Linked Questions

18
votes
3answers
1k views

Is there any money in space?

Currently everything used by astronauts in space gets there via a state/government sponsored lift. Astronauts can also bring a few personal supplies, but I imagine that most if not all financial ...
24
votes
1answer
3k views

SpaceX's 4,425 satellite constellation - what's the method to the madness?

The BBC article SpaceX aims to launch internet from space discusses the SpaceX proposal for a dense array of over 4,000 LEO satellites for global internet coverage, and links to SpaceX non-...
9
votes
2answers
531 views

Would astronauts on the ISS be affected by the radiation from a global nuclear war?

I was wondering what would happen to the ISS astronauts if some global disaster wiped out all ground support. This question tells us that a 2-person crew might survive up to a year on stockpiled food ...
-2
votes
2answers
2k views

What precisely is downrange distance - how is it defined mathematically?

Wikipedia: Downrange is the horizontal distance traveled by a spacecraft, or the spacecraft's horizontal distance from the launch site. Spacecraft don't travel horizontally. I don't even know how ...
2
votes
1answer
307 views

During final descent how will InSight know cardinal directions in order to land with proper orientation?

As explained in @karthikeyan's answer the InSight lander will rely upon its landing system to orient the lander properly, so that once on the ground instruments such as the RISE antennas will be ...
1
vote
1answer
282 views

What's up with the “Apollo” computer on the ISS? How is it being used?

There's a high performance computer on the ISS (HP "Apollo" HPC). How is it being used? Is it there just to check the hardware in the low/modest radiation environment of the variety found in LEO with ...
5
votes
2answers
152 views

Can a swarm of nano-probes act as a phased antenna of a greater power?

One problem with nano-satellites and generally any small spacecraft is that you can't fit a powerful power source and antenna - their usability outside vicinity of 'adult' satellites or Earth is thus ...
1
vote
1answer
79 views

How are airborne particulates monitored on the ISS? Are they distinguished at all by size and/or type?

The question What kinds of activities, experiment and, procedures done on the ISS must be done in chambers vented to space? links to and quotes from this answer to the 3D Printing SE question How is ...
7
votes
0answers
96 views

Interpolating precise ephemerides of GPS satellites

My objective is to obtain at least a sub-meter position accuracy by interpolation of the GPS ephemerides. There is conflicting research outside, where some authors state that a simple Lagrange or ...
2
votes
0answers
56 views

Why exactly did ESA provide a grant funding blockchain in space? Which program was used for the funding? What will this do?

Despite all of the negative authoritative answers to How would blockchain be integrated into spaceflight? Have any methods been proposed yet? stating that it wouldn't happen, Coin Telegraph's ...
1
vote
0answers
51 views

Distributed computational power-sharing and orbital supercomputer

I had an interesting conversation last night with a nanosatellite engineer about how much computational power is required in a nanosatellite constellation and if it's necessary. I had an idea or a ...