Astronomy News -- ScienceDaily
Astronomy news. New! Earth-like extrasolar planet found; double helix nebula; supermassive black holes, astronomy articles, astronomy pictures. Updated daily.
Disruption tolerant networking to demonstrate Internet in space
Montag, 16.07.2018, 17:45:26 Uhr
The interplanetary Internet may soon become a reality. NASA is about to demonstrate Delay/Disruption Tolerant Networking, or DTN -- a technology that sends information through space and ground networks to its destination.
How might dark matter interact with ordinary matter?
Freitag, 13.07.2018, 15:35:45 Uhr
Scientists have imposed conditions on how dark matter may interact with ordinary matter. In the search for direct detection of dark matter, the experimental focus has been on WIMPs, or weakly interacting massive particles, the hypothetical particles thought to make up dark matter. But the research team invokes a different theory to challenge the WIMP paradigm: the self-interacting dark matter model, or SIDM.
VERITAS supplies critical piece to neutrino discovery puzzle
Donnerstag, 12.07.2018, 17:45:44 Uhr
The VERITAS array has confirmed the detection of gamma rays from the vicinity of a supermassive black hole. While these detections are relatively common for VERITAS, this black hole is potentially the first known astrophysical source of high-energy cosmic neutrinos, a type of ghostly subatomic particle.
Breakthrough in the search for cosmic particle accelerators
Donnerstag, 12.07.2018, 17:45:25 Uhr
In a global observation campaign, scientist have for the first time located a source of high-energy cosmic neutrinos, ghostly elementary particles that travel billions of light years through the universe, flying unaffected through stars, planets and entire galaxies.
Hubble and Gaia team up to fuel cosmic conundrum
Donnerstag, 12.07.2018, 17:44:48 Uhr
Using the power and synergy of two space telescopes, astronomers have made the most precise measurement to date of the universe's expansion rate.
Could gravitational waves reveal how fast our universe is expanding?
Donnerstag, 12.07.2018, 17:44:34 Uhr
An new study finds black holes and neutron stars are key to measuring our expanding universe.
Centenary of cosmological constant lambda
Mittwoch, 11.07.2018, 16:57:07 Uhr
Physicists are now celebrating the 100th anniversary of the cosmological constant. On this occasion, two recent articles highlight its role in modern physics and cosmology. Before becoming widely accepted, the cosmological constant had to undergo many discussions about its necessity, its value and its physical essence. Today, there are still unresolved problems in understanding the deep physical nature of the phenomena associated with the cosmological constant.
Colorful celestial landscape
Mittwoch, 11.07.2018, 15:31:37 Uhr
New observations show the star cluster RCW 38 in all its glory. This image was taken during testing of the HAWK-I camera with the GRAAL adaptive optics system. It shows RCW 38 and its surrounding clouds of brightly glowing gas in exquisite detail, with dark tendrils of dust threading through the bright core of this young gathering of stars.
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.
Plasma-spewing quasar shines light on universe's youth, early galaxy formation
Montag, 09.07.2018, 16:11:47 Uhr
Astronomers found a quasar with the brightest radio emission ever observed in the early universe, due to it spewing out a jet of extremely fast-moving material. Scientists have revealed in unprecedented detail the jet shooting out of a quasar that formed within the universe's first billion years of existence.
The Gaia Sausage: The major collision that changed the Milky Way galaxy
Mittwoch, 04.07.2018, 17:20:33 Uhr
Astronomers have discovered an ancient and dramatic head-on collision between the Milky Way and a smaller object, dubbed the 'Sausage' galaxy. The cosmic crash was a defining event in the early history of the Milky Way and reshaped the structure of our galaxy, fashioning both its inner bulge and its outer halo, the astronomers report in a series of new papers.
Superstar Eta Carinae shoots cosmic rays
Dienstag, 03.07.2018, 17:28:24 Uhr
NASA's NuSTAR space telescope shows that Eta Carinae, the most luminous and massive stellar system within 10,000 light-years, is accelerating cosmic rays.
