This metamaterial-based e-skin integrates multiple sensory inputs, including pre-contact detection and self-powered operation, advancing wearable and robotic technologies.
“In recent years scientists have found that Mars has an annual cycle that is much more dynamic than people expected 10 or 15 years ago,” said Dr. John Clarke.
What happened to all the liquid water on Mars and what can this teach us about Earth-like exoplanets? This is what a recent study published in Science Advances hopes to address as an international team of researchers investigated the atmospheric and atomic processes responsible for Mars losing its water over time. This study holds the potential to help researchers better understand the evolution of Mars, specifically regarding the loss of water, and what implications this holds for Earth-like exoplanets.
For the study, the researchers used a combination of data from NASA’s Mars Atmosphere and Volatile Evolution (MAVEN) and Hubble Space Telescope (HST) spacecraft to measure the ratio of hydrogen and deuterium that escapes from Mars over three Martian years, with each Martian year comprising 687 Earth days. Deuterium is also called “heavy hydrogen” since it is a hydrogen atom with a neutron in its nucleus, making its mass greater than hydrogen.
Since deuterium is heavier, this means hydrogen is lost to space faster, and measuring this present-day loss can help scientists determine how much was lost in Mars’s ancient past. Additionally, Mars’ orbit is more elliptical than Earth, meaning it orbits farther away from the Sun at certain times of the year, and this could also contribute to hydrogen loss, as well. In the end, the team found that this ratio changes as Mars is closer to the Sun and farther away, which challenges longstanding hypotheses regarding Mars’s atmospheric evolution.
Understand the role they play in your body and how they affect your health. Watch now to expand your knowledge on oligosaccharides!
Link for the video on What Are Disaccharides? : • What Are Disaccharides?
References: Wilson and Walker 7th edition.
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A central aim of the ATLAS Higgs physics program is to measure, with increasing precision, the strength of interactions of the Higgs boson with elementary fermions and bosons.
Atoms on the edge
Posted in particle physics, quantum physics
Typically, electrons are free agents that can move through most metals in any direction. When they encounter an obstacle, the charged particles experience friction and scatter randomly like colliding billiard balls.
But in certain exotic materials, electrons can appear to flow with single-minded purpose. In these materials, electrons may become locked to the material’s edge and flow in one direction, like ants marching single-file along a blanket’s boundary. In this rare “edge state,” electrons can flow without friction, gliding effortlessly around obstacles as they stick to their perimeter-focused flow. Unlike in a superconductor, where all electrons in a material flow without resistance, the current carried by edge modes occurs only at a material’s boundary.
Now MIT physicists have directly observed edge states in a cloud of ultracold atoms. For the first time, the team has captured images of atoms flowing along a boundary without resistance, even as obstacles are placed in their path. The results, which appear in Nature Physics (“Observation of chiral edge transport in a rapidly rotating quantum gas”), could help physicists manipulate electrons to flow without friction in materials that could enable super-efficient, lossless transmission of energy and data.
Discovering Earth’s third global energy Field. 🌀
A NASA-led rocket team has finally discovered the long-sought electric field driving particles from Earth’s atmosphere into space ‼️
First hypothesized over 60 years ago, it is “an agent of chaos” whose impacts are still not fully known: go.nasa.gov/3XcDDLD
In hospital operating rooms and intensive care units, propofol is a drug of choice, widely used to sedate patients for their comfort or render them fully unconscious for invasive…
Propofol works quickly and is tolerated well by most patients when administered by an anesthesiologist.
But what’s happening inside the brain when patients are put under and what does this reveal about consciousness itself?
Investigators at Michigan Medicine, who are studying the nature of consciousness, have successfully used the drug to identify the intricate brain geometry behind the unconscious state, offering an unprecedented look at brain structures that have traditionally been difficult to study.
Researchers have discovered that T cells in the body can be reprogrammed to slow down and even reverse aging. Using a mouse model, scientists found T cells can be used to fight off another type of cell that contributes to the aging process.
