A football field of shelving: recordkeeping and standardization at the Royal Observatory, Greenwich
Peer-Reviewed Publication
Updates every hour. Last Updated: 25-Apr-2025 18:08 ET (25-Apr-2025 22:08 GMT/UTC)
This paper reports the discovery of a high-velocity star J07 ejected from globular cluster M15 approximately 21 million years ago, providing strong evidence for the presence of an IMBH constrained to within a few AU of the central region of M15.
The Technion researchers revealed the process that photons undergo from the stage in which they are introduced into the nanoscale system until they exit the measurement system, and found that this transition enriches the space of states that the photons can reside in. In a series of measurements, the researchers mapped those states, entangled them with the same property unique to nanoscale systems, and confirmed the correspondence between photon pairs that indicates quantum entanglement.
This is the first discovery of a new quantum entanglement in more than 20 years, and it may lead in the future to the development of new tools for the design of photon-based quantum communication and computing components, as well as to their significant miniaturization.
New research from Portland State University focused on identifying signs of life — biosignatures — in extreme environments here on Earth. Researchers investigated whether microbial active motion (e.g., swimming), morphology and optical properties could serve as biosignatures using in situ video microscopy at a range of extreme field sites, many of which had not been previously explored with this technique. These environments are considered strong analogs for extraterrestrial settings, such as those found on other planets and moons in our solar system. The researchers found that at least one of the three biosignatures (motion, morphology, or optical properties) was present in every environmental sample tested, ranging from hot deserts to Arctic ice and alkaline springs. This supports the idea that even in extreme environments, some fraction of microbes exhibit detectable life-indicating characteristics.
WASHINGTON, D.C. — From airborne research to quantum navigation and space robotics, the U.S. Naval Research Laboratory (NRL) will showcase emerging defense technologies at the Sea-Air-Space (SAS) Conference and Exposition in booth 347, held at the Gaylord National Resort and Convention Center in National Harbor, Md., April 7-9.