US space agency NASA has forecast a recently-spotted asteroid, 2020 SW, for a fly-by on Thursday. It will fly by at an agonising distance of around 17,000 miles – closer than a weather satellite.
Data from Southwest Research Institute-led instruments aboard ESA’s Rosetta spacecraft have helped reveal auroral emissions in the far ultraviolet around a comet for the first time.
At Earth, auroras are formed when charged particles from the Sun follow our planet’s magnetic field lines to the north and south poles. There, solar particles strike atoms and molecules in Earth’s atmosphere, creating shimmering curtains of colorful light in high-latitude skies. Similar phenomena have been seen at various planets and moons in our solar system and even around a distant star. SwRI’s instruments, the Alice far-ultraviolet (FUV) spectrograph and the Ion and Electron Sensor (IES), aided in detecting these novel phenomena at comet 67P/Churyumov-Gerasimenko (67P/C-G).
“Charged particles from the Sun streaming towards the comet in the solar wind interact with the gas surrounding the comet’s icy, dusty nucleus and create the auroras,” said SwRI Vice President Dr. Jim Burch who leads IES. “The IES instrument detected the electrons that caused the aurora.”
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Physicist Jim Al-Khalili routinely deals with the strangest subject in all of science — quantum physics, the astonishing and perplexing theory of sub-atomic particles. But now he’s turning his attention to the world of nature. Can quantum mechanics explain the greatest mysteries in biology?
His first encounter is with the robin. This familiar little bird turns out to navigate using one of the most bizarre effects in physics — quantum entanglement, a process which seems to defy common sense. Even Albert Einstein himself could not believe it.
After repurposing facial recognition and deepfake tech to study galaxies and the Higgs boson, physicists think they can help shape the responsible use of AI.
Featured image: @Carroll__Burns/Twitter
At the Q2 2020 Earnings Call, Tesla CEO Elon Musk announced the location of the new factory. The Gigafactory for the production of the Semi, Cybertruck, Model Y, and Model 3 will be built in Austin, Texas and will be Tesla’s largest factory yet.
Newly published results offer compelling evidence that hydrogen is a metal at extremely high pressures. But is the research enough to convince the field at large that metallic hydrogen exists?
Andy takes a closer look at one of his favourite demos from the 2012 Christmas Lectures, bringing together a levitating superconductor and a bewildering Möbius strip made from over 2,000 magnets.
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The following is adapted from Lewis’ The Rise: Creativity, the Gift of Failure, and the Search for Mastery, published by Simon & Schuster.
“It says, ‘No entrance,’ but you just enter,” physicist Andre Geim told me about the graphite mines in the mountains where he often hikes. His comment embodied the insouciance behind his Nobel Prize–winning physics experiment and his habit of experimenting deliberately outside of his area of expertise.
Using superconductors, scientists can levitate small creatures such as fruit flies for long periods of time.
Scientists who want to study the effects of weightlessness have always had precious few options. There’s the “vomit comet,” NASA’s Weightless Wonder plane that creates a few seconds of weightlessness during parabolic flights. Or they could convince the space agency to actually launch their experiments into the great beyond.
But there might be an easier and cheaper way: levitation.
Continue reading “To Study Zero Gravity, Levitate Fruit Flies” »
OneWeb is set to resume launches with Arianespace in December to build out its Low-Earth Orbit (LEO) satellite internet constellation. The satellite operator announced Monday that Arianespace will provide 16 more launches, each placing another 34 to 36 satellites into OneWeb’s constellation.
This update comes as OneWeb is in the midst of a restructuring deal with the U.K. government, Bharti Global Limited, and Hughes Network Systems after filing for Chapter 11 in March. The U.K. government and Bharti Global Limited announced in July they formed a consortium to acquire OneWeb, each providing $500 million. Hughes joined the consortium in July with a $50 million investment. The deal is still subject to regulatory approval and is expected to close by the Fourth Quarter of 2020.
OneWeb has 74 satellites in orbit and its return-to-flight launch in December will increase the fleet to 110 satellites. The company plans to complete the deployment of its constellation by the end of 2022, and start commercial services by the end of 2021. The initial service regions above 50 degrees North latitude will include the United Kingdom, Alaska, Northern Europe, Greenland, Iceland, the Arctic seas and Canada.
