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|Astronomy News -- ScienceDaily|
Updated : Sat, 11 Jul 2020 15:07:56 EDT
Enormous 'superflare' detected on nearby star
Astronomers succeeded in detecting 12 stellar flare phenomena on AD Leonis. One of these flares was 20 times larger than those emitted by our own sun, categorizing it a 'superflare'. Subsequent data analysis presents new insight into these explosive phenomena.
Publ.Date : Thu, 09 Jul 2020 11:35:23 EDT
How colliding neutron stars could shed light on universal mysteries
Researchers have discovered an unusual pulsar - one of deep space's magnetized spinning neutron-star 'lighthouses' that emits highly focused radio waves from its magnetic poles. It is unusual because the masses of its two neutron stars are quite different -- with one far larger than the other. The breakthrough provides clues about unsolved mysteries in astrophysics -- including the expansion rate of the Universe (the Hubble constant).
Publ.Date : Wed, 08 Jul 2020 12:14:39 EDT
The collective power of the solar system's dark, icy bodies
Two new studies by researchers at the University of Colorado Boulder may help to solve one of the biggest mysteries about the dark, icy bodies of the outer solar system: why so many of them don't circle the sun the way they should.
Publ.Date : Tue, 07 Jul 2020 11:32:51 EDT
The cosmic commute towards star and planet formation
Interconnected gas flows reveal how star-forming gas is assembled in galaxies.
Publ.Date : Tue, 07 Jul 2020 11:32:50 EDT
New collection of stars, not born in our galaxy, discovered in Milky Way
Astrophysicists announced the discovery of Nyx, a new collection of 250 stars that they believe are the remnant of a dwarf galaxy that merged with the Milky Way eons ago. The research combined massive cosmological simulations and observational data from the Gaia space observatory. It required large scale supercomputers and deep learning algorithms. The team plans to explore Nyx further using ground-based telescopes.
Publ.Date : Tue, 07 Jul 2020 11:32:39 EDT
White dwarfs reveal new insights into the origin of carbon in the universe
A new analysis of white dwarf stars supports their role as a key source of carbon in galaxies. Every carbon atom in the universe was created by stars, but astrophysicists still debate which types of stars are the primary source of the carbon in our galaxy. Some studies favor low-mass stars that blew off their envelopes in stellar winds and became white dwarfs, while others favor massive stars that eventually exploded as supernovae.
Publ.Date : Mon, 06 Jul 2020 14:08:58 EDT
Scientific 'red flag' reveals new clues about our galaxy
By determining how much energy permeates the center of the Milky Way, researchers have moved closer to understanding the power behind our galaxy.
Publ.Date : Fri, 03 Jul 2020 14:12:10 EDT
Stellar fireworks celebrate birth of giant cluster
Astronomers created a stunning new image showing celestial fireworks in star cluster G286.21+0.17.
Publ.Date : Thu, 02 Jul 2020 11:50:24 EDT
Beacon from the early universe
Often described as cosmic lighthouses, quasars are luminous beacons that can be observed at the outskirts of the Universe, providing a rich topic of study for astronomers and cosmologists. Now scientists have announced the discovery of the second-most distant quasar ever found, at more than 13 billion lightyears from Earth.
Publ.Date : Wed, 01 Jul 2020 16:01:32 EDT
Higher concentration of metal in Moon's craters provides new insights to its origin
There has been considerable debate over how the Moon was formed. The popular hypothesis contends that the Moon was formed by a Mars-sized body colliding with Earth's upper crust which is poor in metals. But new research suggests the Moon's subsurface is more metal-rich than previously thought, providing new insights that could challenge our understanding of that process.
Publ.Date : Wed, 01 Jul 2020 15:17:24 EDT
First exposed planetary core discovered allows glimpse inside other worlds
The surviving core of a gas giant has been discovered orbiting a distant star, offering an unprecedented glimpse into the interior of a planet.
Publ.Date : Wed, 01 Jul 2020 12:54:38 EDT
A binary star as a cosmic particle accelerator
Scientists have identified the binary star Eta Carinae as a new kind of source for very high-energy (VHE) cosmic gamma-radiation. Eta Carinae is located 7500 lightyears away in the constellation Carina in the Southern Sky and, based on the data collected, emits gamma rays with energies up to 400 gigaelectronvolts (GeV), some 100 billion times more than the energy of visible light.
Publ.Date : Wed, 01 Jul 2020 10:01:06 EDT
Hidden sources of mysterious cosmic neutrinos seen on Earth
A new model points to the coronoe of supermassive black holes at the cores of active galaxies to help explain the excess neutrinos observed by the IceCube Neutrino Observatory.
Publ.Date : Wed, 01 Jul 2020 08:47:50 EDT
NASA's TESS delivers new insights into an ultrahot world
KELT-9 b is one of the hottest planets known. New measurements from NASA's Transiting Exoplanet Survey Satellite (TESS) have enabled astronomers to greatly improve their understanding of this bizarre world.
Publ.Date : Tue, 30 Jun 2020 12:51:44 EDT
To find giant black holes, start with Jupiter
On a quest to find the Universe's largest black holes, researchers identify the center of the solar system within 100 meters.
Publ.Date : Tue, 30 Jun 2020 12:51:36 EDT
A cosmic mystery: ESO telescope captures the disappearance of a massive star
Astronomers have discovered the absence of an unstable massive star in a dwarf galaxy. Scientists think this could indicate that the star became less bright and partially obscured by dust. An alternative explanation is that the star collapsed into a black hole without producing a supernova.
Publ.Date : Tue, 30 Jun 2020 07:20:49 EDT
SwRI scientists demonstrate speed, precision of in situ planetary dating device
Scientists have increased the speed and accuracy of a laboratory-scale instrument for determining the age of planetary specimens onsite. The team is progressively miniaturizing the Chemistry, Organics and Dating Experiment (CODEX) instrument to reach a size suitable for spaceflight and lander missions.
Publ.Date : Mon, 29 Jun 2020 12:40:56 EDT
First measurement of spin-orbit alignment on planet Beta Pictoris b
Astronomers have made the first measurement of spin-orbit alignment for a distant 'super-Jupiter' planet, demonstrating a technique that could enable breakthroughs in the quest to understand how exoplanetary systems form and evolved.
Publ.Date : Mon, 29 Jun 2020 09:00:10 EDT
Super-Earths discovered orbiting nearby red dwarf
The nearest exoplanets to us provide the best opportunities for study, including searching for evidence of life outside the Solar System. Astronomers have now detected a system of super-Earth planets orbiting the nearby star Gliese 887, the brightest red dwarf star in the sky. The newly discovered super-Earths lie close to the red dwarf's habitable zone, where water can exist in liquid form.
Publ.Date : Thu, 25 Jun 2020 14:48:33 EDT
Monster black hole found in the early universe
Astronomers have discovered the second-most distant quasar ever found. It is the first quasar to receive an indigenous Hawaiian name, Poniua'ena. Data show the supermassive black hole powering Poniua'ena is surprisingly massive, challenging current theories of how supermassive black holes formed and grew in the young universe.
Publ.Date : Thu, 25 Jun 2020 14:07:23 EDT