- PhysOrg
- 21/11/4 23:27
Four astronauts could leave the International Space Station on Sunday without their replacement team having arrived to take over, NASA announced Thursday, but the timing remains uncertain due to weather conditions.
199 articles from THURSDAY 4.11.2021
Four astronauts could leave the International Space Station on Sunday without their replacement team having arrived to take over, NASA announced Thursday, but the timing remains uncertain due to weather conditions.
In the 1998 Hollywood blockbuster "Armageddon," Bruce Willis and Ben Affleck race to save the Earth from being pulverized by an asteroid.
NGC 2438 is a planetary nebula, formed after the death of a Sun-like star. The medium-sized star would have expelled its outer layers of gas into space as it died, leaving behind a white-dwarf core. A halo of glowing gas over 4.5 light-years across surrounds the nebula's brighter inner ring. Many round or nearly round planetary nebulae display these halo structures, and astronomers have been...
It is essential for cells to control precisely which of the many genes of their genetic material they use. This is done in so-called transcription factories, molecular clusters in the nucleus. Researchers of Karlsruhe Institute of Technology (KIT), Friedrich-Alexander-Universität Erlangen-Nuremberg (FAU), and Max Planck Center for Physics and Medicine (MPZPM) have now found that the formation of...
Lawrence Livermore National Laboratory (LLNL) scientists have found that atomic disorder in certain boron-based hydrogen storage systems can potentially improve the rate of hydrogen uptake.
Water plays several important roles within the human body, even affecting the DNA in our cells. The entire surface of a DNA double helix is coated in layers of water molecules. This sheath of water attaches to the genetic material through hydrogen bonds, made by sharing hydrogen atoms between molecules. Through hydrogen bonds, water can influence how DNA takes shape and interacts with other...
NASA's Cooperative Autonomous Distributed Robotic Exploration (CADRE) project is developing small robots programmed to work autonomously as a team to explore the lunar surface.
Researchers have identified several metabolites in the blood whose levels are altered by coffee consumption. Levels of 3 of these coffee-related metabolites were significantly associated with individuals' risk of developing chronic kidney disease.
Blocking a molecule that draws sensory nerves into musculoskeletal injuries prevents heterotopic ossification (HO), a process in which bone abnormally grows in soft tissue during healing, researchers reported. The findings suggest that drugs currently being tested in clinical trials to inhibit this molecule for pain relief could also protect against this challenging condition.
Theorists have observed a rare phenomenon called the quantum anomalous Hall effect in a very simple material. Previous experiments have detected it only in complex or delicate materials.
Researchers have developed a method to validate test drives through highly realistic driving simulation studies and to substantially simplify the approval process for automated driving systems.
While rubbing up against a shark sounds like a risky move if you're a fish, a collaborative research team found that this behavior is frequent, widespread, and could play a previously unappreciated important ecological role for aquatic animals.
Researchers have developed a control framework that enables robots to understand what it means to help or hinder one another and incorporate social reasoning into the tasks they are accomplishing.
Scientists have taken a close look at how lignocellulose -- or plant biomass -- can be used for optical applications, potentially replacing commonly used materials like sand and plastics.
While only a mere 4% of the atmosphere, carbon dioxide plays a vital role in sustaining life on our planet. However, if this delicate balance is disrupted, excess carbon dioxide can pose a formidable threat to our environment and the living beings that reside within.
New findings help better understand the how one of the most commonly mutated genetic drivers of cancer passes signals that cause the disease.
A new finding offers researchers a direct way to investigate oxidative stress and its damaging effects in aging, cancer and other diseases.
New climate pledges issued ahead of COP26 boost the chances of limiting global warming to 2 degrees, according to a new study.
Because of their high strength and light weight, carbon-fiber-based composite materials are gradually replacing metals for advancing all kinds of products and applications, from airplanes to wind turbines to golf clubs. But there's a trade-off. Once damaged or compromised, the most commonly-used carbon fiber materials are nearly impossible to repair or recycle.
Every cell is a master builder, able to craft useful and structurally complex molecules, time and again and with astonishingly few mistakes. Scientists are keen to replicate this feat to build their own molecular factories, but first they'll need to understand it.
Spain's environment ministry on Thursday unveiled a roadmap for regenerating the stricken Mar Menor, one of Europe's largest saltwater lagoons that is slowly dying from agricultural pollution.
A US federal judge on Thursday ruled against Blue Origin brought by Jeff Bezos' company in a bid to overturn a NASA contract awarded to rival SpaceX, founded by Elon Musk, to build the next craft for Moon landings.
SpaceX's next crew flight is off until at least next week, as NASA debates whether to bring astronauts back from the International Space Station before launching their replacements.
As our world adapts to climate change, a renewed focus on social vulnerability is critical to supporting affected communities, according to a study by University of Alberta urban planning experts.
Over 100 nations have issued new commitments to reduce greenhouse gas emissions ahead of the United Nations Conference of the Parties, or COP26, currently underway in Glasgow, Scotland.
Many of the processes that keep us alive also put us at risk. The energy-producing chemical reactions in our cells, for example, also produce free radicals—unstable molecules that steal electrons from other molecules. When generated in surplus, free radicals can cause collateral damage, potentially triggering malfunctions such as cancer, neurodegeneration, or cardiovascular disease.
A new study published today by journal PLOS ONE has revealed that mountaintop removal mining poses a more serious and widespread threat to endangered species and people than was previously understood. The researchers from Defenders of Wildlife's Center for Conservation Innovation (CCI) and conservation technology nonprofit SkyTruth, combine water-quality data with satellite imagery of mountaintop...
Using nanopore DNA sequencing technology, researchers from TU Delft and the University of Illinois have managed to scan a single protein. By slowly moving a linearized protein through a tiny nanopore, one amino acid at the time, the researchers were able to read off electric currents that relate to the information content of the protein. The researchers published their proof-of-concept in Science...
Invasive species cause biodiversity loss and about $120 billion in annual damages in the U.S. alone. Despite plentiful evidence that invasive species can change food webs, how invaders disrupt food webs and native species over time has remained unclear.
Light with sub-millimeter and far-infrared wavelengths from deep space can travel long distances, penetrating right through dust clouds, and bring us information about the history of the universe and the origin of galaxies, stars and planets. However, the long journey has weakened these signals, and we require sensitive detectors operating at millikelvin temperatures on a space instrument.