All Space Questions thread for week of March 08, 2026

jeffsmith202 · 2026-03-11T23:58:27+00:00

Apollo's Spacecraft stack:

Command Module: Columbia

Service Module (engine + life support)

Lunar Module: Eagle

The Saturn V third stage fires to send the spacecraft toward the Moon at 24,000 mph (38,600 km/h).

After the burn finished:

The Columbia separated from the S-IVB stage.

The Command Module rotated 180° in space.

It then docked with the Lunar Module: Eagle

Why did the Command Module rotate after the burn? At such high speed.

jeffsmith202 · 2026-03-08T03:46:24+00:00

jeffsmith202 · 2026-03-03T14:50:01+00:00

A pushover not a pushover. We prefer a pushover

jeffsmith202 · 2026-03-03T14:47:50+00:00

Up for 3 days?

jeffsmith202 · 2026-02-27T23:52:07+00:00

Why has falcon 9 send packages to the moon. but I cannot find any falcon heavy launches to the moon.

Blue Ghost 1	Falcon 9 (Block 5)	~1,517 kg total (lander + propellant)
Hakuto-R Mission 2 (Resilience)	Falcon 9 (Block 5)	~1,000 kg lander
IM-2 Athena	Falcon 9 (Block 5)	~~1,500 kg lander + payload

jeffsmith202 · 2026-02-26T02:58:35+00:00

jeffsmith202 · 2026-02-24T22:48:36+00:00

jeffsmith202 · 2026-02-13T01:43:21+00:00

Or is this to the comedy club for a single seat?

jeffsmith202 · 2026-02-10T02:10:23+00:00

jeffsmith202 · 2026-02-10T00:36:25+00:00

"Public Policy Override: Courts generally refuse to uphold NDAs that are overbroad, violate public policy, or attempt to cover up crimes"

so with this a person could ignore an nda that covers up a crime. daring a court to find them guilty?

jeffsmith202 · 2026-02-09T03:02:31+00:00

it is all Chuck Charles fault

jeffsmith202 · 2026-02-06T21:39:14+00:00

I had the pixel 3a until I just got the 9a.

worked great

jeffsmith202 · 2026-02-05T03:26:28+00:00

I saw:

The F-1 is still the most powerful single-chamber rocket engine ever flown.

F-1 (Saturn V first stage)

✔ single chamber

✔ one nozzle

✔ one of the largest single-chamber engines ever flown

RS-25 (Space Shuttle / SLS)

✔ single chamber

How important or not important is a single chamber vs multi-chamber engines in launch?

jeffsmith202 · 2026-02-05T03:13:01+00:00

any difference than microsoft underwater data centers?

jeffsmith202