Spacecraft measurements reveal Mechanism of Solar Wind Heating

This is an illustration of the MMS spacecraft measuring the solar wind plasma in the interaction region with the Earth’s magnetic field. Credit: NASA

Queen Mary University of London has led a study which describes the first direct measurement of how energy is transferred from the chaotic electromagnetic fields in space to the particles that make up the solar wind, leading to the heating of interplanetary space.

The study, published in Nature Communications and carried out with University of Arizona and the University of Iowa, shows that a process known as Landau damping is responsible for transferring energy from the electromagnetic plasma turbulence in space to electrons in the solar wind, causing their energisation.

This process, named after the Nobel-prize winning physicist ...

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Platelet ‘Decoys’ Outsmart both Clots and Cancer

Platelet decoys (pink), unlike normal platelets, are not activated by collagen fibers (gray), making them an attractive option for antithrombotic and cancer treatment. Credit: Wyss Institute at Harvard University

Deactivated platelets offer a potential drug-free, reversible antiplatelet therapy. What do heart disease, stroke, sepsis, and cancer have in common, aside from being deadly diseases? They’re all linked to activated platelets. New research has created ‘decoy’ platelets that can both prevent blood clots and keep cancer from spreading.

Several antiplatelet drugs have been developed to combat platelet-related conditions, but their effects are not easily reversible, and patients taking these drugs are at risk of uncontrolled bleeding if injured...

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The 1st Walking Robot that Moves Without GPS


Antbot, the first walking robot that moves without GPS. Credit: Julien Dupeyroux, ISM (CNRS/AMU)

Desert ants are extraordinary solitary navigators. Researchers were inspired by these ants as they designed AntBot, the first walking robot that can explore its environment randomly and go home automatically, without GPS or mapping. This work opens up new strategies for navigation in autonomous vehicles and robotics.

Human eyes are insensitive to polarized light and ultraviolet radiation, but that is not the case for ants, who use it to locate themselves in space. Cataglyphis desert ants in particular can cover several hundreds of meters in direct sunlight in the desert to find food, then return in a straight line to the nest, without getting lost...

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NASA’s Opportunity Rover Mission on Mars Comes to End

This infographic highlights NASA’s twin robot geologists, the Mars Exploration Rovers (MER) Spirit and Opportunity.
Credit: NASA/JPL-Caltech

One of the most successful and enduring feats of interplanetary exploration, NASA’s Opportunity rover mission is at an end after almost 15 years exploring the surface of Mars and helping lay the groundwork for NASA’s return to the Red Planet.

The Opportunity rover stopped communicating with Earth when a severe Mars-wide dust storm blanketed its location in June 2018. After more than a thousand commands to restore contact, engineers in the Space Flight Operations Facility at NASA’s Jet Propulsion Laboratory (JPL) made their last attempt to revive Opportunity Tuesday, to no avail...

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