5 ms·

The narrator explains why getting HD video would be impractical, but I disagree that we get the same experience from panning stills. imagine seeing the swirlin

by hijp 6y ago

The narrator explains why getting HD video would be impractical, but I disagree that we get the same experience from panning stills. imagine seeing the swirling dust, shifting sands, the bumps and parallax from a moving rover. that would be so cool!

cpayne624 6y ago
Parallax, maybe, but no wind = no swirling dust or shifting sands, no?
- pier25 6y ago
  But there is wind, and storms.
- jessriedel 6y ago
  There is in fact wind. Only ~1% as much air as Earth, but it's sufficient to support phenomena like dust devils. https://science.nasa.gov/science-news/science-at-nasa/2005/14jul_dustdevils https://science.nasa.gov/science-news/science-at-nasa/2005/1... Of course, it's very weak, so it couldn't push over a spacecraft or building like in "The Martian", but I suspect sands shifts on a very slow timescale. I'm not sure.
  - DiogenesKynikos 6y ago
    There are "dust devils" on Mars: http://www.esa.int/ESA_Multimedia/Images/2018/04/Dust_devil_on_Mars http://www.esa.int/ESA_Multimedia/Images/2018/04/Dust_devil_....
    - jessriedel 6y ago
      You just linked to the ESA version of my NASA link :)
      - DiogenesKynikos 6y ago
        I think I meant to reply to the person above you.
  - robotresearcher 6y ago
    In the images of the post, you can see these effects of wind-driven sand and dust, such as rippled dunes.
- mig39 6y ago
  Isn't there wind on Mars?
mcast 6y ago
Would be great to add a quality binaural microphone and listen to the sound of Mars. Apparently the Mars 2020 Rover (https://mars.nasa.gov/mars2020/spacecraft/rover/microphones https://mars.nasa.gov/mars2020/spacecraft/rover/microphones) will have that capacity when it lands in February 2021 but the microphones may break after landing: "Engineers are optimizing this microphone for space from easily available, store-bought hardware. It is unlikely it will work beyond landing. If it does survive, we may be able to hear the sounds of the Martian winds and sounds of the working rover, such as the wheels turning, or the motors that turn its head, and the heat pumps that keep it warm."
nabla9 6y ago
Very little shifting sands. Winds in Mars have almost no strength. Air pressure in the Mars surface is very low, something like 1% of Earths. Dust devils and storms are made of extremely fine powder.
- astroflask 6y ago
  The movement shown in this video[0] happened over the span of a martian day. Do not dismiss the winds of Mars, as they have also killed[1] a couple of rovers already. [0] https://youtu.be/k7pfdFMVj-o https://youtu.be/k7pfdFMVj-o [1] They have also breathed new life on one of those (before killing it, yes) by cleaning the solar panels. I'm referring to the MER Rovers Spirit & Opportunity.
  - nabla9 6y ago
    As you said, that movement of was over a day and the camera was pointing downwards towards very tiny details of fine grained powder next to a wheel. You wouldn't notice anything in real time video. The problem with Mars dust is that it's electrostatic and sticks to surfaces like solar panels. https://www.nasa.gov/feature/goddard/the-fact-and-fiction-of-martian-dust-storms https://www.nasa.gov/feature/goddard/the-fact-and-fiction-of... >It is unlikely that even these dust storms could strand an astronaut on Mars, however. Even the wind in the largest dust storms likely could not tip or rip apart major mechanical equipment. The winds in the strongest Martian storms top out at about 60 miles per hour, less than half the speed of some hurricane-force winds on Earth. >Focusing on wind speed may be a little misleading, as well. The atmosphere on Mars is about 1 percent as dense as Earth’s atmosphere. That means to fly a kite on Mars, the wind would need to blow much faster than on Earth to get the kite in the air.
    - astroflask 6y ago
      Totally agree that "The Martian" would never happen in real life. Still, as other have pointed out, there are dust devils and "strong" winds.
      - 6y ago
aeyes 6y ago
> The narrator It's a machine.

by hijp 6y ago

cpayne624 6y ago

Parallax, maybe, but no wind = no swirling dust or shifting sands, no?

pier25 6y ago
But there is wind, and storms.
jessriedel 6y ago
There is in fact wind. Only ~1% as much air as Earth, but it's sufficient to support phenomena like dust devils. https://science.nasa.gov/science-news/science-at-nasa/2005/14jul_dustdevils https://science.nasa.gov/science-news/science-at-nasa/2005/1... Of course, it's very weak, so it couldn't push over a spacecraft or building like in "The Martian", but I suspect sands shifts on a very slow timescale. I'm not sure.
- DiogenesKynikos 6y ago
  There are "dust devils" on Mars: http://www.esa.int/ESA_Multimedia/Images/2018/04/Dust_devil_on_Mars http://www.esa.int/ESA_Multimedia/Images/2018/04/Dust_devil_....
  - jessriedel 6y ago
    You just linked to the ESA version of my NASA link :)
    - DiogenesKynikos 6y ago
      I think I meant to reply to the person above you.
- robotresearcher 6y ago
  In the images of the post, you can see these effects of wind-driven sand and dust, such as rippled dunes.
mig39 6y ago
Isn't there wind on Mars?

mcast 6y ago

Would be great to add a quality binaural microphone and listen to the sound of Mars. Apparently the Mars 2020 Rover (https://mars.nasa.gov/mars2020/spacecraft/rover/microphones https://mars.nasa.gov/mars2020/spacecraft/rover/microphones) will have that capacity when it lands in February 2021 but the microphones may break after landing: "Engineers are optimizing this microphone for space from easily available, store-bought hardware. It is unlikely it will work beyond landing. If it does survive, we may be able to hear the sounds of the Martian winds and sounds of the working rover, such as the wheels turning, or the motors that turn its head, and the heat pumps that keep it warm."

nabla9 6y ago

Very little shifting sands. Winds in Mars have almost no strength. Air pressure in the Mars surface is very low, something like 1% of Earths. Dust devils and storms are made of extremely fine powder.

astroflask 6y ago
The movement shown in this video[0] happened over the span of a martian day. Do not dismiss the winds of Mars, as they have also killed[1] a couple of rovers already. [0] https://youtu.be/k7pfdFMVj-o https://youtu.be/k7pfdFMVj-o [1] They have also breathed new life on one of those (before killing it, yes) by cleaning the solar panels. I'm referring to the MER Rovers Spirit & Opportunity.
- nabla9 6y ago
  As you said, that movement of was over a day and the camera was pointing downwards towards very tiny details of fine grained powder next to a wheel. You wouldn't notice anything in real time video. The problem with Mars dust is that it's electrostatic and sticks to surfaces like solar panels. https://www.nasa.gov/feature/goddard/the-fact-and-fiction-of-martian-dust-storms https://www.nasa.gov/feature/goddard/the-fact-and-fiction-of... >It is unlikely that even these dust storms could strand an astronaut on Mars, however. Even the wind in the largest dust storms likely could not tip or rip apart major mechanical equipment. The winds in the strongest Martian storms top out at about 60 miles per hour, less than half the speed of some hurricane-force winds on Earth. >Focusing on wind speed may be a little misleading, as well. The atmosphere on Mars is about 1 percent as dense as Earth’s atmosphere. That means to fly a kite on Mars, the wind would need to blow much faster than on Earth to get the kite in the air.
  - astroflask 6y ago
    Totally agree that "The Martian" would never happen in real life. Still, as other have pointed out, there are dust devils and "strong" winds.
    - 6y ago

aeyes 6y ago

> The narrator It's a machine.