This Earth, only home i will ever have had, isn’t truly mine. No, i’m just a passerby here … it might yours if you don’t feel how weird, how wrong it is.

  • 13 Posts
  • 429 Comments
Joined 3 years ago
Cake day: June 13th, 2023
  • A_A@lemmy.worldtoWorld News@lemmy.world•Nerves rattled in Japan as alert for magnitude 9.9 quake withdrawn minutes laterEnglish
    7·
    8 hours ago

    Richter scale
    https://en.wikipedia.org/wiki/Richter_scale
    Richter magnitudes

    10

    Seismologist Susan Hough has suggested that a magnitude 10 quake may represent a very approximate upper limit for what the Earth’s tectonic zones are capable of, which would be the result of the largest known continuous belt of faults rupturing together (along the Pacific coast of the Americas).[…ref…] A research at the Tohoku University in Japan found that a magnitude 10 earthquake was theoretically possible if a combined 3,000 kilometres (1,900 mi) of faults from the Japan Trench to the Kuril–Kamchatka Trench ruptured together and moved by 60 metres (200 ft) (or if a similar large-scale rupture occurred elsewhere). Such an earthquake would cause ground motions for up to an hour, with tsunamis hitting shores while the ground is still shaking, and if this kind of earthquake occurred, it would probably be a 1-in-10,000-year event.

  • A_A@lemmy.worldtoscience@lemmy.world•Space Agencies Are Trying to Keep Astronauts From Losing Their SightEnglish
    5·
    2 months ago

    “Spaceflight-associated neuro-ocular syndrome (SANS) is a collection of eye and brain changes caused by spending prolonged periods in a low-gravity environment, and it impacts around 70 percent of astronauts on the International Space Station, according to NASA. One of the starkest cases is that of NASA astronaut John Phillips, who launched to the ISS (e.i. : he went up into orbit in a space station) in 2005 with 20/20 vision, and splashed down (e.i. : he returned back to the Earth) six months later with his vision at 20/100 - - what’s considered a moderate visual impairment. While he was in space, bodily fluid, uninhibited by gravity, built up in his head, squashing his eyeballs, swelling his optic nerve, and pushing his retina forward.”