Milky Way type dust particles discovered in a galaxy 11 billion light years from Earth
Dienstag, 03.07.2018, 16:59:53 Uhr
An international research team has found the same type of interstellar dust that we know from the Milky Way in a distant galaxy 11 billion light years from Earth. This type of dust has been found to be rare in other galaxies and the new discovery plays an important role in understanding what it takes for this particular type of interstellar dust to be formed.
Molecular oxygen in comet's atmosphere not created on its surface
Dienstag, 03.07.2018, 16:54:39 Uhr
Scientists have found that molecular oxygen around comet 67P is not produced on its surface, as some suggested, but may be from its body.
Beam of light from first confirmed neutron star merger emerge from behind sun
Montag, 02.07.2018, 17:11:25 Uhr
Astronomers had to wait over 100 days for the sight of the first of confirmed neutron star merger to reemerge from behind the glare of the sun.
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.
Astronomers observe the magnetic field of the remains of supernova 1987A
Freitag, 29.06.2018, 16:26:17 Uhr
For the first time, astronomers have directly observed the magnetism in one of astronomy's most studied objects: the remains of Supernova 1987A (SN 1987A), a dying star that appeared in our skies over thirty years ago. In addition to being an impressive observational achievement, the detection provides insight into the early stages of the evolution of supernova remnants and the cosmic magnetism within them.
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.
Mars dust storm may lead to new weather discoveries
Donnerstag, 28.06.2018, 18:44:12 Uhr
Mars is experiencing an estimated 15.8-million-square-mile dust storm, roughly the size of North and South America. This storm may not be good news for the NASA solar-powered Opportunity rover, but one professor sees this as a chance to learn more about Martian weather.
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.
Meteorite 'Black Beauty' expands window for when life might have existed on Mars
Donnerstag, 28.06.2018, 16:50:25 Uhr
New evidence for a rapid crystallization and crust formation on Mars has just been published. The study, based on the analysis of the rare Mars meteorite Black Beauty, significantly expands the window for when life might have existed on Mars.
Scientists find evidence of complex organic molecules from Enceladus
Mittwoch, 27.06.2018, 22:04:56 Uhr
Using mass spectrometry data from NASA's Cassini spacecraft, scientists found that large, carbon-rich organic molecules are ejected from cracks in the icy surface of Saturn's moon Enceladus. Scientists think chemical reactions between the moon's rocky core and warm water from its subsurface ocean are linked to these complex molecules.
Milky Way is rich in grease-like molecules
Mittwoch, 27.06.2018, 22:03:57 Uhr
Our galaxy is rich in grease-like molecules, according to new research. Astronomers used a laboratory to manufacture material with the same properties as interstellar dust and used their results to estimate the amount of 'space grease' found in the Milky Way.
Why bacteria survive in space
Mittwoch, 27.06.2018, 22:02:49 Uhr
Earth germs could be contaminating other planets. Despite extreme decontamination efforts, bacteria from Earth still manages to find its way into outer space aboard spacecraft. Biologist are working to better understand how and why some spores elude decontamination.
`Oumuamua gets a boost
Mittwoch, 27.06.2018, 22:02:40 Uhr
`Oumuamua, the first interstellar object discovered in the Solar System, is moving away from the Sun faster than expected. This anomalous behavior was detected by a worldwide astronomical collaboration. The new results suggest that `Oumuamua is most likely an interstellar comet and not an asteroid.
A galactic test will clarify the existence of dark matter
Dienstag, 26.06.2018, 01:27:45 Uhr
Researchers used sophisticated computer simulations to devise a test that could answer a burning question in astrophysics: is there really dark matter? Or does Newton's gravitational law need to be modified? The new study shows that the answer is hidden in the motion of the stars within small satellite galaxies swirling around the Milky Way.
Recipe for star clusters
Dienstag, 26.06.2018, 01:26:59 Uhr
Clusters of stars across the vast reaches of time and space of the entire universe were all created the same way, researchers have determined.
NASA's James Webb Space Telescope to target Jupiter's Great Red Spot
Dienstag, 26.06.2018, 01:26:54 Uhr
NASA's James Webb Space Telescope, the most ambitious and complex space observatory ever built, will use its unparalleled infrared capabilities to study Jupiter's Great Red Spot, shedding new light on the enigmatic storm and building upon data returned from NASA's Hubble Space Telescope and other observatories.
