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Photo: Jaumann et al (Science (2019))
Photo: Jaumann et al (Science (2019))

Air Force Magazine

Air Force Magazine
Large icebergs float away as the sun rises near Kulusuk, Greenland on Aug. 16. Scientists are hard at work, trying to understand the alarmingly rapid melting of the ice.
Large icebergs float away as the sun rises near Kulusuk, Greenland on Aug. 16. Scientists are hard at work, trying to understand the alarmingly rapid melting of the ice.

Europa Clipper passes key review

SpaceNews
Astrocyte cells like these from the brain of a mouse may differ subtly from those in a human brain.
Astrocyte cells like these from the brain of a mouse may differ subtly from those in a human brain.
A pair of starships train for a mission. They are asked to fire at each other at a specified time, and immediately start their engines in order to dodge each other’s attack. If either of the ships fires too early, it will destroy the other, and this establishes an unmistakable time order between the firing events. If a powerful agent could place a sufficiently massive object, say a planet, closer to one ship it would slow down its counting of time. As a result, the ship farther away from the mass will fire too early for the first one to escape. Credit: Magdalena Zych
A pair of starships train for a mission. They are asked to fire at each other at a specified time, and immediately start their engines in order to dodge each other’s attack. If either of the ships fires too early, it will destroy the other, and this establishes an unmistakable time order between the firing events. If a powerful agent could place a sufficiently massive object, say a planet, closer to one ship it would slow down its counting of time. As a result, the ship farther away from the mass will fire too early for the first one to escape. Credit: Magdalena Zych

Quantum gravity's tangled time

Phys.org

A second planet for Beta Pictoris!

SYFY WIRE
A satellite image of salt deposits on top of Mount Sharp on the surface of Mars. NASA’s Curiosity rover is scheduled to explore them in 2020. Credit: NASA/JPL/University of Arizona
A satellite image of salt deposits on top of Mount Sharp on the surface of Mars. NASA’s Curiosity rover is scheduled to explore them in 2020. Credit: NASA/JPL/University of Arizona

Russian Robot To Visit Space Station

Hackaday
Photo: AMNH/N. Wong and M. Ellison
Photo: AMNH/N. Wong and M. Ellison

Life-like robots soon to be reality

Tech Xplore
Researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences have developed a mathematical framework that can turn any sheet of material into any prescribed shape, using the paper craft kirigami. Credit: Harvard SEAS
Researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences have developed a mathematical framework that can turn any sheet of material into any prescribed shape, using the paper craft kirigami. Credit: Harvard SEAS
The fiddler crab . Credit: Kate Feller, University of Minnesota
The fiddler crab . Credit: Kate Feller, University of Minnesota
Looking at dark matter: this photo is a montage of several images and shows the colliding galaxy clusters collectively known as the “Bullet Cluster” (1E 0657-56). The galaxies visible in optical light in the background image are overlaid with X-rays from the intergalactic gas clouds (pink), as well as the mass distribution calculated from gravitational lensing effects and therefore – indirectly – the dark matter (blue). Credit: NASA/CXC/M. Weiss
Looking at dark matter: this photo is a montage of several images and shows the colliding galaxy clusters collectively known as the “Bullet Cluster” (1E 0657-56). The galaxies visible in optical light in the background image are overlaid with X-rays from the intergalactic gas clouds (pink), as well as the mass distribution calculated from gravitational lensing effects and therefore – indirectly – the dark matter (blue). Credit: NASA/CXC/M. Weiss

A heavyweight candidate for dark matter

Phys.org
The patches developed by scientists at U.C. Berkeley can be produced by printing them on a sheet of plastic.
The patches developed by scientists at U.C. Berkeley can be produced by printing them on a sheet of plastic.
A 3D virtual model of Curiosity is shown inside Gale Crater on Mars. Credit: NASA/JPL-Caltech.
A 3D virtual model of Curiosity is shown inside Gale Crater on Mars. Credit: NASA/JPL-Caltech.
Composite of a cryo-electron microscopy image showing lipid vesicles with embedded Piezo channels, and the Piezo channel structure (top). Topographic image of a single Piezo channel under force as recorded by high-speed atomic force microscopy (circle) and its lateral expansion in the membrane as a function of applied force (right). Credit: Dr. Simon Scheuring
Composite of a cryo-electron microscopy image showing lipid vesicles with embedded Piezo channels, and the Piezo channel structure (top). Topographic image of a single Piezo channel under force as recorded by high-speed atomic force microscopy (circle) and its lateral expansion in the membrane as a function of applied force (right). Credit: Dr. Simon Scheuring

A mechanism for touch

Nature.com
A a stream of fluid from a hydrothermal vent. A huge reservoir of methane that formed without organic material has been discovered.
A a stream of fluid from a hydrothermal vent. A huge reservoir of methane that formed without organic material has been discovered.

Geology creates chemical energy

Cosmos