Space Station Mold Survives High Doses of Ionizing Radiation

Mold grows on the International Space Station on a panel where exercise clothes were hung to dry.
Credit: NASA

New research presented at the 2019 Astrobiology Science Conference in Bellevue, Wa. The International Space Station, like all human habitats in space, has a nagging mold problem. Astronauts on the ISS spend hours every week cleaning the inside of the station’s walls to prevent mold from becoming a health problem. New research finds mold spores may also survive on the outside walls of spacecraft.

Spores of the two most common types of mold on the ISS, Aspergillus and Pennicillium, survive X-ray exposure at 200 times the dose that would kill a human, according to Marta Cortesão, a microbiologist at the German Aerospace Center (DLR) in Cologne, who will present the new resear...

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Physicists use Light Waves to Accelerate Supercurrents, enable Ultrafast Quantum Computing

An illustration shows light-induced acceleration of supercurrents, enabling ultrafast quantum computing
Jigang Wang and his collaborators have demonstrated light-induced acceleration of supercurrents, which could enable practical applications of quantum mechanics such as computing, sensing and communicating. Larger image. Image courtesy of Jigang Wang.

Scientists have discovered that terahertz light – light at trillions of cycles per second – can act as a control knob to accelerate supercurrents. That can help open up the quantum world of matter and energy at atomic and subatomic scales to practical applications such as ultrafast computing.

Jigang Wang patiently explained his latest discovery in quantum control that could lead to superfast computing based on quantum mechanics: He mentioned light-induced superconductivity without energy gap...

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NASA’s TESS mission finds its Smallest Planet yet

The three planets discovered in the L98-59 system by NASA’s Transiting Exoplanet Survey Satellite (TESS) are compared to Mars and Earth in order of increasing size in this illustration.
Credit: NASA’s Goddard Space Flight Center

NASA’s Transiting Exoplanet Survey Satellite (TESS) has discovered a world between the sizes of Mars and Earth orbiting a bright, cool, nearby star. The planet, called L 98-59b, marks the tiniest discovered by TESS to date.

Two other worlds orbit the same star. While all three planets’ sizes are known, further study with other telescopes will be needed to determine if they have atmospheres and, if so, which gases are present...

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Heart-Healthy Effects of Soy Consistent over Time

Photo by Yuttadanai Mongkonpun, Dreamstime
PHOTO BY YUTTADANAI MONGKONPUN, DREAMSTIME

Researchers have found a consistent cholesterol-lowering effect for soy protein, with pooled data from dozens of clinical trials that span the last two decades. The study calls into question the US Food and Drug Administration’s current proposal to revoke the health claim for soy protein and heart disease.

“At no time since the original claim for soy as a reducer of serum cholesterol has its ability been in question,” says David Jenkins, professor of nutritional sciences and of medicine at U of T. “It’s been consistent since 1999. The data have not changed.”

The researchers showed a reduction from soy in both total cholesterol and low-density lipoprotein cholesterol, which can damage the heart...

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