PhysOrg

Weather better for historic SpaceX launch of NASA astronauts

With the weather looking up, SpaceX and NASA officials vowed Tuesday to keep crew safety the top priority for the nation's first astronaut launch to orbit in nearly a decade.

Flow-through electrodes make hydrogen 50 times faster

Electrolysis, passing a current through water to break it into gaseous hydrogen and oxygen, could be a handy way to store excess energy from wind or solar power. The hydrogen can be stored and used as

Urge to merge: Understanding how cells fuse

Scientists have known for a decade that cells that fuse with others to perform their essential functions—such as muscle cells that join together to make fibers—form long projections that invade the

MAVEN maps electric currents around mars that are fundamental to atmospheric loss

Five years after NASA's MAVEN spacecraft entered into orbit around Mars, data from the mission has led to the creation of a map of electric current systems in the Martian atmosphere.

Can e-learning help stem the threat of invasive alien species such as Japanese Knotweed?

E-learning could be a crucial tool in the biosecurity fight against invasive alien species such as Japanese Knotweed, Zebra Mussels and Signal Crayfish according to a new study published in the

Nanodevices show how cells change with time, by tracking from the inside

For the first time, scientists have introduced minuscule tracking devices directly into the interior of mammalian cells, giving an unprecedented peek into the processes that govern the beginning of

Novel insight reveals topological tangle in unexpected corner of the universe

Just as a literature buff might explore a novel for recurring themes, physicists and mathematicians search for repeating structures present throughout nature.

Warming climate is changing where birds breed: study

Spring is in full swing. Trees are leafing out, flowers are blooming, bees are buzzing, and birds are singing. But a recent study published in Proceedings of the National Academy of Sciences found

Controlling artificial cilia with magnetic fields and light

Researchers from North Carolina State University and Elon University have made artificial cilia, or hair-like structures, that can bend into new shapes in response to a magnetic field, then return to

The detective aboard NASA's Perseverance rover

Mars is a long way from 221B Baker Street, but one of fiction's best-known detectives will be represented on the Red Planet after NASA's Perseverance rover touches down on Feb. 18, 2021. SHERLOC, an

The 'Cow' mystery strikes back: Two more rare, explosive events captured

The 'Cow' is not alone; with the help of W. M. Keck Observatory on Maunakea in Hawaii, astronomers have discovered two more like it—the 'Koala' and a similar mysterious bright object called CSS161010.

Two-dimensional MXene as a novel electrode material for next-generation display

Researchers in the US and Korea reported the first efficient flexible light-emitting diodes with a two-dimensional titanium carbide MXene as a flexible and transparent electrode. These MXene-based

Performing optical logic operations by a diffractive neural network

Optical logical operations have sparked major interest in the past decade since they can enable many applications, particularly those involving high-throughput and on-the-fly data processing such as

Astrophysicists capture new class of transient objects

Move aside, AT2018COW. There is a new astronomical transient in the universe, and it is faster, heavier and brighter at radio wavelengths than its mysterious predecessors.

Astronomers create cloud atlas for hot, Jupiter-like exoplanets

Giant planets in our solar system and circling other stars have exotic clouds unlike anything on Earth, and the gas giants orbiting close to their stars—so-called hot Jupiters—boast the most extreme.

Towards visible-wavelength passively mode-locked lasers in all-fibre format

Mode-locked fibre lasers generating ultrashort pulses with the advantages of robustness, compactness and excellent beam quality are of tremendous interest in applications such as laser material

Chirality-assisted lateral momentum transfer for bidirectional enantioselective separation

Light carrying photon momentum can push and pull microparticles through momentum exchange. This momentum exchange process generates optical forces, which either attracts (conventional optical

What information is coded in bird alarm calls—a new study from Korea

Have you seen small birds nervously jumping up and down the branches and calling at a cat in a park? For a long time, scientists have been interested in what type of information about predators is

Topological insulators feature lossless conduction at the edges

Atomically thin layers of the semimetal tungsten ditelluride conduct electricity losslessly along narrow, one-dimensional channels at the crystal edges. The material is therefore a second-order

Development of electrode material improving the efficiency of salinity gradient energy

Dr. Jeong Nam-Jo of the Korea Institute of Energy Research (KIER), Marine Energy Convergence and Integration Research Team developed synthesis technologies for an electrode material that can directly