We already know that Gale Crater on Mars used to hold a lake or series of lakes a few billion years ago. Now, NASA’s Curiosity rover has found evidence for ancient giant floods that washed through the region as well. Source: https://earthsky.org/space/megafloods-gale-crater-mars-life-curiosity-rover…
Tag: propulsion
The Audacious Plan to Launch a Solar-Powered Rocket Into Interstellar Space
Ars Technica glimpsed a possible future at the Johns Hopkins University Applied Physics Laboratory: a solar simulator “that can shine with the intensity of 20 Suns…” “They think it could be the key to interstellar exploration.” “It’s really easy for someone to dismiss the idea and say, ‘On the back of an envelope, it looks great, but if you actually build…
To Explain Away Dark Matter, Gravity Would Have To Be Really Weird
To discard the theory of dark matter, “you’ll need to replace it with something even more bizarre: a force of gravity that, at some distances, pulls massive objects together and, at other distances, pushes them apart.” That’s how Science magazine describes a new study, adding that “The analysis underscores how hard it is to explain away dark matter” — even though…
NASA to test its SLS megarocket in the coming weeks
The ongoing pandemic has slowed testing for NASA’s Space Launch System megarocket, but the process is resuming and has checked off a key milestone: powering up the core stage. Source: https://earthsky.org/space/nasa-megarocket-sls-tests-core-green-run-hot-fire-test…
Field geology at Mars’ equator points to ancient megaflood
Floods of unimaginable magnitude once washed through Gale Crater on Mars’ equator around 4 billion years ago—a finding that hints at the possibility that life may have existed there, according to data collected by NASA’s Curiosity rover and analyzed in joint project by scientists from Jackson State University, Cornell University, the Jet Propulsion Laboratory and the University of Hawaii. Source: https://phys.org/news/2020-11-field-geology-mars-equator-ancient.html…
Does Jupiter’s moon Europa have geysers? If so, what’s their source?
If watery plumes do burst from Europa’s surface, they might originate not in the moon’s underground ocean, but instead in pockets of brine trapped in the moon’s crust. If that’s so, it could be a source of frustration for those who want to probe Europa’s ocean for possible life. Source: https://earthsky.org/space/jupiter-moon-europa-plumes-salty-water-in-crust…
Does Europa glow in the dark?
The icy surface of Jupiter’s moon Europa may glow on its nightside, the side facing away from the sun. Source: https://earthsky.org/space/jupiter-moon-europa-glows-radiation…
BMW Demos a Powered Wingsuit That Can Fly 186 MPH
Wingsuits normally create a wide surface area of fabric between a skydiver’s legs and from their legs to their arms, substantially slowing their fall. But to create a buzz for the unveiling of BMW’s new iX3 electric SUV, the company’s creative consultancy Designworks “has partnered up with Austrian stuntman Peter Salzmann to unveil a wicked-cool new electric powered wingsuit that can…
Can the EmDrive actually work for space travel?
The EmDrive doesn’t just violate our fundamental understanding of the universe; the experiments that claim to measure an effect haven’t been replicated. When it comes to the EmDrive, keep dreaming. Source: https://www.livescience.com/can-emdrive-space-propulsion-concept-work.html
The International Space Station is 20 and going strong
20 years ago, three astronauts stepped aboard the ISS. It’s since hosted residents from many countries, creating humanity’s first history of living in space. Source: https://earthsky.org/space/20-years-iss-what-its-future-holds-nov-2-2020…