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After some reading (including a trip down my memory lane of a Grade 7 me reading Spirit/Opportunity mission updates, which kick-started me in following real-time news of space missions) - this is indeed a much longer silence than we usually see.https://twitter.com/cosmos4u/status/1393905009658671104 …
For S/C that did operate on Mars surface, 1st imagery was released:
@MarsCuriosity/@NASAPersevere/@NASAInSight - ~real time
@MarsPhoenix - ~2 hours
Spirit/Opportunity - ~3-4 hours
Mars Pathfinder - ~8 hours (partly due to landing at night)
Vikings - within several hours
Another good comparison is Huygens on Titan w/ its 1st photos (& whatever data it collected on the way down) acquired within a few hours. Lunar missions are not a good comparison as we have constant view of the site assuming global Earth ground station coverage.
What's going on? I'm afraid I'm as clueless as all of you, but my impression from following Chinese spaceflight's that "state media PAO on vacation" might be as plausible of a reason as "rover/lander problems" or "orbiter missed downlink; awaiting @esaoperations help". ¯\_(ツ)_/¯
I have just seen another theory, based on slides from an official presentation around 2 years ago, that UHF data linkage w/ the TW-1 orbiter isn't even planned until Sol 3. This probably will be after the orbiter lower its orbit in a few hours from now per earlier reports.
This seems strange to me since this would mean only direct-to-Earth X-band links are usable right now, not a situation that I would like to be immediately after landing. I'm not sure why didn't they try to get a thumbnail or two back to Earth first.
BTW it seems the only other orbiter able to help out w/ TW-1 is ESA's Mars Express, which per a rumor will perform the 1st comm session tomorrow.
@ESA_TGO is probably unusable due to its UHF package being NASA's ELECTRA (MEX's from in-house for Beagle 2)https://twitter.com/esaoperations/status/1286233914814672899?s=19 …
The U.S. has had FIVE rovers on Mars. Sojourner, Spirit, Opportunity, Curiosity, & Perseverance. You're right that they've only had 1 helicopter, Ingenuity.
Thanks! I was wondering exactly that--How this compared to the other landers? What about the other probes? Esp the early ones like the 2 Vikings & Pathfinder/Sojourner?
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