b3ta.com links
You are not logged in. Login or Signup
Home » links » Link 1545232 | Random

This is a normal post
Isn't this just pan and scan across still mosaic images?
(, Tue 21 Jul 2020, 10:08, Reply)
This is a normal post logically there will come a point where humans landing on Mars is so commonplace that there will be 'fashion' instagram posts from Mars
so maybe we should just not bother going
(, Tue 21 Jul 2020, 11:10, Reply)
This is a normal post
I'd happily support sending all the Instagrammers there and only on arrival telling them that there's no internet.
(, Tue 21 Jul 2020, 12:50, Reply)
This is a normal post or oxygen

(, Tue 21 Jul 2020, 13:00, Reply)
This is a normal post
I consider that a fringe benefit.
(, Tue 21 Jul 2020, 13:03, Reply)
This is a normal post I think it was Larry Niven who wrote about Mars:
The atmosphere would be deathly toxic... if it weren’t too thin to matter.
(, Tue 21 Jul 2020, 13:07, Reply)
This is a normal post Indeed.
Toxicity might be around third or fourth on the list of potentially fatal issues. Some way below temperature and pressure.
(, Tue 21 Jul 2020, 13:44, Reply)
This is a normal post

(, Tue 21 Jul 2020, 13:53, Reply)
This is a normal post Less Covid though

(, Tue 21 Jul 2020, 14:33, Reply)
This is a normal post Yes. With a sleepy charmless patronising voice over telling you so.
But it still is what it claims to be.

We need a decent sized comms relay network around Mars before it's feasible to stream video back (and forth), which should hopefully be one of the first things a Starship does when it arrives there... You could fit a shitload of fairly large satellites into a Starship.
(, Tue 21 Jul 2020, 17:48, Reply)
This is a normal post or one satellite with a very big antenna
best one out there at the moment is on MRO - clicky
(, Tue 21 Jul 2020, 18:06, Reply)
This is a normal post fake link!
Or linky no worky.

You could have fucking huge lightweight expanding dish antennas on fairly small satellites, power generation and battery storage would be the limiting factors, I think. Like, if your dish obscures your solar panels, you're not going to be able to transmit for very long.

Oh and just one big dish sat wouldn't cut it, you'd want a network dense enough to maintain constant line of sight with Earth's comms network.
(, Tue 21 Jul 2020, 19:10, Reply)
This is a normal post link fixed
it was to the comms system on the Mars Reconnaisance Orbiter, 3 metre antenna, 6 Mbit/s, but now only 2 iirc
(, Tue 21 Jul 2020, 22:18, Reply)
This is a normal post Aha
Yeah that's what I'd call a fairly large satellite. 1-2t. Pack a dozen or so of them in a Starship and Bob Kerman's your uncle.
(, Tue 21 Jul 2020, 23:14, Reply)
This is a normal post
Starlink makes sense where you've got people distributed all over the surface who need to talk to each other. Any initial Mars settlement is going to be concentrated in one place and the only distant thing they'll need to communicate with is Earth. You could just as easily do that with one or two large comms sats instead of 25,000 small ones.
(, Tue 21 Jul 2020, 19:37, Reply)
This is a normal post I'm not saying we'd need anything like Starlink (they wouldn't have the power anyway)
but a good dozen or so decent sized (around 1t or so) comms satellites would do.

You could probably get away with three giant ones if they are all high enough up. Just having one in geostationary orbit (areo­synchronous if you're a pedant) would mean being cut off from Earth whenever your side of Mars was facing away from Earth. A small network of big satellites in geo would make constant communication possible.
(, Tue 21 Jul 2020, 19:53, Reply)
This is a normal post
Three big ones is probably the way to go to get the bandwidth back to earth. They wouldn't need to be stationary either as long as they were 120 degrees apart in the same orbit, that orbit could be anything you choose. Tracking satellites is a solved problem.

If you could live with short breaks, you could probably stick two in a really high orbit at 180 degree separation. You've got the communication delay to factor in anyway, so you could probably live with that.
(, Tue 21 Jul 2020, 20:31, Reply)
This is a normal post If we're only going with 3 I'd want them at high altitude with a low inclination for maximum coverage but I take your point.
And I'd want a further 9 for redundancy. :D
(, Tue 21 Jul 2020, 21:11, Reply)
This is a normal post It's never a good idea to look at extreme close-ups of your food.

(, Tue 21 Jul 2020, 10:42, Reply)
This is a normal post never sure what we're supposed to be looking at in these things

(, Tue 21 Jul 2020, 11:11, Reply)
This is a normal post Mars in 4k

(, Tue 21 Jul 2020, 11:46, Reply)
This is a normal post "This is the first time Martian footage has been rendered in stunning 4K"
Really? Are you sure?
(, Tue 21 Jul 2020, 14:18, Reply)
This is a normal post looks like a shithole. when do we start terraforming it?

(, Wed 22 Jul 2020, 1:10, Reply)