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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.
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.
NASA's OSIRIS-REx begins asteroid operations campaign
Freitag, 24.08.2018, 21:05:18 Uhr
OSIRIS-REx caught its first glimpse of asteroid Bennu last week and began the final approach toward its target.
New galaxy found?
Mittwoch, 22.08.2018, 17:44:41 Uhr
A student spotted what looked like a 'smudge' last summer on deep sky images. Astronomers have now announced that it was very likely a new galaxy about 37 million lightyears away -- a part of the Leo I galaxy group that is 'lowest surface brightness object ever detected via integrated light.'
Stars memorize rebirth of our home galaxy
Dienstag, 21.08.2018, 15:42:47 Uhr
The Milky Way has died once before and we are now in what is considered its second life, according to researchers whose calculations have revealed previously unknown details about our galaxy.
Ice confirmed at the moon's poles
Dienstag, 21.08.2018, 02:36:38 Uhr
Using data from NASA's Moon Mineralogy Mapper instrument, scientists have identified three specific signatures that definitively prove there is water ice at the surface of the Moon.
Light from ancient quasars helps confirm quantum entanglement
Montag, 20.08.2018, 17:41:21 Uhr
New research boosts the case for quantum entanglement. Scientists have used distant quasars, one of which emitted its light 7.8 billion years ago and the other 12.2 billion years ago, to determine the measurements to be made on pairs of entangled photons. They found correlations among more than 30,000 pairs of photons -- far exceeding the limit for a classically based mechanism.
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.
Astronomers observe cosmic steam jets and molecules galore
Freitag, 17.08.2018, 21:03:22 Uhr
A team of scientists using the highest-frequency capabilities of the Atacama Large Millimeter/submillimeter Array (ALMA) has uncovered jets of warm water vapor streaming away from a newly forming star. The researchers also detected the 'fingerprints' of an astonishing assortment of molecules near this stellar nursery.
Astronomers identify some of the oldest galaxies in the universe
Freitag, 17.08.2018, 00:32:00 Uhr
Astronomers have found evidence that the faintest satellite galaxies orbiting our own Milky Way galaxy are among the very first galaxies that formed in our universe.
Hubble paints picture of the evolving universe
Donnerstag, 16.08.2018, 20:30:44 Uhr
Hubble and other space and ground-based telescopes, astronomers have assembled one of the most comprehensive portraits yet of the universe's evolutionary history.
Sprawling galaxy cluster found hiding in plain sight
Donnerstag, 16.08.2018, 19:21:01 Uhr
Scientists have uncovered a sprawling new galaxy cluster hiding in plain sight. The cluster, which sits a mere 2.4 billion light years from Earth, is made up of hundreds of individual galaxies and surrounds an extremely active supermassive black hole, or quasar.
Structurally 'inside-out' planetary nebula discovered
Donnerstag, 16.08.2018, 16:19:52 Uhr
Researchers have discovered the unusual evolution of the central star of a planetary nebula in our Milky Way galaxy. The finding sheds light on the future evolution, and more importantly, the ultimate fate of the Sun.
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.
Early opaque universe linked to galaxy scarcity
Dienstag, 14.08.2018, 21:09:51 Uhr
A team of astronomers has made a surprising discovery: 12.5 billion years ago, the most opaque place in the universe contained relatively little matter.
Historic space weather could clarify what's next
Montag, 13.08.2018, 17:33:29 Uhr
Scientists have discovered an underlying repeatable pattern in how space weather activity changes with the solar cycle - having analysed solar activity for the last half century.
Earth mini-moons: Potential for exciting scientific and commercial opportunities
Montag, 13.08.2018, 16:42:14 Uhr
The detection of 'mini-moons' -- small asteroids temporarily captured in orbit around Earth -- will vastly improve our scientific understanding of asteroids and the Earth-moon system. Small and fast-moving, they have evaded detection by existing technology, with only one confirmed mini-moon discovery to date. The advent of the Large Synoptic Survey Telescope could verify their existence and track their paths around our planet, presenting exciting scientific and commercial opportunities.
Parker Solar Probe launches on historic journey to touch the sun
Sonntag, 12.08.2018, 12:50:51 Uhr
Hours before the rise of the very star it will study, NASA's Parker Solar Probe launched from Florida Sunday to begin its journey to the Sun, where it will undertake a landmark mission. The spacecraft will transmit its first science observations in December, beginning a revolution in our understanding of the star that makes life on Earth possible.
