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Summary Answers Questions Tags Badges Favorites 1 Bounties Reputation All actions

1,690 Questions

Views Newest Activity Votes
35
134
votes
2
answers
19k
views

How did the Apollo computers evaluate transcendental functions like sine, arctangent, log?

apollo-program history mathematics flight-computer
Mar 18 at 7:01 Nathan Tuggy 4,286
15
101
votes
6
answers
21k
views

What makes Ada the language of choice for the ISS's safety-critical systems?

iss safety software flight-computer computing
Jun 9 at 1:27 Trunk 151
12
76
votes
5
answers
11k
views

Could “peak Apollo levels” of support have gotten NASA astronauts to Mars in the 1980's?

mars crewed-spaceflight apollo-program
Jun 21 '18 at 14:43 M.A. Golding 31
22
76
votes
7
answers
17k
views

What can the KSP game actually teach about spaceflight and orbital mechanics, and what are its limitations?

orbital-mechanics crewed-spaceflight uncrewed-spaceflight kerbal-space-program education
Dec 31 '17 at 17:51 Aurora0001 105
15
59
votes
5
answers
8k
views

How much bigger could Earth be, before rockets would't work?

launch rockets payload escape-velocity performance
Feb 22 at 11:07 uhoh 91.9k
12
59
votes
1
answer
11k
views

Which Apollo “mystery” was said to be finally solved by a better rendering engine?

the-moon apollo-program imaging photography
Feb 15 '17 at 12:51 Federico 940
8
55
votes
3
answers
20k
views

This image of the Space Shuttle is truly beautiful, but is it real?

iss nasa space-shuttle imaging space-art
Sep 21 '18 at 14:39 jcaron 703
6
54
votes
3
answers
10k
views

Is 75 meters an exceptionally close distance for two satellites to pass at >6,000 m/s?

collision-avoidance skyfield satellite-constellation
Dec 14 '16 at 17:24 Community♦ 1
5
53
votes
4
answers
12k
views

“Pillars of Baikonur” What is the purpose of the hundreds of short, white posts near the Baikonur Cosmodrome launch pad?

launch-site russia identify-this-object baikonur-cosmodrome
Jun 26 '18 at 12:23 Floern 1,224
11
46
votes
8
answers
12k
views

What would be the (most difficult) challenge to make a “10,000 year satellite”?

artificial-satellite engineering orbital-lifetime space-art
Jan 16 at 1:31 Muze the good Troll. 1
5
46
votes
2
answers
9k
views

What caused this bright light from the ground at night seen from the ISS?

iss low-earth-orbit identify-this-object earth-observation space-art
Nov 24 '18 at 7:20 uhoh 91.9k
7
43
votes
2
answers
4k
views

What's the baseball bat for? (seen in CRS-8 berthing NASA TV broadcast)

iss nasa berthing
Apr 8 at 11:49 fonsi 109
5
42
votes
3
answers
9k
views

What is GPS' 19 year rollover and does it present a cybersecurity issue?

gps gnss
Apr 9 at 16:32 called2voyage♦ 22.1k
2
41
votes
3
answers
9k
views

How often is duct tape used during crewed space missions?

apollo-program in-space-repairs
Sep 17 at 18:40 Adam 391
1
40
votes
1
answer
8k
views

What was NASA's “Hack” to improve Opportunity's memory in 2015? Did it help?

mars rovers opportunity
Jun 14 '18 at 8:44 SF. 43.4k
3
39
votes
1
answer
10k
views

Why does this researcher have a “clear plastic bag” over their head?

emergency
Aug 8 '18 at 17:38 asdfex 7,103
 
36
votes
1
answer
3k
views

What kind of orbit makes this wave shaped ground track?

isro ground-track
May 13 '18 at 9:13 Steve Linton 13.4k
2
35
votes
1
answer
5k
views

Why does this rocket have a nose cone “cozy”?

rockets apollo-program space-art
Apr 30 at 16:54 David Shomper 1
3
34
votes
5
answers
8k
views

India just shot down a satellite from the ground. At what altitude range is the resulting debris field?

debris military weapon india
Apr 7 at 11:03 PearsonArtPhoto♦ 94.8k
2
34
votes
2
answers
5k
views

SpaceX and propulsive landing on Mars — what just happened? (and why?)

spacex red-dragon propulsive-deceleration
Jul 28 '17 at 20:09 Joshua Oguma 1
3
33
votes
1
answer
3k
views

Why does this image of Jupiter look so strange?

jupiter juno
Sep 21 at 8:39 uhoh 91.9k
1
33
votes
2
answers
7k
views

How do ISS astronauts “get their stripes”?

iss spacesuits
Mar 19 at 17:24 uhoh 91.9k
5
32
votes
2
answers
8k
views

Has anyone in space seen or photographed a simple laser pointer from Earth?

photography earth-observation
Jul 10 at 22:22 Magic Octopus Urn 8,228
1
32
votes
8
answers
5k
views

How would a mousetrap for use in space work?

iss animals emergency
Apr 19 at 13:54 LocalFluff 23.7k
3
32
votes
2
answers
6k
views

How did the X-15 control attitude above the Kármán line?

adcs spaceplane x-15 karman-line
Oct 17 '18 at 15:12 Uwe 20.3k
3
31
votes
5
answers
6k
views

Why were contact sensors put on three of the Lunar Module's four legs? Did they ever bend and stick out sideways?

apollo-program landing lunar-landing lunar-module sensors
Aug 3 at 12:18 stevek_mcc 161
2
31
votes
4
answers
4k
views

Why is there a large wooden ball on Mariner 3's magnetometer?

spacecraft testing mariner
Oct 28 '18 at 9:01 Uwe 20.3k
1
30
votes
1
answer
4k
views

Could a Falcon Heavy really put six GPS Block III satellites in orbit at the same time?

artificial-satellite falcon-heavy gps hllv
Nov 28 at 22:21 uhoh 91.9k
1
30
votes
2
answers
4k
views

Which LEO satellite lost over 30 km of altitude in the geomagnetic storm of 13-14 March 1989?

low-earth-orbit tracking space-weather
Apr 12 '18 at 1:16 Organic Marble 90k
2
28
votes
5
answers
14k
views

What does “double vacuum pressure” mean in space-suit testing?

spacesuits
Jun 15 at 12:40 Jocelyn Brisebois 1
1 2 3 4 5 … 57 next
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