Fermi spots a supernova"s "fizzled" gamma-ray burst
On Aug. 26, 2020, NASA's Fermi Gamma-ray Space Telescope detected a pulse of high-energy radiation that had been racing toward Earth for nearly half the present age of the universe. Lasting only about a second, it turned out to be one for the record.....»»
New X-ray pulsar discovered
Using ART-XC and eROSITA telescopes onboard the Spectrum Roentgen Gamma (SRG) mission, an international team of astronomers has detected a new pulsar. The newly found object, designated SRGA J204318.2+443815, turns out to be a long-period, faint X-ra.....»»
Amazon Asked Apple To Remove an App That Spots Fake Reviews, and Apple Agreed
Apple has removed Fakespot, a well-known app for detecting fake product reviews, from its App Store after Amazon complained the app provided misleading information and potential security risks. From a report: Fakespot's app works by analyzing the cre.....»»
Newly-introduced butterfly could become widespread in Canada
This summer, if you see a butterfly with wings that are blue on top with orange spots underneath, you may have crossed paths with a male European Common Blue (or Polyommatus icarus), a newly introduced species in Canada......»»
Chinese astronomers investigate X-ray bursts of SGR J1935+2154
By analyzing the data from NASA's Fermi spacecraft, astronomers from the Hebei Normal University and Nanjing University in China, have investigated X-ray bursting activity of a soft gamma-ray repeater (SGR) known as SGR J1935+2154. Results of the stu.....»»
Rescuing the Integral spacecraft: No thrust? No problem
A year ago tomorrow, a failure on the Integral spacecraft meant it fired its thrusters for likely the last time. In the days since, the spacecraft in Earth orbit has continued to shed light on the violent gamma ray universe, and it should soon be wor.....»»
Satellites map floods in western Europe
Record rainfall has caused swollen rivers to burst their banks and wash away homes and other buildings in western Europe—leading to more than 90 casualties and over 1000 people missing. Data from the Copernicus Sentinel-1 mission are being used to.....»»
What Causes Gamma-Ray Bursts? Their "Afterglows" Hold Clues
These high-energy explosions, brighter than billions and billions of suns, have recently been tracked for days, upending ideas about the cataclysms that create them......»»
Exploding Stars May Have Assaulted Ancient Earth
sciencehabit shares a report from Science Magazine: Over the past 2 decades, researchers have found hundreds of radioactive atoms, trapped in seafloor minerals, that came from an ancient supernova explosion marking the death of a nearby star. Eruptin.....»»
Galactic gamma ray bursts predicted last year show up on schedule
Magnetars are bizarre objects—massive, spinning neutron stars with magnetic fields among the most powerful known, capable of shooting off brief bursts of radio waves so bright they're visible across the universe......»»
Astronomers detect ultra-high energy gamma-ray source
Astronomers from the Chinese Academy of Sciences (CAS) and elsewhere report the detection of a new ultra-high energy (UHE) gamma-ray source in the Galactic plane. The newly identified source, designated LHAASO J0341+5258, is extended and emission fro.....»»
Teardrop star reveals hidden supernova doom
Astronomers have made the rare sighting of two stars spiraling to their doom by spotting the tell-tale signs of a teardrop-shaped star......»»
The best places to land in Fortnite
While having accurate aim is key to winning in Fortnite, so too is choosing a good starting point. Here are the best spots to land in Fortnite during season 6......»»
Scientists solve 40-year mystery over Jupiter"s X-ray aurora
A research team co-led by UCL has solved a decades-old mystery as to how Jupiter produces a spectacular burst of X-rays every few minutes......»»
Mapping dengue hot spots pinpoints risk for Zika and chikungunya
Data from nine cities in Mexico confirms that identifying dengue fever 'hot spots' can provide a predictive map for future outbreaks of Zika and chikungunya. All three of these viral diseases are spread by the Aedes aegypti mosquito......»»
LHAASO measures Crab Nebula brightness, yields new UHE gamma-ray standard
The Large High Altitude Air Shower Observatory (LHAASO), one of China's key national science and technology infrastructure facilities, has accurately measured the brightness over 3.5 orders of magnitude of the standard candle in high-energy astronomy.....»»
Protein"s "silent code" affects how cells move
The protein actin is ubiquitous and essential for life. In mammals, every cell expresses two of its forms, beta-actin and gamma-nonmuscle-actin. Despite having distinct roles, the two forms are nearly identical, sharing 99% of their amino acid sequen.....»»
New type of massive explosion explains mystery star
A massive explosion from a previously unknown source—10 times more energetic than a supernova—could be the answer to a 13-billion-year-old Milky Way mystery......»»
Researchers examine properties of supernova SN 2012au
An international team of astronomers has performed photometric, polarimetric and spectroscopic observations of the Type Ib supernova SN 2012au. Results of this comprehensive study deliver important information regarding the properties of this cosmic.....»»
Galaxy cluster Abell 3158 inspected in X-rays
Astronomers from the University of Bonn, Germany and elsewhere have used the eROSITA telescope onboard the Spektrum-Roentgen-Gamma (SRG) mission to perform X-rays observations of a nearby galaxy cluster known as Abell 3158. Results of this observatio.....»»
Solving a long-standing mystery about the desert"s rock art canvas
Wander around a desert most anywhere in the world, and eventually you'll notice dark-stained rocks, especially where the sun shines most brightly and water trickles down or dew gathers. In some spots, if you're lucky, you might stumble upon ancient a.....»»