Chinese astronomers report the discovery of DESI-HVS1, which may be an old metal-poor hypervelocity star of galactic center origin. The finding, based on the data from the Dark Energy Spectroscopic Instrument (DESI) and ESA’s Gaia satellite, was detailed in a research paper published April 23 on the arXiv pre-print server.
“The result is more than the creation of a new quantum state. It is a demonstration of a new method for engineering interactions that were previously out of reach,” said Dr. Oana Băzăvan, lead author from the Department of Physics, University of Oxford.
“The fourth-order quadsqueezing interaction was generated more than 100 times faster than expected using conventional approaches. This makes effects that were previously out of reach accessible in practice,” Băzăvan added.
Physicists have long used a trick called “squeezing” to sharpen the fuzzy measurements of the subatomic world. It is why gravitational-wave detectors, like LIGO, can hear black holes colliding across the universe. But for all its utility, ordinary squeezing is a relatively simple, second-order effect.
WASHINGTON — The Defense Advanced Research Projects Agency has awarded contracts to three companies to study concepts for a lunar mission to search for water ice in very low orbits.
DARPA announced last year the Lunar Assay via Small Satellite Orbiter (LASSO) program. LASSO would demonstrate the ability to operate in a very low orbit around the moon while searching for locations on the moon that contain water ice at concentrations greater than 5%.
The mission, the agency stated, would test “sustained and advanced maneuverability” needed to maintain that low orbit, with applications elsewhere in cislunar space. The scientific data from the mission would support both NASA and commercial efforts to use lunar resources.
As we go through life, our brains run different processing modes. Some – the attention and sensory systems – result in very similar experiences of the world: what colour the sky is, how warm the day feels.
But there is another, deeper side to the brain which weaves together your memories, goals, beliefs and emotions into a continuous sense of self. This allows you to experience the world not as it is, but as it matters to you personally.
This unique inner world is supported by the brain’s default mode network (DMN). This links together several areas including in the prefrontal cortex (at the very front of the brain) and the parietal lobe (at the back).
#spacetime
Richard Feynman Explains: Why the Past Isn’t Really Gone.
🌌Ever felt like the past is just a fading memory? Richard Feynman and modern physics say otherwise.
We’re taught that time flows like a river, leaving the past in the dust. But what if \.