Ben Turner is a U.K. based staff writer at Live Science. He covers physics and astronomy, among other topics like tech and climate change. He graduated from University College London with a degree in particle physics before training as a journalist.
Astronomers have discovered the most ancient"heartbeat" radio signal, and they want to use it to find the missing half of the universe's matter.
As the fast radio burst is 1.5 times more ancient and distant than the previous record holder, its light could be used to find an approximate weight to the universe — and perhaps to figure out where half of its matter went, astronomers say. The researchers published their findings Oct. 19 in the journal Nature.
The problem, however, is that these methods disagree, creating a discrepancy called the Sigma-8 tension that threatens to tear standard theories of cosmology apart. Where the missing matter could be isn't certain, but astronomers have a hunch it is floating in intergalactic space in vast, diffuse clouds of gas and dust. But to measure these clouds, astronomers need powerful sources of light.
As FRB pulses move through space, the matter they move through separates out the light pulse’s different frequencies, producing a lag between the arrival of the high and low frequencies in the signal. From the length of this delay, astronomers can figure out how much matter the burst has moved through.
México Últimas Noticias, México Titulares
Similar News:También puedes leer noticias similares a ésta que hemos recopilado de otras fuentes de noticias.
Live from New York, it’s Nate Bargatze hosting Saturday Night LiveThe standup stalwart will lead Saturday’s sketches with help from musical guest The Foo Fighters
Leer más »
Oldest radio burst ever found could tell us what exists between galaxiesRahul Rao is a former intern and contributing science writer for Popular Science since early 2021. He covers physics, space, technology, and their intersections with each other and everything else. He lives in London, and is a massive fan of snakes, old genre fiction, trains, and classic Doctor Who, in no particular order.
Leer más »
Traces of Oldest and Largest Solar Storm Found in Buried French ForestAn enormous “Miyake event”—a bombardment of Earth by particles from the sun—hit 14,300 years ago. Such an event today would have devastating effects
Leer más »
Restoration work begins on Anchorage’s oldest standing buildingThe first step in the restoration project is taking down the old bell tower.
Leer más »
Hampshire: Oldest kidney donor celebrates 95th birthdayNicholas Crace donated his left kidney to a stranger in 2012 when he was 83.
Leer más »
The oldest Puget Sound orca: L25 may be approaching 100L25 is bigger than the other orcas in the southern resident pods because she was able to eat well when young, when salmon were more plentiful.
Leer más »