5 ms·
How much bandwidth are we talking about? 1 Mbps? 10 Mbps? I read most of the fact sheet but it doesn’t seem to provide an answer other than “10x state of the ar
by sholladay 3y ago
How much bandwidth are we talking about? 1 Mbps? 10 Mbps? I read most of the fact sheet but it doesn’t seem to provide an answer other than “10x state of the art radio”.
Anyway, this is very cool. And it’s an important change if we live in the dark forest solution of the Fermi paradox. :)
- pseudosavant 3y agoThe test they performed recently streamed ~265mbps from Psyche to Earth
- Arrath 3y agoLet me take a breath and not get salty about the internet service options available to my parents.
- mfwit 3y agoLooks like they hit 267Mbps at 19 million miles away on Dec 11th. https://www.jpl.nasa.gov/news/nasas-tech-demo-streams-first-video-from-deep-space-via-laser https://www.jpl.nasa.gov/news/nasas-tech-demo-streams-first-...
- p1mrx 3y agoI wonder what sort of rate they'll get at Mars distance (400 million km)? Psyche's orbit is beyond Mars, so we're likely to find out if the spacecraft stays operational.
- mfwit 3y agoThis pdf is like 10yrs old, but graph in the top right outlines the rate based on distance. https://www.lpi.usra.edu/opag/july2014/posters/9-DSOC_OPAG_Poster.pdf https://www.lpi.usra.edu/opag/july2014/posters/9-DSOC_OPAG_P...
- p1mrx 3y agohttps://i.imgur.com/O9P58EG.png https://i.imgur.com/O9P58EG.png The first line is around 267 Mbps, so it looks like they're expecting 10 Mbps at max distance to Mars.
- LoveMortuus 3y agoThat's still a really good speed, but I think the bigger question might be latency.
- itishappy 3y agoLatency would be determined almost completely by the speed of light itself. Earth to Mars ranges from 5.5*10^10 to 4.0*10^11 m, and light travels 3*10^8 m/s. Earth-Mars latency is therefore from 3 to 22 minutes one-way.