[HN Gopher] Mars landing: Photo shows Perseverance rover during ...
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Mars landing: Photo shows Perseverance rover during landing
Author : jfk13
Score : 104 points
Date : 2021-02-19 18:34 UTC (4 hours ago)
(HTM) web link (www.bbc.co.uk)
(TXT) w3m dump (www.bbc.co.uk)
| underseacables wrote:
| If you have not watched the seven minutes of terror video
| produced by NASA, you absolutely must. It details exactly how
| they put these amazing machines on the surface of Mars.
|
| https://youtu.be/Ki_Af_o9Q9s
| eCa wrote:
| It's very interesting, but it suffers quite badly from the
| current trend of having too high volume on the background music
| while people are talking.
|
| Edit: Well, this video is from 2012, so that trend has been
| going for a while..
| java-man wrote:
| How come these images were made available to BBC, but not to the
| mission raw images web page [0]?
|
| [0] https://mars.nasa.gov/mars2020/multimedia/raw-images/
| teraflop wrote:
| The same images were posted to the official Twitter account:
| https://twitter.com/NASAPersevere
|
| It's pretty normal for NASA/JPL to release the coolest-looking
| pictures as quickly as possible for PR, and then follow up with
| the comprehensive releases of raw data later, especially in the
| early stages of a mission. I don't see anything to indicate
| that BBC was given any kind of special treatment.
| java-man wrote:
| I wish it were reverse: the raw images would appear first,
| followed by the processed media.
| giantrobot wrote:
| They used to do it that way and wouldn't get much uptake in
| the media. Newspapers/websites want big colorful high
| resolution photos to use as header images for articles. The
| tiny grayscale HazCam images are technically interesting
| and useful but are visually boring to non-technical
| viewers.
| interestica wrote:
| I was praising the big steps that NASA is making on this
| mission to really be publicly accessible... But they don't
| really have a unified communications plan. Images and
| information are spread out on various sites. The general public
| can't be expected to go searching. I was hoping the raw image
| site would be the primary location for all mission photos.
| rpiguyshy wrote:
| this also frustrates me
| mzs wrote:
| Because it's not a raw image instead is placed here:
| https://mars.nasa.gov/mars2020/multimedia/images/
| [deleted]
| wiz21c wrote:
| There are N cables from the "crane" to the rover. One less and
| you have a risk of not balancing the rover if one cable cuts too
| soon. One more and you have a risk of having one cable not
| cutting at all... I wonder how they fixed that N cables :-)
| ketzo wrote:
| And imagine the thousands (tens of thousands?) of similar,
| tiny, critical optimization problems that were required for the
| development of this rover.... whew.
| exporectomy wrote:
| They have minimum N for stability in normal operation (3). They
| probably put the reliability into the bridle cutters instead of
| redundant cables.
| ilyagr wrote:
| Mars Reconnaissance Orbiter captured both Curiosity and
| Perseverance under their parachutes.
|
| Aug 2012:
| https://en.wikipedia.org/wiki/File:MRO_sees_Curiosity_landin...
|
| Yesterday: https://mars.nasa.gov/resources/25610/hirise-captured-
| persev...
| natch wrote:
| The guy featured in the viral "7 minutes of Terror" video from
| Curiosity days, Adam Steltzner, gave a talk about those previous
| landings which is an absolute gem. Fantastic speaker. He goes
| through the technology in some detail at semi ELI5 level but
| enough to be good. Once he seems to be finished with the main
| topic, stick around for the personal and inspirational stories in
| the Q&A segment, well worth it.
|
| If you haven't seen 7 minutes of terror, it's a must watch (a
| little on the laughable drama side but hey it's deserved!), but
| no need to hunt it down because it's included near the beginning
| of his talk in the link below.
|
| https://longnow.org/seminars/02013/oct/15/beyond-mars-earth/
| soheil wrote:
| The link should probably be replaced with this
| https://www.nasa.gov/press-release/nasa-s-perseverance-rover...
| Kye wrote:
| I know the guidelines favor news writing about things instead of
| original sources, but I did submit the post from the rover's
| Twitter: https://news.ycombinator.com/item?id=26195979
|
| The tweet:
| https://twitter.com/NASAPersevere/status/1362825545227018240
|
| The image from Nasa's website (which I would have submitted but
| couldn't find initially):
| https://mars.nasa.gov/resources/25609/high-resolution-still-...
| poopsmithe wrote:
| Please please please tell me there was video captured from this
| angle!
| exporectomy wrote:
| Yes and it will keep getting better! They've recorded audio as
| well as video of the descent from multiple cameras on both the
| rover and descent stage looking up and down at each other, the
| ground, and the parachute.
| CrazyStat wrote:
| Nope. HiRISE is designed for very high resolution still images,
| not video.
| jfk13 wrote:
| This isn't about the HiRISE picture. It is indeed a still
| from a video (that was apparently still in the process of
| being downloaded at the time this was posted).
| coolspot wrote:
| Only one slow seeder for such a popular video. At least
| they have all the chunks.
| soheil wrote:
| If you read the Nasa press release where this image was taken
| from it does mention this is a frame from a video taken during
| descent.
| nerfhammer wrote:
| > This high-resolution still image is part of a video taken by
| several cameras as NASA's Perseverance rover touched down on
| Mars on Feb. 18, 2021.
|
| They're probably still processing the whole video
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(page generated 2021-02-19 23:00 UTC)