Subterms
The burst of light from far away may have been a new type of supernova GLOBAL OBSERVATIONS An odd stellar flare called the “Cow” was observed by telescopes around the world, including the Australia Telescope Compact Array (shown) near Narrabri, Australia. Alex Cherney, CSIRO Share this: This article is only available to Science News subscribers. […] More
This series of brief radio signals comes from a galaxy 1.6 billion light-years away EARLY DAYS The Canadian Hydrogen Intensity Mapping Experiment in western Canada spotted 13 new fast radio bursts last summer, one of which repeats. The telescope wasn’t even operating at full capacity at the time. CHIME Collaboration Share this: This article is […] More
It’s the second probe ever to exit the heliosphere OVER AND OUT The Voyager 2 spacecraft has crossed into interstellar space, six years after its twin probe, Voyager 1. The two spacecraft are providing an unprecedented look at the edge of the sun’s influence (lighter blue bubble in this illustration). JPL-Caltech/NASA Share this: This article […] More
The discovery could shed light on how galaxies and black holes grow up together A MIGHTY WIND Supermassive black holes in the centers of galaxies can blow gas and plasma far away from their galaxies, as shown in this artist’s illustration based on the Pinwheel galaxy. JPL-Caltech/NASA Share this: This article is only available to […] More
The tally counts up the stray photons roaming through space THROUGH THE DARKNESS Gamma rays bursting from distant galaxies, like the one shown in the center of this artist’s illustration, can illuminate the diffuse light, called extragalactic background light, that manages escape its dusty environs. Aurore Simonnet/Swift/NASA Share this: This article is only available to […] More
Searching the cosmic microwave background could reveal other giant spheres of icy debris HIDDEN TREASURES This map of the cosmic microwave background taken by the Planck satellite could also hide signs of exo-Oort clouds — planetary graveyards surrounding other stars. Planck/ESA and NASA, IPAC Infrared Science Archive Share this: This article is only available to […] More
Any extra dimensions are too tiny to create mini black holes that can blink us out of existence POP GOES THE UNIVERSE If extra dimensions were large enough, a universe with different laws of physics could bubble up from the death of a black hole. That would be bad news for us: The new version […] More
The circumgalactic medium has been hard to observe, but new tools now make it possible. COSMIC CLOAK Whirls of cold and hot gas billow in this simulation of a circumgalactic medium surrounding a galaxy. With new tools and simulations, researchers have learned that the CGM helps a galaxy recycle its materials. M.S. Peeples et al/FOGGIE […] More
