pulsing

A space telescope scanning the skies for gamma rays has added hundreds of new powerful dead stars to its catalog.The addition of 294 previously unidentified stars means that the Fermi catalog of gamma-ray pulsars now contains more than 340 objects – a significant step up since the Fermi Large Area Telescope started observing in 2008, when there were fewer than 10 known such pulsars.The newly released Third Fermi Large Area Telescope Catalog of Gamma-Ray Pulsars is a real treasure trove of information that will help us…

Compared to some other galaxies out there, the supermassive black hole at the heart of the Milky Way isn't a particularly active one. It's not guzzling down scads of material, and it's not blasting giant jets of plasma into space.Even a relatively peaceful supermassive black hole, however, is a wild, savage beast, and our own – named Sagittarius A* – has been recorded doing some pretty strange things. And now there's a new one: astrophysicists Gustavo Magallanes-Guijón and Sergio Mendoza of National Autonomous University…

Microplastics naturally scatter in flowing water (left), but after turning on sound waves, the particles concentrate along the tube’s sides (right), making them easier to remove. Credit: Menake PiyasenaMicroplastic particles, less than 5 mm wide, pose potential harm to aquatic life and humans as they pervade waterways worldwide. Researchers have developed a two-stage device using steel tubes and pulsing sound waves to effectively remove most plastic particles from water samples. The team will present their results at the…

A close study of 40 years' worth of data has revealed something a little hinky going on with Jupiter.According to a wealth of information collected by both ground- and space-based telescopes, the temperature in Jupiter's upper troposphere exhibits regular fluctuations that don't seem to be tied to any seasonal variations. This surprising and intriguing finding could help scientists finally understand the gas giant's strange weather."We've solved one part of the puzzle now, which is that the atmosphere shows these natural…

The Chirodectes maculatus jellyfish is elusive. So far, there have only been two documented sightings of this particular jellyfish. Now, a group of divers from Scuba Kavieng have managed to capture this rare jellyfish on video. Many believe this video could be the first documented video recording of the Chirodectes maculatus. Divers caught a rare jellyfish on video The giant phantom jellyfish is another elusive creature that scientists have captured rare sightings of. Image source: Monterey Bay Aquarium…