On February 9, 1913, lucky observers witnessed the Great Meteor Procession, when bright meteors soared horizontally across the sky in a stately marching rank for minutes at a time. Source: https://earthsky.org/space/this-date-in-science-great-meteor-procession-of-february-9-1913…
Tag: fire
Get ready for Perseverance’s landing on Mars February 18
Some call attempts to land on Mars “7 minutes of terror.” The Perseverance mission will provide the most detailed video and photos of a landing yet. We’ll watch ourselves land on another planet, for the first time ever. Source: https://earthsky.org/space/get-ready-nasa-perseverance-landing-feb2021…
How to prevent crashes between orbiting satellites
Thousands more satellites will soon orbit Earth. We need better rules to prevent space crashes. Source: https://earthsky.org/space/satellites-prevent-space-crashes…
What does ‘luminosity’ mean in particle physics?
Even on the hottest and driest days, rays from the sun are too weak to ignite a fire. But with a magnifying glass (or, in some unfortunate cases, a glass garden ornament), you can focus sunlight into a beam bright enough to set tinder ablaze. …
Elon Musk Grills Robinhood CEO Over GameStop Trading Freeze: ‘The People Demand Answers’
Elon Musk had just wrapped up a wide-ranging 90-minute interview on the audio chat app Clubhouse early on Monday, when he threw the hosts a curveball. “Do you want to hear the real story from Vlad [from] Robinhood about what happened on the Street with GameStop?” Musk asked. He advised the moderators to click on Robinhood CEO Vladimir Tenev so he…
A 25-Year-Old Bet Comes Due: Has Tech Destroyed Society?
“Twenty five years ago I made a bet in the pages of Wired. It was a bet whether the world would collapse by the year 2020.” So writes the 68-year-old founding executive editor of Wired magazine, Kevin Kelly. He’d made the bet with a “Luddite-loving doomsayer,” according to Wired — author Kirkpatrick Sale. “Sale while a student in the 1950s co-wrote…
Another terrible year for wildfires and smoke in the US in 2020
Wildfires burned more than 10 million acres in the United States during the 2020 season. It was the worst season on record. Source: https://earthsky.org/earth/us-2020-wildfire-season-record-bad…
SpaceX is about to run its final test of Starship SN9 before 1st launch
SpaceX plans to test-fire its enormous Starship prototype’s engines in Boca Chica, Texas at some point today (Jan. 20). Source: https://www.livescience.com/spacex-starship-static-fire-test.html
Boeing Curbed Rocket Test Over Hydraulics Issue, NASA Says
Boeing’s test of the largest rocket in U.S. history ended earlier than expected on Jan. 16 because a hydraulic-system setting exceeded a preset limit, dealing another setback to the company’s space ambitions. From a report: The first firing of all four RS-25 engines on the Space Launch System rocket ended just 67.2 seconds into the planned eight-minute test. The so-called hot…
‘Major Component Malfunction’ Ends SLS Rocket Test Early. NASA Considers New Timeline
“NASA’s rocket charged with taking the agency back to the moon fired its four main engines Saturday afternoon, but the test in Mississippi was cut short after a malfunction caused an automatic abort,” reports Florida Today… “We did get an MCF on engine four,” a control room member said less than a minute into the test fire, using an initialism that…