More than a year after NASA’s Mars InSight lander touched down in a pebble-filled crater on the Martian equator, the rusty red planet is now serving up its meteorological secrets: Gravity waves, surface swirling “dust devils,” and the steady, low rumble of infrasound, Cornell and other researchers have found. Source: https://phys.org/news/2020-02-insight-gravity-rumbles-devilish.html…
Tag: Infrasound
Mystery Sounds From Storms Could Help Predict Tornadoes
Mysterious rumbles that herald tornadoes could one day be used to predict when and where they will strike, according to researchers. From a report: Storms emit sounds before tornadoes form, but the signals at less than 20Hz are below the limit for human hearing. What causes these rumbles has also been a conundrum. Now researchers said they have narrowed down the…
Germany’s Giant Windmills Are Wildly Unpopular
“Local politics are a bigger problem for renewable energy growth than competition from fossil fuels,” warns a Bloomberg columnist: It’s getting harder to get permission to erect the turbine towers. Local regulations are getting stricter. Bavaria decided back in 2014 that the distance between a wind turbine and the nearest housing must be 10 times the height of the mast, which,…
Small asteroid C0PPEV1 paid a heavy price for almost striking Earth yesterday
Earth’s gravity bent the trajectory of asteroid C0PPEV1 so much yesterday – as this asteroid swept only 3,852 miles (6,200 km) above Africa – that its farthest point from the sun has now shifted out to the asteroid belt between Jupiter and Mars. Source: https://earthsky.org/space/near-earth-asteroid-close-pass-oct-2019-c0ppev1…