17:55:37 Uhr
Astronomers report the first detection of matter falling into a black hole at 30% of the speed of light, located in the center of the billion-light year distant galaxy PG211 143. The team used data from the European Space Agency's X-ray observatory XMM-Newton to observe the black hole.
Gaia hints at our Galaxy’s turbulent life
Mittwoch, 19.09.2018, 19:30:35 Uhr
Our Milky Way galaxy is still enduring the effects of a near collision that set millions of stars moving like ripples on a pond, the Gaia star mapping mission has shown.
Looking back in time to watch for a different kind of black hole
Mittwoch, 19.09.2018, 16:10:01 Uhr
A simulation has suggested what astronomers should look for if they search the skies for a direct collapse black hole in its early stages.
Magellanic Clouds duo may have been a trio
Dienstag, 18.09.2018, 15:08:58 Uhr
Two of the closest galaxies to the Milky Way -- the Large and Small Magellanic Clouds -- may have had a third companion, astronomers believe. New research describes how another 'luminous' galaxy was likely engulfed by the Large Magellanic Cloud some three to five billion years ago.
NASA's TESS shares first science image in hunt to find new worlds
Montag, 17.09.2018, 21:36:50 Uhr
NASA's Transiting Exoplanet Survey Satellite, which began science operations in July, has released its first full frame image using all four of its cameras.
Never-before-seen features found around a neutron star
Montag, 17.09.2018, 17:43:09 Uhr
An unusual infrared light emission from a nearby neutron star detected by NASA's Hubble Space Telescope could indicate new features never before seen.
Ice volcano activity on dwarf planet Ceres
Montag, 17.09.2018, 17:15:37 Uhr
Ice volcanoes on the dwarf planet Ceres generate enough material to fill one movie theater each year, new calculations show.
When is a star not a star?
Montag, 17.09.2018, 16:13:01 Uhr
The line that separates stars from brown dwarfs may soon be clearer. Astronomers demonstrate that brown dwarfs can be more massive than astronomers previously thought.
BUFFALO charges towards the earliest galaxies
Donnerstag, 13.09.2018, 17:39:08 Uhr
The NASA/ESA Hubble Space Telescope has started a new mission to shed light on the evolution of the earliest galaxies in the Universe. The BUFFALO survey will observe six massive galaxy clusters and their surroundings. The first observations show the galaxy cluster Abell 370 and a host of magnified, gravitationally lensed galaxies around it.
VLBA measures asteroid's characteristics
Donnerstag, 13.09.2018, 17:38:17 Uhr
Astronomers took advantage of a celestial alignment to make a novel and creative radio observation yielding information about the size, shape, and orbit of an asteroid.
Stunning details of spiral galaxy NGC 3981
Mittwoch, 12.09.2018, 14:13:01 Uhr
FORS2, an instrument mounted on ESO's Very Large Telescope, has observed the spiral galaxy NGC 3981 in all its glory. The image was captured as part of the ESO Cosmic Gems Programme, which makes use of the rare occasions when observing conditions are not suitable for gathering scientific data.
Astronomers witness birth of new star from stellar explosion
Mittwoch, 12.09.2018, 14:12:47 Uhr
Astronomers have observed a new phenomena in the aftermath of a stellar explosion.
Evidence of early planetary shake-up
Montag, 10.09.2018, 17:12:35 Uhr
Scientists have studied an unusual pair of asteroids and discovered that their existence points to an early planetary rearrangement in our solar system.
Legacy of NASA's Dawn, near the end of its mission
Freitag, 07.09.2018, 23:59:52 Uhr
NASA's Dawn mission is drawing to a close after 11 years of breaking new ground in planetary science, gathering breathtaking imagery, and performing unprecedented feats of spacecraft engineering.
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.
Galactic 'wind' stifling star formation is most distant yet seen
Donnerstag, 06.09.2018, 20:15:43 Uhr
For the first time, a powerful 'wind' of molecules has been detected in a galaxy located 12 billion light-years away. Probing a time when the universe was less than 10 percent of its current age, astronomers sheds light on how the earliest galaxies regulated the birth of stars to keep from blowing themselves apart.
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.
Saturn's famous hexagon may tower above the clouds
Mittwoch, 05.09.2018, 21:54:44 Uhr
The long-lived international Cassini mission has revealed a surprising feature emerging at Saturn's northern pole as it nears summertime: a warming, high-altitude vortex with a hexagonal shape, akin to the famous hexagon seen deeper down in Saturn's clouds.
Radio observations confirm superfast jet of material from neutron star merger
Mittwoch, 05.09.2018, 19:18:34 Uhr
The supersharp radio 'vision' of a continent-wide collection of radio telescopes has answered an outstanding question about the aftermath of a merger of two neutron stars.
Telescope maps cosmic rays in Large and Small Magellanic Clouds
Dienstag, 04.09.2018, 17:47:30 Uhr
A radio telescope in outback Western Australia has been used to observe radiation from cosmic rays in two neighbouring galaxies, showing areas of star formation and echoes of past supernovae.
Veiled supernovae provide clue to stellar evolution
Dienstag, 04.09.2018, 16:32:51 Uhr
At the end of its life, a red supergiant star explodes in a hydrogen-rich supernova. By comparing observation results to simulation models, an international research team found that in many cases this explosion takes place inside a thick cloud of circumstellar matter shrouding the star. This result completely changes our understanding of the last stage of stellar evolution.
Falling stars hold clue for understanding dying stars
Montag, 03.09.2018, 19:59:57 Uhr
An international team of researchers has proposed a new method to investigate the inner workings of supernovae explosions. This new method uses meteorites and is unique in that it can determine the contribution from electron anti-neutrinos, enigmatic particles which can't be tracked through other means.
Little star sheds light on young planets
Montag, 03.09.2018, 16:17:49 Uhr
Astronomers discovered a dense disk of material around a young star, which may be a precursor to a planetary system. Their research could vastly improve models of how solar systems form, which would tell us more about our own place in the cosmos.
Solar eruptions may not have slinky-like shapes after all
Donnerstag, 30.08.2018, 17:30:41 Uhr
As the saying goes, everything old is new again. While the common phrase often refers to fashion, design, or technology, scientists have found there is some truth to this mantra even when it comes to research. Revisiting some older data, the researchers discovered new information about the shape of coronal mass ejections (CMEs) -- large-scale eruptions of plasma and magnetic field from the sun -- that could one day help protect satellites in space as well as the electrical grid on Earth.
How a NASA scientist looks in the depths of the great red spot to find water on Jupiter
Mittwoch, 29.08.2018, 21:38:48 Uhr
One critical question has bedeviled astronomers for generations: Is there water deep in Jupiter's atmosphere, and if so, how much?
Unstoppable monster in the early universe
Mittwoch, 29.08.2018, 19:32:26 Uhr
Astronomers obtained the most detailed anatomy chart of a monster galaxy located 12.4 billion light-years away. Using the Atacama Large Millimeter/submillimeter Array (ALMA), the team revealed that the molecular clouds in the galaxy are highly unstable, which leads to runaway star formation.
Stars vs. dust in the Carina Nebula
Mittwoch, 29.08.2018, 14:13:33 Uhr
The Carina Nebula, one of the largest and brightest nebulae in the night sky, has been beautifully imaged by ESO's VISTA telescope at the Paranal Observatory in Chile. By observing in infrared light, VISTA has peered through the hot gas and dark dust enshrouding the nebula to show us myriad stars, both newborn and in their death throes.
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.