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Researchers used the powerful X-rays of the Advanced Photon Source to see the preserved remains of an ancient Egyptian girl without disturbing the linen wrappings. The results of those tests point to a new way to study mummified specimens.

The mummified remains of ancient Egyptians hold many secrets, from the condition of the bodies to the artifacts placed within the burial garments. Now a team of researchers has found a way to unwrap those secrets, without unraveling the mummies themselves.

Three years ago, researchers from Northwestern University, in preparation for an exhibit on campus, carefully transported a 1, 900-year-old mummy to the Advanced Photon Source (APS), a U.S. Department of Energy (DOE) Office of Science User Facility at DOE ’s Argonne National Laboratory. There scientists used powerful X-ray beams to peer inside the layers of linen and resin to examine the 2, 000-year-old bones and objects buried within.

Optics researchers from The University of Queensland and Nokia Bell Labs in the US have developed a new technique to demonstrate the time reversal of optical waves, which could transform the fields of advanced biomedical imaging and telecommunications.

Time reversal of waves in physics doesn’t mean traveling back to the future; it describes a special type of wave which can retrace a path backwards through an object, as if watching a movie of the traveling wave, played in reverse.

UQ’s Dr. Mickael Mounaix and Dr. Joel Carpenter, together with Dr. Nick Fontaine’s team at Nokia Bell Labs, are the first to demonstrate this time reversal of optical waves, using a new device they developed that allows full 3D control of light through an optical fiber.

The only total solar eclipse of 2020 dazzled spectators in South America, and some lucked out even as overcast skies threatened to put a damper on an incredible celestial event.

The so-called Southern Cone has now been treated to two total solar eclipses in back-to-back years. But each event was unique. Both eclipses were visible in Chile and Argentina, but the 2019 total solar eclipse happened in the wintertime for the Southern Hemisphere and in the late afternoon. This meant that the sun was low on the horizon, so the sky didn’t get as dark as it did this year.

YouTube has gone down, with the video site failing to load at all.

Users simply see a message reading “oops”, a note saying that “something went wrong” and a picture of a monkey carrying a tool.

Some users did find that they were able to get onto the site by using incognito mode, and that the issue appeared to be a result of logging in or trying to visit on a browser that had already been logged in.

As much of the aviation industry fights to survive the coronavirus pandemic, some economists and engineers see the crisis as an opportunity to use stimulus funds to propel air travel to a carbon-neutral future. Photo illustration: George Downs.

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