Linked Questions

3 votes
3 answers
401 views

Could the Lunar Lagrange Points work for space telescopes?

Every orbit in space has its pros and cons. Low Earth Orbit has accessibility but frequent eclipses whereas a Solar Lagrange Point is clear and stable but distant. In the case of the Lunar Lagrange ...
Redliox's user avatar
  • 141
6 votes
1 answer
574 views

What type of information can be gathered from a plot of brightness against wavelength?

While reading this paper about the possibilities JWST will provide to study Titan, I have come across a graph that plots brightness (not sure what units it is in) against wavelength in micron. Here it ...
Don_S's user avatar
  • 379
10 votes
1 answer
604 views

What exactly is the interaction that blocked Juno's data downlink near solar conjunction?

According to Space.com's article Juno Phones Home: Jupiter Probe Reconnects with Earth After 8th Flyby, Juno's recent close flyby of Jupiter and data collection happened while Jupiter was too close to ...
uhoh's user avatar
  • 149k
4 votes
2 answers
466 views

Quantitatively, why will optical communication be better than X-band for deep-space communications?

In a question about communicating with Voyager, an answer asserts: [70 meter dish antennas deployed in space] just isn't done, and it probably won't be, since optical communication is definitely ...
Phil Frost's user avatar
  • 1,033
2 votes
3 answers
494 views

Did New Horizons use its smaller medium-gain antenna for most/all downlinking of Pluto and Arrokoth flyby data?

Brian May's New Horizons video (below) was released at about the same time that the New Horizons spacecraft passed 2014 MU69 Arrokoth and includes a lot of technically meaningful graphics. One item ...
uhoh's user avatar
  • 149k
9 votes
1 answer
458 views

Tradeoffs between using two 34 m and one 70 m Deep Space Network dish?

Discussion at this answer to Why does DSN sometimes uses two dishes at the same time to receive Voyager-1? include the possibility that in some cases it would be preferable to use two 34 meter DSN ...
uhoh's user avatar
  • 149k
1 vote
1 answer
620 views

Juno RF power output

What is the RF Power Output from Juno into its Parabolic dish, and the RF radiated out from the dish and the eventual power received say at the dish in Canberra which obviously then would need to be ...
Brian's user avatar
  • 11
4 votes
1 answer
219 views

What's the status and timeline for Millimetron? (Russia's 10m Deployable Antenna cooled to 6 K Earth-Space VLBI)

Comments below an answer to How does NASA's ASTHROS stratospheric telescope compare to its James Webb space telescope? link to JPL's Paul F. Goldsmith's The Renaissance of High Resolution ...
uhoh's user avatar
  • 149k
0 votes
1 answer
211 views

How can the data rate be increased in noisy outer space?

What can we do to improve the data rate in outer space? I see that there are some noise sources that affect the signal quality between ground stations & deep space. As I've read so far in various ...
Pras4's user avatar
  • 335
5 votes
2 answers
196 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 ...
SF.'s user avatar
  • 55k
5 votes
0 answers
464 views

Did any of Voyagers' receivers' front ends take advantage of the "cold of space" to lower noise? (communications or radio/plasma science receivers)

Most of the Voyagers' electronics are kept warm by electrical heaters powered by their RTG's, and presumably protected by some amount of insulation from the "cold of space" which means loss ...
uhoh's user avatar
  • 149k
2 votes
1 answer
297 views

Will future deep space optical communications "ground stations" actually be in space, or on the ground?

Deep space communications ground stations are on the ground because their transmit and receive electronics alone is bulky and heavy, not to mention their 34 and 70 meter dish antennas! But those ...
uhoh's user avatar
  • 149k
0 votes
1 answer
160 views

Intercommmunication between crewed space missions in all planets of solar system [closed]

As we know Human Communication taking place between Man in space, Man on Moon, Man on Mars (Future exploration) with Human beings on Earth planet where we are living with the help of control stations ...
Prashant Akerkar's user avatar
1 vote
1 answer
157 views

Which is stronger per Hz, radio signals from a Mars spacecraft, or Mars' blackbody radiation?

It just occurred to me that while Mars is cold from a human's perspective, from a radio engineer's perspective it's still kind-of hot. When even the largest DSN antennas are pointed at Mars to ...
uhoh's user avatar
  • 149k
3 votes
1 answer
121 views

Radio antenna used to communicate with the Telstar 1 satellite in 1962

Related to Why was Telstar 1 put in a 952 x 5933, 2.6 hour 44.8° MEO orbit?. The satellite ground station at Andover, Maine, that was used to communicate with the Telstar 1 satellite was a horn ...
Fred's user avatar
  • 13.1k