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.
Einstein proved right in another galaxy
Donnerstag, 21.06.2018, 20:10:43 Uhr
Astronomers have made the most precise test of gravity outside our own solar system. By combining data taken with NASA's Hubble Space Telescope and the European Southern Observatory's Very Large Telescope, the researchers show that gravity in this galaxy behaves as predicted by Albert Einstein's general theory of relativity, confirming the theory's validity on galactic scales.
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.
Old star clusters could have been the birthplace of supermassive stars
Donnerstag, 21.06.2018, 16:10:34 Uhr
Astrophysicists may have found a solution to a problem that has perplexed scientists for more than 50 years: why are the stars in globular clusters made of material different to other stars found in the Milky Way?
Martian dust storm grows global: Curiosity captures photos of thickening haze
Mittwoch, 20.06.2018, 23:09:56 Uhr
A storm of tiny dust particles has engulfed much of Mars over the last two weeks and prompted NASA's Opportunity rover to suspend science operations. But across the planet, NASA's Curiosity rover, which has been studying Martian soil at Gale Crater, is expected to remain largely unaffected by the dust. The Martian dust storm has grown in size and is now officially a 'planet-encircling' (or 'global') dust event.
Last of universe's missing ordinary matter
Mittwoch, 20.06.2018, 21:00:53 Uhr
Researchers have helped to find the last reservoir of ordinary matter hiding in the universe.
Surgery in space
Mittwoch, 20.06.2018, 15:48:01 Uhr
With renewed public interest in manned space exploration comes the potential need to diagnose and treat medical issues encountered by future space travelers.
Best evidence of rare black hole captured
Montag, 18.06.2018, 20:18:34 Uhr
Scientists have been able to prove the existence of small black holes and those that are super-massive but the existence of an elusive type of black hole, known as intermediate-mass black holes (IMBHs) is hotly debated. New research shows the strongest evidence to date that this middle-of-the-road black hole exists, by serendipitously capturing one in action devouring an encountering star.
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.
Explosive volcanoes spawned mysterious Martian rock formation
Montag, 18.06.2018, 16:25:53 Uhr
Explosive volcanic eruptions that shot jets of hot ash, rock and gas skyward are the likely source of a mysterious Martian rock formation, a new study finds. The new finding could add to scientists' understanding of Mars's interior and its past potential for habitability, according to the study's authors.
Astronomers see distant eruption as black hole destroys star
Freitag, 15.06.2018, 03:38:19 Uhr
Scientists get first direct images showing fast-moving jet of particles ejected as a supermassive black hole at the core of a galaxy shreds a passing star.
Dust clouds can explain puzzling features of active galactic nuclei
Freitag, 15.06.2018, 03:36:15 Uhr
Many large galaxies have a bright central region called an active galactic nucleus, powered by matter spiraling into a supermassive black hole. Gas clouds around the AGN emit light at characteristic wavelengths, but the complexity and variability of these emissions has been a longstanding puzzle. A new study explains these and other puzzling features of active galactic nuclei as the result of small clouds of dust that can partially obscure the innermost regions of AGNs.
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.
Short gamma-ray bursts do follow binary neutron star mergers
Donnerstag, 14.06.2018, 07:51:28 Uhr
Researchers have confirmed that last fall's union of two neutron stars did in fact cause a short gamma-ray burst.
The true power of the solar wind
Dienstag, 12.06.2018, 16:57:53 Uhr
The planets and moons of our solar system are continuously being bombarded by particles from the sun. On the Moon or on Mercury, the uppermost layer of rock is gradually eroded by the impact of sun particles. New results show that previous models of this process are incomplete. The effects of solar wind bombardment are much more drastic than previously thought.
Diamond dust shimmering around distant stars
Montag, 11.06.2018, 19:38:02 Uhr
Some of the tiniest diamonds in the universe -- bits of crystalline carbon hundreds of thousands of times smaller than a grain of sand -- have been detected swirling around three infant star systems in the Milky Way. These microscopic gemstones are neither rare nor precious; they are, however, exciting for astronomers who identified them as the source of a mysterious cosmic microwave 'glow' emanating from several protoplanetary disks in our galaxy.
