What’s It Like Landing on Mars? [Video]

Mars Perseverance Landing

By NASA December 29, 2021 Animation of NASA’s Mars Perseverance Rover landing on Mars. Credit: NASA/JPL-Caltech What’s it like landing on Mars? Tough! But every time we land, we learn more. When NASA’s Perseverance Mars rover descended toward the Red Planet, it was decked out with temperature and pressure sensors that collected critical data about … Read more

Immune System Memory Less Durable After Severe COVID-19

Illustration COVID-19 Antibodies

UT Health San Antonio researchers compared results in less-severe and severe COVID-19 cases one and five months after symptom onset. Infection-fighting B cells retain better memory of the coronavirus spike protein in University Hospital patients who recover from less-severe cases of COVID-19 than in those recovering from severe COVID-19, a new study suggests. Findings by … Read more

Weight Loss in Patients With Obesity Can Significantly Reduce Risk of Severe COVID-19 Complications

Obesity Health Care

Successful weight-loss intervention before infection associated with 60% lower risk of severe disease in patients with obesity. A Cleveland Clinic study shows that among patients with obesity, prior weight loss achieved with bariatric surgery was associated with a 60% lower risk of developing severe complications from COVID-19 infection. The research was published in the journal … Read more

Nanotube Fibers Stand Strong – But for How Long Under Stresses and Strains?

Nanotube Fibers Stand Strong – But for How Long Under Stresses and Strains?

Rice University researchers found that cyclic loading of nanotube fibers leads to strain ratcheting that can eventually lead to the failure of the fiber. Credit: Illustration by Nitant Gupta and Evgeni Penev/Yakobson Research Group Rice scientists calculate how carbon nanotubes and their fibers experience fatigue. Up here in the macro world, we all feel fatigue … Read more

Innovative Energy Carrier of the Future

Innovative Energy Carrier of the Future

The palladium nanoparticles (green) are stabilised by a core of iridium (red). Hydrogen can accumulate on their surface like a kind of chocolate glaze – and can be released again by heating. Credit: DESY, Andreas Stierle An innovative approach could turn nanoparticles into simple reservoirs for storing hydrogen. The highly volatile gas is considered a … Read more

Four Famous Nebulae With Breathtaking Beauty

Four Famous Nebulae With Breathtaking Beauty

By NASA December 29, 2021 Shown here are the Eagle, Omega, Triffid, and Lagoon Nebulae, imaged by NASA’s infrared Spitzer Space Telescope. These nebulae are part of a structure within the Milky Way’s Sagittarius Arm that is poking out from the arm at a dramatic angle. Credit: NASA/JPL-Caltech Nebula [ neb-yuh-luh ]: star-forming cloud of … Read more

New Molecules To Help People Safely Shed Extra Pounds

New Molecules To Help People Safely Shed Extra Pounds

Drugs that promise to help people lose weight have had a checkered past, such as the infamous fen-phen that was pulled from the market in 1997 after reports of heart valve damage. But now, drug company pipelines are filling up with new molecules that aim to help people safely shed extra pounds, according to a … Read more

Tuning a Magnetic Fluid With an Electric Field Creates Complex Controllable Dissipative Patterns

Ferrofluid Pattern

An electric field transforms an iron oxide nanoparticle suspension into a model for the emergence of complex dissipative structures. Researchers at Aalto University have shown that a nanoparticle suspension can serve as a simple model for studying the formation of patterns and structures in more complicated non-equilibrium systems, such as living cells. The new system … Read more

DNAzymes – How Active DNA Biocatalysts That Destroy Unwanted RNA Molecules Work

DNAzymes – How Active DNA Biocatalysts That Destroy Unwanted RNA Molecules Work

A DNAzyme (red) uses its binding arms to dock at a specific location on an RNA strand (yellow) and then cleaves it at its core. High-resolution, real-time NMR, Electron Paramagnetic Resonance and Fluorescence Spectroscopy, as well as Molecular Dynamics Simulations were used to identify the structure and catalytic mechanisms of the DNAzyme. Credit: HHU/Manuel Etzkorn … Read more

NASA Perseverance Rover’s Biggest Moments of 2021 [Video]

NASA Perseverance Mars Rover: To Séítah and Back

NASA’s Perseverance rover, shown in this artistic rendering, will land at Mars’ Jezero Crater in February 2021 and will start gathering soil samples soon after that. Scientists are now concerned about acidic fluids, once on Mars, may have ruined the evidence of life contained in the clays. Credit: NASA/JPL-Caltech A new video looks back on … Read more