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-1 votes
0 answers
48 views

CO2 emissions for a satellite [closed]

How much CO2 emissions would producing an LEO satellite (e.g. Starlink satellite) release? I imagine there are various factors that go into this (aluminum body, electronics, battery, solar cells, etc.)...
Jonathan's user avatar
10 votes
1 answer
4k views

Does SpaceX expect 1 collision involving one of their Starlink satellites every 2 years?

I read on https://gizmodo.com/spacex-starlink-satellites-dodge-137-objects-daily-1850616506 by Passant Rabie: A new report revealed that Starlink satellites had to make 25,000 collision avoidance ...
Franck Dernoncourt's user avatar
3 votes
2 answers
733 views

What is the theoretical smallest size limit for a phased array antenna that can reach LEO?

Now that one provider is operating a phased array ground-to-satellite internet comm system, others will follow. A frequently asked question is "When can we use Starlink with a sat phone?". ...
SpaceInMyHead's user avatar
2 votes
1 answer
138 views

"...extending the Starlink network using longer-range laser comms and relay satellites to reach Mars and Starships in-transit" (Musk & Shotwell)

I have it on good authority that SpaceX's Elon Musk and Gwynne Shotwell: ...have talked about extending the Starlink network using longer-range laser comms and relay satellites to reach Mars and ...
uhoh's user avatar
  • 148k
3 votes
4 answers
2k views

Quantum technology for starship communications and landing on Mars

Based on practically proven Quantum-Entanglement principle, any entangled quantum switch in this universe can be flipped instantaneously from elsewhere. Can it be used to send information from far off ...
seccpur's user avatar
  • 1,175
4 votes
0 answers
143 views

How will Amazon's constellation differentiate itself from SpaceX's and OneWeb's?

The New York Times' Amazon Satellites Add to Astronomers’ Worries About the Night Sky says: Much of the attention on these strings of satellites has been placed on the prolific launches of SpaceX and ...
uhoh's user avatar
  • 148k
10 votes
1 answer
1k views

How much krypton is stored on a Starlink satellite?

How much krypton (fuel) is there for the krypton-powered ion thrusters on Starlink satellites and how long does it last?
Jacob's user avatar
  • 101
4 votes
1 answer
346 views

Has FCC jurisdiction for all the world for SpaceX's Starlink position?

These days, you can read in the news that SpaceX requested FCC for permission to change the orbit of the Starlink satellites already in orbit. Now... from my understanding, the Starlink satellites ...
danidemi's user avatar
  • 141
7 votes
1 answer
296 views

How has the brightness of SpaceX's Starlink constellation changed since May?

Shortly after the launch, before full orientation of the solar panels and raising of the orbits, the Starlink satellites were surprisingly bright and easily seen with the naked eye. Back then, I heard ...
SpaceBread's user avatar
4 votes
2 answers
764 views

What is meant by "a high-energy geostationary orbit"? (SpaceX Arabsat 6A)

The Teslarati article SpaceX’s April 7th Falcon Heavy launch a step toward new commercial markets says: While there is some inherent uncertainty surrounding the (once again) fairly new rocket, ...
uhoh's user avatar
  • 148k
4 votes
0 answers
299 views

Did the Starlink precursor Tintin satellites ever talk to each other? If so, how? Did they demonstrate an optical communications link?

Tintin A and B are the first two exploratory and testing spacecraft for SpaceX's Starlink program. It looks like they are in very similar orbits in both space and time, and are probably that way so ...
uhoh's user avatar
  • 148k
8 votes
1 answer
4k views

How low is VLEO? (FCC's newest approval for SpaceX)

Engaget's SpaceX gets FCC approval to deploy thousands more internet satellites says SpaceX's plan to build a global, high-speed wireless internet network using satellites has taken another step ...
uhoh's user avatar
  • 148k
3 votes
0 answers
1k views

What technology will SpaceX's StarLink satellites most likely use for sat-to-sat linking?

The question How does SpaceX plan to make money with StarLink Broadband? has got me thinking about how the satellites will link to each other. Wikipedia says it's something greater than 10,000 GHz and ...
uhoh's user avatar
  • 148k
4 votes
2 answers
825 views

How does SpaceX plan to make money with StarLink Broadband?

To me, it seems obvious that ground based optical fibres will be cheaper than a space based system by an order of magnitude. So unless say, everyone starts sea-steading and a space based broadband is ...
user2277550's user avatar
2 votes
0 answers
308 views

What kind of power is referred to in "the...most powerful all-electric propulsion communications satellite ever produced"

The Florida Today article On second flight, SpaceX Falcon 9 rocket to launch 'brute' of a satellite from Cape describes the upcoming SpaceX launch of SES-12. Next to this tiny image of (presumably) ...
uhoh's user avatar
  • 148k

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