The "Science and Space" Thread #2

ekim68

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High-energy cosmic neutrinos traced back to their home quasars



There are billions of tiny particles called neutrinos streaming through your body right now. But where did they come from? Russian researchers have now traced back some ultra-high energy neutrinos to their points of origin – radio flares from raging quasars.

Neutrinos are elementary particles with a neutral charge and almost no mass at all. They’re extremely common, produced in nuclear reactors and weapons, the Sun, supernovae, and cosmic rays interacting with the Earth’s atmosphere.

 

ekim68

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ekim68

Mike
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Why Clouds Form Near Black Holes

But black holes aren’t truly like vacuum cleaners; they don’t just suck up everything that gets too close. While some material around a black hole will fall directly in, never to be seen again, some of the nearby gas will be flung outward, creating a shell that expands over thousands of years. That’s because the area near the event horizon is extremely energetic; the high-energy radiation from fast-moving particles around the black hole can eject a significant amount of gas into the vastness of space.

Scientists would expect that this outflow of gas would be smooth. Instead, it is clumpy, extending well beyond 1 parsec (3.3 light-years) from the black hole.
updated_quasar_with_labels.jpg
 

ekim68

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NASA crowdsourcing helps build a better Moon digging robot


NASA’s Artemis program will eventually need robots to help live off the lunar soil, and it’s enlisting help from the public to make those robots viable. The space agency has picked winners from a design challenge that tasked people with improving the bucket drums RASSOR (Regolith Advanced Surface Systems Operations Robot) will use to dig on the Moon. The victors all had clever designs that should capture lunar regolith with little effort — important when any long-term presence might depend on bots like this.
 

ekim68

Mike
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ekim68

Mike
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15 trillion quantum entangled atoms make a record-breaking hot mess


is a phenomenon that’s as bizarre as it is fragile. Entangled particles are thought to lose this inexplicable link when exposed to outside factors. But now, physicists have managed to produce hot clouds of trillions of entangled atoms, breaking quantity records and showing that entanglement isn’t as fragile as previously thought.

Pairs or groups of particles can become so intertwined that measuring the state of one will instantly change properties of the others, no matter how far apart they are. That sounds weird enough already, but the implications threaten to undo our entire understanding of physics.
 

ekim68

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Top Ten Discoveries from SOFIA


Ten years ago, NASA’s telescope on an airplane, the Stratospheric Observatory for Infrared Astronomy, or SOFIA, first peered into the cosmos. Since the night of May 26, 2010, SOFIA’s observations of infrared light, invisible to the human eye, have made many scientific discoveries about the hidden universe.
 

ekim68

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Galactic cosmic rays now available for study on Earth, thanks to NASA


To better understand and mitigate the health risks faced by astronauts from exposure to space radiation, we ideally need to be able to test the effects of Galactic Cosmic Rays (GCRs) here on Earth under laboratory conditions. An article publishing on May 19, 2020 in the open access journal PLOS Biology from Lisa Simonsen and colleagues at the NASA Langley Research Center, USA, describes how NASA has developed a ground-based GCR Simulator at the NASA Space Radiation Laboratory (NSRL), located at Brookhaven National Laboratory.
 

ekim68

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Images with a "twist" could be first showing birth of an exoplanet


An international team of astronomers led by Anthony Boccaletti of the Observatoire de Paris has found what may be the first images of a planet being born. Based on observations by the European Southern Observatory’s Very Large Telescope (ESO’s VLT), images of the young star AB Aurigae located 520 light-years away in the constellation of Auriga show a "twist" in the dust and gas cloud surrounding the star that indicate the presence of a planet being formed.

assets.newatlas.com.jpg
 

ekim68

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Graphene shows promise as solar sail material in ESA tests


ESA engineers are looking at using the world's thinnest known material to build lighter, more efficient solar sails. By making sails out of one-atom-thick graphene sheets, the space agency aims to make sails capable of propelling unmanned interstellar missions.

Solar sails have been considered on and off as a way of propelling spacecraft ever since Konstantin Tsiolkovsky first put forward the idea early in the 20th century. By using sunlight or lasers aimed at gigantic, gossamer-like sails, the pressure of photons hitting the sails could generate thrust, pushing the craft along like a sailing ship.


 

ekim68

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Space Station receives the last of NASA's science racks after 19 years


One of the longer chapters of the International Space Station has come to a close. NASA has sent the last of its 11 ExPRESS (Expedite the Processing of Experiments to the Space Station) science racks to the orbiting facility, 19 years after sending the first two. They don’t look like much, but they provide the power, storage, climate control and communications for up to 10 small payloads — they’re key to many of the experiments that run aboard the ISS and will help the station live up to its potential research capabilities.
 

RT

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NASA and SpaceX to launch astronauts into orbit this week on Crew Dragon spacecraft

Scheduled to be broadcast live starting at 2:00 p.m. EDT on Discovery, space.com and likely NASA TV.

On Wednesday (May 27) at 4:33 p.m. EDT (2033 GMT), veteran NASA astronauts Bob Behnken and Doug Hurley will launch as co-commanders on SpaceX's Crew Dragon vehicle, which will lift off on a Falcon 9 rocket from NASA's Kennedy Space Center in Florida. The mission, known as Demo-2, will fly the astronauts to the International Space Station. They are scheduled to arrive at the space station on May 28 and could stay in space anywhere from one to four months.

Demo-2 will be the first crewed launch to orbit from American soil since NASA's shuttle program ended in 2011. In fact, Hurley was on the crew for both that final shuttle mission (STS-135) and the upcoming mission. [\quote]
 

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