124
this post was submitted on 13 Nov 2023
124 points (98.4% liked)
Space
8723 readers
3 users here now
Share & discuss informative content on: Astrophysics, Cosmology, Space Exploration, Planetary Science and Astrobiology.
Rules
- Be respectful and inclusive.
- No harassment, hate speech, or trolling.
- Engage in constructive discussions.
- Share relevant content.
- Follow guidelines and moderators' instructions.
- Use appropriate language and tone.
- Report violations.
- Foster a continuous learning environment.
Picture of the Day
The Busy Center of the Lagoon Nebula
Related Communities
π Science
- !astronomy@mander.xyz
- !curiosityrover@lemmy.world
- !earthscience@mander.xyz
- !esa@feddit.nl
- !nasa@lemmy.world
- !perseverancerover@lemmy.world
- !physics@mander.xyz
- !space@beehaw.org
- !space@lemmy.world
π Engineering
π Art and Photography
Other Cool Links
founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
We use very large radio dishes to communicate with craft at Mars, so that the spacecraft can use smaller dishes and less power. In order to add a relay at L4/L5, that relay would also need very large dishes and high power usage to reach the craft at Mars. Probably larger than anything we have in earth orbit today.
Could we use lasers instead of radio, like the Starlink laser inter-links or the NASA ILLUMA-T/LCRD demonstration?
Maybe in the future, but the existing Mars orbiters need to hear a strong radio signal. And laser communication has not yet been tested outside of Earth orbit. It will need to be significantly scaled up to handle the 2-3AU distance.