For the first time, astronomers have spotted an exoplanet by detecting radio waves generated by interactions with its parent star Source: https://www.newscientist.com/article/2233972-an-exoplanet-is-generating-radio-waves-from-its-red-dwarf-sun/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home…
Tag: radio waves
Activate this ‘Bracelet of Silence,’ and Alexa Can’t Eavesdrop
Ben Zhao and his wife, Heather Zheng, computer science professors at the University of Chicago, designed what they are calling a “bracelet of silence” that will jam the Echo or any other microphones in the vicinity from listening in on the wearer’s conversations. The New York Times reports: The bracelet is like an anti-smartwatch, both in its cyberpunk aesthetic and in…
Mysterious fast radio burst repeats in 16-day rhythm
For the first time, a fast radio burst has been found to be repeating, in a regular 16-day cycle. The baffling detection from the CHIME radio telescope deepens the mystery of these bizarre intergalactic objects. Source: https://earthsky.org/space/mysterious-fast-radio-burst-repeats-in-16-day-rhythm…
We’ve finally spotted a pattern in mysterious radio blasts from space
Strange, powerful blasts of radio waves from space called fast radio bursts sometimes flash repeatedly, but never with any discernible pattern – until now Source: https://www.newscientist.com/article/2232460-weve-finally-spotted-a-pattern-in-mysterious-radio-blasts-from-space/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home…
Weird clumps of air that disrupt radio signals found on Mars
In our atmosphere, strange dense patches of charged air sometimes bounce radio waves around and disrupt radar – and now they have been spotted on Mars Source: https://www.newscientist.com/article/2232185-weird-clumps-of-air-that-disrupt-radio-signals-found-on-mars/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home…
US Tests Ways To Sweep Space Clean of Radiation After Nuclear Attack
sciencehabit quotes a report from Science Magazine: The U.S. military thought it had cleared the decks when, on 9 July 1962, it heaved a 1.4-megaton nuclear bomb some 400 kilometers into space: Orbiting satellites were safely out of range of the blast. But in the months that followed the test, called Starfish Prime, satellites began to wink out one by one,…
Worried About 5G’s Health Effects? Don’t Be
There are real concerns about the way 5G is being deployed in the US, including security issues, the potential to interfere with weather forecasting systems, and the FCC steamrolling local regulators in the name of accelerating the 5G rollout. But concerns over the potential health impacts of 5G are overblown. From a report: If you weren’t worried about prior generations of…
GISMO instrument maps inner Milky Way, sees cosmic ‘candy cane’
A feature resembling a candy cane appears at the center of this colorful composite image of our Milky Way galaxy’s central zone. But this is no cosmic confection. It spans 190 light-years and is one of a set of long, thin strands of ionized gas called filaments that emit radio waves. Source: https://phys.org/news/2019-12-gismo-instrument-milky-cosmic-candy.html…
Anisotropic radio-wave scattering in the solar corona
Solar radio emission is produced in the turbulent medium of the solar atmosphere, and its observed properties (source position, size, time profile, polarization, etc.) are significantly affected by the propagation of the radio waves from the emitter to the observer. Scattering of radio waves on random density irregularities has long been recognized as an important process for the interpretation of radio…
Outback telescope captures Milky Way center, discovers remnants of dead stars
A radio telescope in the Western Australian outback has captured a spectacular new view of the center of the Milky Way galaxy. The image from the Murchison Widefield Array (MWA) telescope shows what our galaxy would look like if human eyes could see radio waves. Source: https://phys.org/news/2019-11-outback-telescope-captures-milky-center.html…