Pairs of small colliding galaxies may seed future stars
Donnerstag, 09.08.2018, 20:45:21 Uhr
In a new study, astronomers show how gas expelled in the merger of two small galaxies can linger across vast distances for billions of years, where it may eventually feed gas to more massive galaxies to make new stars.
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.
Spinning heat shield for future spacecraft
Donnerstag, 09.08.2018, 17:25:07 Uhr
A newly developed prototype flexible heat shield for spacecraft could reduce the cost of space travel and even aid future space missions to Mars.
Elliptical elegance in glittering host of galaxies
Mittwoch, 08.08.2018, 13:54:29 Uhr
A glittering host of galaxies populate this rich image taken with ESO's VLT Survey Telescope, a state-of-the-art 2.6-m telescope designed for surveying the sky in visible light. The features of the multitude of galaxies strewn across the image allow astronomers to uncover the most delicate details of galactic structure.
Million fold increase in the power of waves near Jupiter's moon Ganymede
Dienstag, 07.08.2018, 15:51:46 Uhr
Chorus waves are electromagnetic waves. Converted to sound they sound like singing and chirping birds at dawn. They can cause polar lights above the Earth as well as damage to satellites. Now, a team of researchers has found that such waves are intensified million-fold around Jupiter's moon Ganymede. This study provides important observational constraints for theoretical studies.
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.
NASA's Planet-hunting TESS catches a comet before starting science
Montag, 06.08.2018, 16:59:44 Uhr
Before NASA's Transiting Exoplanet Survey Satellite (TESS) started science operations on July 25, 2018, the planet hunter sent back a stunning sequence of serendipitous images showing the motion of a comet.
Oldest-ever igneous meteorite contains clues to planet building blocks
Montag, 06.08.2018, 15:52:18 Uhr
Scientists believe the solar system was formed some 4.6 billion years ago when a cloud of gas and dust collapsed under gravity possibly triggered by a cataclysmic explosion from a nearby massive star or supernova. As this cloud collapsed, it formed a spinning disk with the sun in the center. Since then scientists have been able to establish the formation of the solar system piece by piece.
NASA assigns crews to first test flights, missions on commercial spacecraft
Freitag, 03.08.2018, 19:35:36 Uhr
NASA has introduced the first U.S. astronauts who will fly on American-made, commercial spacecraft to and from the International Space Station -- an endeavor that will return astronaut launches to U.S. soil for the first time since the space shuttle's retirement in 2011.
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.
Astronomers blown away by historic stellar blast
Donnerstag, 02.08.2018, 19:08:23 Uhr
Observations from the Gemini South and other telescopes in Chile played a critical role in understanding light echoes from a stellar eruption which occurred almost 200 years ago. Gemini spectroscopy shows that ejected material from the blast is the fastest ever seen from a star that remained intact.
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.
Parker Solar Probe and the birth of the solar wind
Montag, 30.07.2018, 19:29:27 Uhr
This summer, humanity embarks on its first mission to touch the Sun: A spacecraft will be launched into the Sun's outer atmosphere. Facing several-million-degree Fahrenheit temperatures, NASA's Parker Solar Probe will directly sample solar particles and magnetic fields to resolve some of the most important questions in solar science.
Pair of colliding stars spill radioactive molecules into space
Montag, 30.07.2018, 18:03:10 Uhr
Astronomers have made the first definitive detection of a radioactive molecule in interstellar space: a form, or isotopologue of aluminum monofluoride (26AlF). The new data -- made with ALMA and the NOEMA radio telescopes -- reveal that this radioactive isotopologue was ejected into space by the collision of two stars, a tremendously rare cosmic event that was witnessed on Earth as a 'new star,' or nova, in the year 1670.
Mars terraforming not possible using present-day technology
Montag, 30.07.2018, 18:03:07 Uhr
Science fiction writers have long featured terraforming, the process of creating an Earth-like or habitable environment on another planet, in their stories. Scientists themselves have proposed terraforming to enable the long-term colonization of Mars. A solution common to both groups is to release carbon dioxide gas trapped in the Martian surface to thicken the atmosphere and act as a blanket to warm the planet.
Einstein's general relativity confirmed near black hole
Montag, 30.07.2018, 15:01:58 Uhr
Observations made with ESO's Very Large Telescope have for the first time clearly revealed the effects of Einstein's general relativity on the motion of a star passing through the extreme gravitational field very close to the supermassive black hole in the center of the Milky Way. This long-sought result represents the climax of a 26-year-long observation campaign using ESO's telescopes in Chile.