Space Exploration Stack Exchange is a question and answer site for spacecraft operators, scientists, engineers, and enthusiasts. It only takes a minute to sign up.

Sign up to join this community
Anybody can ask a question
Anybody can answer
The best answers are voted up and rise to the top

Explore our Questions

13 votes
1 answer
1k views

Does cosmic dust pose a problem for long-term satellites, telescopes and probes?

2 votes
1 answer
71 views

How does one calculate the look angle for non-geo satellites (i.e. LEO, HEO, etc.)

12 votes
2 answers
365 views

What ever happened to 6Q0B44E - potentially the "artificial satellite (with) the farthest orbit around the Earth"?

1 vote
0 answers
52 views

Is there a python library to determine the position of a satellite at a given time from TLE data excluding the Satellite catalog number?

7 votes
5 answers
3k views

What is the maximum distance between two satellites orbiting at 400 km that would still allow them to communicate with each other using radio waves?

2 votes
0 answers
67 views

How does one generate a formula(s) for an artificial satellite's location at time t given a set of known locations at discrete times?

2 votes
0 answers
38 views

What is the difference between SBAS and PPP used in GNSS accuracy corrections?

3 votes
0 answers
50 views

Where to find the network topology of Iridium-Next?

18 votes
3 answers
7k views

Are any geosynchronous satellites visible with the naked eye?

6 votes
1 answer
371 views

Satellites - predominant apparent motion?

1 vote
1 answer
114 views

Are the TLE of a satellite computed with the ECI or ECEF?

15 votes
6 answers
26k views

Can an artificial satellite stay in orbit forever?

6 votes
2 answers
3k views

Why do gps satellites rotate over the Earth

4 votes
3 answers
374 views

Satellite of a satellite of a satellite

Browse more Questions