User Hobbes

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What happens to the Falcon 9 second stage after payload separation?

Aug 23 at 15:57 PearsonArtPhoto♦ 109k

3

36

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6

answers

7k

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Why did it take so long for methane to be used as a rocket propellant?

rockets spacex engine-design fuel raptor

Jan 14 '18 at 1:50 Baz 1

7

36

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2

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7k

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What would it feel like to be in a Martian dust storm?

mars colonization environment dust weather

Dec 2 '13 at 20:58 Community♦ 1

6

29

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3

answers

7k

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Starting a liquid fuel engine in zero gravity

propulsion orbit

Nov 7 '14 at 3:26 Community♦ 1

3

21

votes

1

answer

11k

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Voyager 3: what would have been its mission, and why was it canceled?

nasa probe voyager canceled-project

Aug 24 '18 at 15:37 Oliver 1

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575

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Does the proximity of engines in engine clusters cause interference?

launch falcon-9 engines

Jul 9 '15 at 21:08 Community♦ 1

1

20

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1

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1k

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Ariane 4: shroud around stage?

launch ariane

Nov 8 '13 at 17:02 Undo 17.3k

2

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2

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2k

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NASA Launch Control: was all of its capacity ever used?

nasa apollo-program launch-site multi-launch

Sep 17 '15 at 12:37 Community♦ 1

2

15

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4

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8k

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Was Hubble really related to spy satellites?

artificial-satellite telescope optical hubble military

Dec 16 '18 at 5:17 Community♦ 1

1

15

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4

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3k

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What makes a payload fairing so expensive?

manufacturing fairings

Jun 17 '18 at 22:19 Mark G 9

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answer

1k

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Where is Giotto now?

probe comet esa giotto

Nov 14 '19 at 22:54 PearsonArtPhoto♦ 109k

2

14

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7

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Orbital mechanics: trying to understand counterintuitive behavior (braking to overtake)

orbital-mechanics

Feb 20 '19 at 0:07 Glorfindel 566

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1k

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Why did NASA discontinue use of the MMU?

astronauts space-shuttle eva

Mar 23 '14 at 15:30 Community♦ 1

3

13

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4

answers

7k

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How big would a manned ascent stage for Mars need to be?

mars rockets propulsion engineering stages

Oct 26 '15 at 16:08 Organic Marble 130k

4

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3

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1k

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How is the software for scientific space missions developed?

artificial-satellite probe software

Aug 19 at 13:19 jeancallisti 211

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How was the airlock installed on the Space Shuttle mid deck?

space-shuttle

Jun 10 '19 at 0:49 Organic Marble 130k

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11

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617

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What were the differences between the LLRV and LLTV?

crewed-spaceflight apollo-program nasa training lltv

Jan 8 '14 at 17:46 oefe 2,091

10

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answer

5k

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Why does the ISS not use the most efficient solar panels available?

iss solar-power

Oct 28 '19 at 7:58 Ian Jackson 1

1

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4

answers

4k

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Where can I find data for Atmospheric density vs. altitude?

atmosphere atmospheric-drag

Aug 15 '19 at 7:46 Hobbes 117k

1

10

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584

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How does the Falcon 9 first stage land on the moving surface of the barge?

spacex falcon-9 landing first-stage

Jun 3 '16 at 19:17 Community♦ 1

3

9

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2

answers

2k

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Why can't New Horizons send data and do observations at the same time?

voyager new-horizons

Jul 20 '15 at 18:06 Hobbes 117k

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931

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Why do we differentiate between astronauts and cosmonauts?

terminology astronauts

Apr 14 '14 at 12:26 TildalWave 72.6k

8

votes

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answer

105

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ESA's contribution to ISS: what has succeeded the ATV?

iss esa

Jul 28 '19 at 15:27 Hobbes 117k

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520

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What does the ISS Mission control center do?

iss communication mission-control

Nov 21 '18 at 4:44 DrSheldon 36.3k

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1k

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How does the Rocket Equation work when you use boosters?

rocket-equation

Oct 21 '18 at 5:30 uhoh 116k

7

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2

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1k

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What is the rationale behind the manned versions of SLS?

launch rockets nasa orion-spacecraft

Feb 12 '14 at 15:26 Community♦ 1

2

6

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2

answers

599

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How much of the sky can the JWST see?

james-webb-telescope

Aug 27 '19 at 2:23 Community♦ 1

1

6

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2

answers

4k

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Does the second stage of the Falcon 9 have RCS thrusters?

spacex falcon-9 attitude design engines

Aug 15 '16 at 7:25 Hobbes 117k

5

votes

1

answer

391

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Benefits of air-launching a rocket

air-launch

Apr 22 '19 at 13:26 Hobbes 117k

5

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3

answers

520

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What is the correlation between the cost of a satellite and its lifetime?

artificial-satellite economics orbital-lifetime

Apr 25 '18 at 11:17 Georgie 84

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34 Questions

What happens to the Falcon 9 second stage after payload separation?

Why did it take so long for methane to be used as a rocket propellant?

What would it feel like to be in a Martian dust storm?

Starting a liquid fuel engine in zero gravity

Voyager 3: what would have been its mission, and why was it canceled?

Does the proximity of engines in engine clusters cause interference?

Ariane 4: shroud around stage?

NASA Launch Control: was all of its capacity ever used?

Was Hubble really related to spy satellites?

What makes a payload fairing so expensive?

Where is Giotto now?

Orbital mechanics: trying to understand counterintuitive behavior (braking to overtake)

Why did NASA discontinue use of the MMU?

How big would a manned ascent stage for Mars need to be?

How is the software for scientific space missions developed?

How was the airlock installed on the Space Shuttle mid deck?

What were the differences between the LLRV and LLTV?

Why does the ISS not use the most efficient solar panels available?

Where can I find data for Atmospheric density vs. altitude?

How does the Falcon 9 first stage land on the moving surface of the barge?

Why can't New Horizons send data and do observations at the same time?

Why do we differentiate between astronauts and cosmonauts?

ESA's contribution to ISS: what has succeeded the ATV?

What does the ISS Mission control center do?

How does the Rocket Equation work when you use boosters?

What is the rationale behind the manned versions of SLS?

How much of the sky can the JWST see?

Does the second stage of the Falcon 9 have RCS thrusters?

Benefits of air-launching a rocket

What is the correlation between the cost of a satellite and its lifetime?