Minerology on Mars points to a cold and icy ancient climate
Freitag, 08.06.2018, 06:31:55 Uhr
The climate throughout Mars' early history has long been debated -- was the Red Planet warm and wet, or cold and icy? New research published in Icarus provides evidence for the latter.
NASA finds ancient organic material, mysterious methane on Mars
Donnerstag, 07.06.2018, 20:29:16 Uhr
NASA's Curiosity rover has found new evidence preserved in rocks on Mars that suggests the planet could have supported ancient life, as well as new evidence in the Martian atmosphere that relates to the search for current life on the Red Planet.
The disc of the Milky Way is bigger than we thought
Donnerstag, 07.06.2018, 17:27:46 Uhr
A team of researchers suggests that if we could travel at the speed of light it would take us 200,000 years to cross the disc of our Galaxy.
One of the most massive neutron stars ever discovered
Donnerstag, 07.06.2018, 17:27:37 Uhr
Using a pioneering method, researchers have found a neutron star of about 2.3 Solar masses -- one of the most massive ever detected.
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.
How solar prominences vibrate
Donnerstag, 07.06.2018, 17:27:30 Uhr
Researchers have cataloged around 200 oscillations of the solar prominences during the first half of 2014. Its development has been possible thanks to the GONG network of telescopes, of which one of them is located in the Teide Observatory.
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.
Astronomers find a galaxy unchanged since the early universe
Donnerstag, 07.06.2018, 16:10:07 Uhr
Researchers confirm the first detection of a relic galaxy with the Hubble Space Telescope.
Discovery of clusters of galaxies in the early universe
Donnerstag, 07.06.2018, 16:09:59 Uhr
Until now astronomers thought that these phenomena occurred 3,000 million years after the Big Bang, but this new result shows that they were already happening when the Universe was 1,500 million years old.
How do you weigh a galaxy? Especially the one you're in?
Mittwoch, 06.06.2018, 23:38:03 Uhr
Pinning down the mass of a galaxy may seem like an esoteric undertaking, but scientists think it holds the key to unraveling the nature of the elusive, yet-to-be-seen dark matter, and the fabric of our cosmos. A new technique promises more reliable estimates of the masses of galaxies.
Tumultuous galaxy mergers better at switching on black holes
Mittwoch, 06.06.2018, 23:37:52 Uhr
A new study finds that violent crashes may be more effective at activating black holes than more peaceful mergers.
Majority of Americans believe it is essential that the US remain a global leader in space
Mittwoch, 06.06.2018, 18:04:51 Uhr
Roughly seven in 10 Americans (72 percent) say it is essential for the US to continue to be a world leader in space exploration. Strong public support is widely shared across gender, generational, educational and political groups.
As solar wind blows, our heliosphere balloons
Mittwoch, 06.06.2018, 18:04:11 Uhr
What happens when the solar wind suddenly starts to blow significantly harder? According to two recent studies, the boundaries of our entire solar system balloon outward -- and an analysis of particles rebounding off of its edges will reveal its new shape.
Collective gravity, not Planet Nine, may explain the orbits of 'detached objects'
Montag, 04.06.2018, 19:17:19 Uhr
Bumper car-like interactions at the edges of our solar system -- and not a mysterious ninth planet -- may explain the dynamics of strange bodies called 'detached objects,' according to a new study.
ALMA and VLT find too many massive stars in starburst galaxies, near and far
Montag, 04.06.2018, 17:25:50 Uhr
Astronomers using ALMA and the VLT have discovered that both starburst galaxies in the early Universe and a star-forming region in a nearby galaxy contain a much higher proportion of massive stars than is found in more peaceful galaxies. These findings challenge current ideas about how galaxies evolved, changing our understanding of cosmic star-formation history and the build up of chemical elements.
Globular clusters 4 billion years younger than previously thought
Montag, 04.06.2018, 17:24:38 Uhr
Globular clusters could be up to 4 billion years younger than previously thought, new research has found.