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It's also worth noting that this image was taken _yesterday_.
by thanatos519 5y ago
It's also worth noting that this image was taken _yesterday_.
- capableweb 5y agoI wonder what the data-rate is like (or rather, I'm too lazy to look it up myself). The image is 1010K which with a 14.4 Kbit/s connection would take ~10 minutes to download from Mars. 1 KBit/s would take ~2.5 hours.
- colechristensen 5y agoThe Mars Reconnaissance Orbiter gets 500 to 4000 kbps when the planet isn’t in the way. https://mars.nasa.gov/mro/mission/communications/ https://mars.nasa.gov/mro/mission/communications/
- giantrobot 5y agoNASA's Mars rovers use several orbital probes to relay communications back to Earth. They do have radios that can talk directly to Earth up to 32kbps but primarily use the relays. The UHF uplink to the Mars Recon Orbiter is up to 2Mbps and it's visible to the rover for about eight minutes a day. The orbiter's uplink to Earth is can hit up to 6Mbps. The Curiosity and Perseverance rovers have a fair amount of on-board storage (for an interplanetary probe). So they can spool a lot of data and then send a batch to the orbiters and then go about their next tasks. The orbiters also have a lot of storage (for interplanetary probes) and can themselves spool a lot of data until they're in a transmit window to Earth.
- withinboredom 5y agoWith only an eight minute window, wouldn’t that make the effective bandwidth be 10kbps?
- giantrobot 5y agoThe Mars rovers aren't doing OnlyFans livestreams. They've got science data to upload and can empty their spool in the time the orbiters are in range. They also have their direct uplinks to Earth at up to 32kbps for control and telemetry.
- withinboredom 5y agoMaybe they should.