Part of Aarhus University’s Mars Simulation Laboratory in Denmark, this wind tunnel has been specially designed to simulate the dusty surface of planet Mars. Source: https://phys.org/news/2019-05-tunnel-simulate-dusty-surface-mars.html…
Tag: Wind
Astronomers investigate pulsar wind nebula DA 495
Astronomers have carried out a multiwavelength investigation of a pulsar wind nebula (PWN), designated DA 495, to unveil its mysterious physical nature. Results of the study, based on observations using HAWC and VERITAS ground-based observatories as well as NASA’s NuSTAR spacecraft, are presented in a paper published May 17 on arXiv.org. Source: https://phys.org/news/2019-05-astronomers-pulsar-nebula-da.html…
Some Americans Have Fled The Country To Escape Student Loan Debt
“Some student loan borrowers are packing their bags and fleeing from the U.S. to other countries, where the cost of living is often lower and debt collectors wield less power over them,” reports CNBC: Chad Haag considered living in a cave to escape his student debt. He had a friend doing it. But after some plotting, he settled on what he…
Processes not observed on Earth play major roles in the movement of sand on Mars
Wind has shaped the face of Mars for millennia, but its exact role in piling up sand dunes, carving out rocky escarpments or filling impact craters has eluded scientists until now. Source: https://phys.org/news/2019-05-earth-major-roles-movement-sand.html…
What Chang’e 4 learned from the moon’s far side
Early results from China’s historic 1st landing on the moon’s far side. Chinese scientists have used in situ data from a far side crater to identify materials on the moon’s surface that originated deeper inside the moon. Source: https://earthsky.org/space/what-change-4-learned-from-the-moons-far-side…
Meet Corvus the Crow
Corvus is a small constellation, recognizable for its compact, boxy shape. It’s a fun one! Source: https://earthsky.org/tonight/coming-to-know-corvus-the-crow…
Hidden Winds on Jupiter May Be Messing with Its Enormous Magnetic Field
Jupiter’s magnetic field has changed since the 1970s, and now physicists think they know why it’s happening. Source: https://www.livescience.com/65531-jupiter-magnetic-field-wind-changing.html
‘I Oversaw America’s Nuclear Power Industry. Now I Think It Should Be Banned.’
Friday the Washington Post published an essay by Gregory Jaczko, who served on America’s Nuclear Regulatory Commission from 2005 to 2009 and was its chairman from 2009 to 2012. He says he’d believed nuclear power was worth the reduction they produced in greenhouse emissions — until Japan’s 2011 nuclear meltdown at the Fukushima power plant. “Despite working in the industry for…
Your Internet Data is Rotting
MySpace, which recently lost 50 million files uploaded between 2003 and 2015, is not alone in encountering problems. As the internet grows, batches of old information are increasingly disappearing from it. From a story: Amazon cloud services, for example, also experienced a substantial outage in 2011 and another in 2017. Though temporary, and without actual loss of data, these outages left…
Clouds that look like ocean waves
They’re called Kelvin-Helmholtz clouds, aka billow clouds or shear-gravity clouds, and they look like breaking ocean waves. Source: https://earthsky.org/earth/kelvin-helmholzt-clouds…