Linked Questions

25 votes
4 answers
12k views

Does the International Space Station get TV?

For obvious reasons the ISS cannot get cable TV. Can the ISS get the new digital air TV or satellite TV using an issued dish and receiver like a house? How would that be done compared to how it is ...
Muze's user avatar
  • 1
26 votes
3 answers
8k views

What is the purpose of the rotating dish antenna on the ISS

I just saw some footage of the ISS in which a dish antenna could be seen, constantly rotating. The dish looked more-or-less parabolic, meaning that it is presumably sending/receiving along a fairly ...
Anthony X's user avatar
  • 17.6k
25 votes
2 answers
3k views

What is the function of this (apparently) fixed dish on the ISS?

I saw this image in Popular Science, one of the example photos from the book by astronaut/photographer/astrophotographer(?) Donald Pettit. It's beautiful and impressive not only from a color/...
uhoh's user avatar
  • 149k
51 votes
1 answer
3k views

How long is the ISS out of reach of all ground stations?

This is a followup to a recent question and answer discussing ground-based monitoring of the International Space Station, specifically in the context of an astronaut crew that is all asleep. How ...
A. Rex's user avatar
  • 588
12 votes
1 answer
5k views

When does the ISS have a loss-of-signal?

The ISS has a camera mounted streaming live video from space (HDEV). From time to time, there is a blue screen visible, which is noted to be during times of "loss of signal". What exactly defines a "...
Alex's user avatar
  • 663
7 votes
3 answers
1k views

SAR image processing

Is it possible for conventional x86 based processor/High precision GPU to be used for image processing for space borne Synthetic Aperture Radar (SAR) system? If not, are there alternatives using ...
Ken Adams's user avatar
9 votes
1 answer
2k views

What makes an antenna "high gain", and high gain as opposed to what alternative(s)?

Whenever communications to/from a space vehicle are described or discussed, there is inevitably a reference to the vehicle's "high gain" antenna. What is it about such an antenna (specific technical ...
Anthony X's user avatar
  • 17.6k
6 votes
2 answers
1k views

What is this spinning object seen on a spacecraft above the ISS?

In the YouTube Trailer for the PBS program A Year in Space at 00:56 a small spinning object can be seen, attached to a spacecraft well above the ISS. I think the ...
uhoh's user avatar
  • 149k
8 votes
1 answer
568 views

Why are there times when the ISS can transmit audio, but not video?

I am watching the live stream of today(9/1/16)'s spacewalk. The ISS entered a position in space where the video feed was lost, but they are still able to broadcast the audio conversations between the ...
AaronJPung's user avatar
3 votes
2 answers
385 views

How exactly were the signals from quad dishes of Apollo Deep Space High-Gain Antenna or Russian B-529 processed for local control of tracking?

The images below (and their sources) show the quad dishes of the Apollo Deep Space High-Gain Antenna and the Russian B529 ground station tracking antenna. From NASA Technical Note TN D-6723 Apollo ...
uhoh's user avatar
  • 149k
3 votes
1 answer
924 views

What are the sounds in this GoPro-in-orbit ISS video?

The video description says: Published on Apr 15, 2015 This footage was taken by U.S. astronaut Terry Virts during a spacewalk on the International Space Station on February 25, 2015. Virts and ...
uhoh's user avatar
  • 149k
13 votes
1 answer
690 views

How much does the ISS "banana" or flex under the constantly changing conditions of solar heating?

This answer to Do antennae on the ISS have to constantly move to maintain data links? discusses some of the challenges precisely pointing an antenna mounted to the ISS exterior. While the ISSs orbit ...
uhoh's user avatar
  • 149k
3 votes
1 answer
398 views

Which S-Band ISS antenna stopped transmitting to TDRS and was replaced during the recent 2021-12-02 EVA?

CNN's says: Marshburn and Barron began their spacewalk at 6:15 a.m. ET, and it's expected to last for about six and a half hours. The team will replace a malfunctioning communications antenna. Live ...
uhoh's user avatar
  • 149k
5 votes
1 answer
180 views

Bishop airlock: explanation of the name?

Nanoracks' new Bishop Airlock will soon be installed on Node 3 and will provide some cool operational capabilities. But, I don't get the name. This Verge article says ...
Organic Marble's user avatar
2 votes
0 answers
439 views

How exactly does the live feed from ISS work?

Using my cell phone in a city to download lots of data very fast is common, thanks due to the dense net of base stations close to me (~1 km). But with the space station about 400 km above ground and ...
Alex's user avatar
  • 663

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