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|Astronomy News -- ScienceDaily|
Updated : Wed, 23 Oct 2019 17:07:44 EDT
First identification of a heavy element born from neutron star collision
For the first time, a freshly made heavy element, strontium, has been detected in space, in the aftermath of a merger of two neutron stars. The detection confirms that the heavier elements in the Universe can form in neutron star mergers, providing a missing piece of the puzzle of chemical element formation.
Publ.Date : Wed, 23 Oct 2019 13:21:53 EDT
Monstrous galaxy from dawn of the universe accidentally discovered
The early universe is filled with monsters, a new study revealed. Researchers discovered a previously invisible galaxy, and perhaps a new galaxy population waiting to be discovered.
Publ.Date : Tue, 22 Oct 2019 14:22:02 EDT
Origin and chemical makeup of Saturn's Moon Titan's dunes
Astronomers exposed acetylene ice -- a chemical that is used on Earth in welding torches and exists at Titan's equatorial regions -- at low temperatures to proxies of high-energy galactic cosmic rays.
Publ.Date : Fri, 18 Oct 2019 10:05:06 EDT
Ancient stars shed light on Earth's similarities to other planets
Earth-like planets may be common in the universe, a new study implies. The team of astrophysicists and geochemists presents new evidence that the Earth is not unique.
Publ.Date : Thu, 17 Oct 2019 14:10:52 EDT
Stormy cluster weather could unleash black hole power and explain lack of cosmic cooling
'Weather' in clusters of galaxies may explain a longstanding puzzle. Scientists have now used sophisticated simulations to show how powerful jets from supermassive black holes are disrupted by the motion of hot gas and galaxies, preventing gas from cooling, which could otherwise form stars.
Publ.Date : Thu, 17 Oct 2019 11:17:27 EDT
Hubble observes first confirmed interstellar comet
Hubble has given astronomers their best look yet at an interstellar visitor -- comet 2I/Borisov -- whose speed and trajectory indicate it has come from beyond our solar system. Comet 2I/Borisov is only the second such interstellar object known to have passed through the solar system.
Publ.Date : Wed, 16 Oct 2019 13:12:36 EDT
Gas 'waterfalls' reveal infant planets around young star
For the first time, astronomers have witnessed 3D motions of gas in a planet-forming disk. At three locations in the disk around a young star called HD 163296, gas is flowing like a waterfall into gaps that are most likely caused by planets in formation. These gas flows have long been predicted and would directly influence the chemical composition of planet atmospheres.
Publ.Date : Wed, 16 Oct 2019 13:12:12 EDT
Going against the flow around a supermassive black hole
At the center of a galaxy called NGC 1068, a supermassive black hole hides within a thick doughnut-shaped cloud of dust and gas. When astronomers used the Atacama Large Millimeter/submillimeter Array (ALMA) to study this cloud in more detail, they made an unexpected discovery that could explain why supermassive black holes grew so rapidly in the early Universe.
Publ.Date : Tue, 15 Oct 2019 13:14:28 EDT
Heron survey fishes out detail in ghostly galaxy outskirts
Astronomers have completed the largest survey to date of the faint outskirts of nearby galaxies, successfully testing a low-cost system for exploring these local stellar systems. The team find that the diameters of the galactic outskirts -- the haloes -- appear to correlate with the brightness and type of galaxy.
Publ.Date : Tue, 15 Oct 2019 13:14:12 EDT
Soil on moon and Mars likely to support crops
Researchers have produced crops in Mars and moon soil simulant developed by NASA. The research supports the idea that it would not only be possible to grow food on Mars and the moon to feed future settlers, but also to obtain viable seed from crops grown there.
Publ.Date : Tue, 15 Oct 2019 11:53:59 EDT
Astronomers use giant galaxy cluster as X-ray magnifying lens
Astronomers have used a massive cluster of galaxies as an X-ray magnifying glass to peer back in time, to nearly 9.4 billion years ago. In the process, they spotted a tiny dwarf galaxy in its very first, high-energy stages of star formation.
Publ.Date : Mon, 14 Oct 2019 11:17:18 EDT
Black holes stunt growth of dwarf galaxies
Astronomers have discovered that powerful winds driven by supermassive black holes in the centers of dwarf galaxies have a significant impact on the evolution of these galaxies by suppressing star formation.
Publ.Date : Fri, 11 Oct 2019 16:53:22 EDT
Ice on lunar south pole may have more than one source
New research sheds light on the ages of ice deposits reported in the area of the Moon's south pole -- information that could help identify the sources of the deposits and help in planning future human exploration.
Publ.Date : Thu, 10 Oct 2019 13:57:01 EDT
Milky Way raids intergalactic 'bank accounts'
Gas blown out of the Milky Way disk from exploding stars falls back onto the galaxy to form new generations of stars. In an effort to account for this recycling process, astronomers were surprised to find a surplus of incoming gas.
Publ.Date : Thu, 10 Oct 2019 12:56:15 EDT
The Milky Way kidnapped several tiny galaxies from its neighbor
A team of astronomers has discovered that several of the small -- or 'dwarf' -- galaxies orbiting the Milky Way were likely stolen from the Large Magellanic Cloud, including several ultrafaint dwarfs, but also relatively bright and well-known satellite galaxies, such as Carina and Fornax.
Publ.Date : Thu, 10 Oct 2019 11:32:03 EDT
Liquifying a rocky exoplanet
A hot, molten Earth would be around 5% larger than its solid counterpart. The difference between molten and solid rocky planets is important for the search of Earth-like worlds beyond our Solar System and the understanding of Earth itself.
Publ.Date : Wed, 09 Oct 2019 09:58:30 EDT
Physicists have found a way to 'hear' dark matter
Physicists at Stockholm University and the Max Planck Institute for Physics have turned to plasmas in a proposal that could revolutionise the search for the elusive dark matter.
Publ.Date : Wed, 09 Oct 2019 09:39:42 EDT
Pressure runs high at edge of solar system
Out at the boundary of our solar system, pressure runs high. This pressure, the force plasma, magnetic fields and particles like ions, cosmic rays and electrons exert on one another when they flow and collide, was recently measured by scientists in totality for the first time -- and it was found to be greater than expected.
Publ.Date : Tue, 08 Oct 2019 11:59:15 EDT
2019 Nobel Prize in Physics: Evolution of the universe and discovery of exoplanet orbiting solar-type star
This year's Nobel Prize in Physics is being awarded "for contributions to our understanding of the evolution of the universe and Earth's place in the cosmos," with one half to James Peebles "for theoretical discoveries in physical cosmology" and the other half jointly to Michel Mayor and Didier Queloz "for the discovery of an exoplanet orbiting a solar-type star."
Publ.Date : Tue, 08 Oct 2019 08:55:31 EDT
Scientists observe year-long plateaus in decline of type Ia supernova light curves
A team of scientists have discovered that the fading of infrared light following Type Ia supernovae explosions can be interrupted, with brightness staying the same for up to a year.
Publ.Date : Mon, 07 Oct 2019 13:10:03 EDT