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Ludo's user avatar
Ludo
  • Member for 6 years, 9 months
  • Last seen this week
35 votes
4 answers
7k views

How did the USSR track Gagarin's Vostok-1 orbital flight? Was tracking capability an issue in the choice of orbit?

34 votes
2 answers
9k views

What were the differences between the STS Orbiters?

29 votes
1 answer
2k views

How did they access the LM to mount the flag package while the Apollo stack was already on the launch pad?

27 votes
4 answers
8k views

Why is the Apollo LEM ladder so far from the ground?

23 votes
3 answers
4k views

What equipment was taken from Earth to the surface of the Moon and back?

21 votes
1 answer
5k views

Would the Space Shuttle have been able to carry the Hubble Space Telescope back to Earth had it been necessary?

18 votes
1 answer
2k views

What does the ATOLL programming language look like?

17 votes
2 answers
3k views

What is a "fee area" exactly and why is it named that way?

16 votes
3 answers
11k views

How can Artemis 1 take so much longer for Earth-Lunar transit than the Apollo missions did?

15 votes
1 answer
1k views

How were the pins for Saturn V controlled release tested?

14 votes
2 answers
2k views

Where did AS-206 go between 1967 and 1973?

13 votes
2 answers
452 views

Why did the Hubble telescope have to stay powered on while in storage?

12 votes
1 answer
343 views

What programs did David Scott add to the Apollo computer for Apollo 15?

12 votes
1 answer
359 views

What does it mean to tune the Saturn F-1 engine to a frequency, and how is the tuning done?

11 votes
1 answer
2k views

Does a photo with two Saturn V's on launch pad 39A and 39B exist?

11 votes
1 answer
915 views

Why did the Vertical/Vehicle Assembly Building have four doors?

9 votes
1 answer
1k views

How did the Corona (Key Hole) satellites film canisters deorbit?

9 votes
1 answer
385 views

How did the star tracker on the Corona (Key Hole) satellite work?

9 votes
1 answer
549 views

How close were Starlink-1095 and Starlink-2305 to the Tiangong Chinese Space Station?

8 votes
2 answers
422 views

How was AS-212 (Saturn 1B) supposed to carry both a CSM and LM?

8 votes
2 answers
596 views

What is a throat plug used for?

8 votes
1 answer
312 views

How was motion blur mitigated in the early Earth-observation satellites?

7 votes
1 answer
858 views

What is the blue/red flare at the Delta IV Heavy launchpad

7 votes
2 answers
665 views

Were all three Mobile Launch Platforms ever in use simultaneously?

7 votes
2 answers
1k views

How is the ambiguity in code phase resolved in GNSS code-based positioning?

7 votes
1 answer
589 views

Does the SLS mobile launch platform share any hardware with STS or even Saturn I/V MLP?

6 votes
2 answers
441 views

Is the acoustic horn at Stennis Space Center still there? Is it used?

6 votes
1 answer
2k views

What is known about the trajectory of J002E3 (Saturn V IV-B stage of Apollo 12)?

5 votes
1 answer
334 views

Are there any markings that uniquely identify each Saturn-Apollo combination?

5 votes
1 answer
152 views

What is the reason for the short-duration cutouts in the Artemis I launch window?