User Hobbes

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

Apr 20 '18 at 15:14 Clayborn Thomas 1

6

36

votes

2

answers

6k

views

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

2

32

votes

6

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6k

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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

5

29

votes

3

answers

6k

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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

9k

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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

20

votes

1

answer

537

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Does the proximity of engines in engine clusters cause interference?

launch falcon-9 engines

Jul 9 '15 at 21:08 geoffc 64.6k

1

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1

answer

1k

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Ariane 4: shroud around stage?

launch ariane

Nov 8 '13 at 17:02 Undo 16.3k

2

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2

answers

1k

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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 Hobbes 110k

2

14

votes

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1k

views

Where is Giotto now?

probe comet esa giotto

Nov 14 at 22:54 PearsonArtPhoto♦ 94.3k

2

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7

answers

3k

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

orbital-mechanics

Feb 20 at 0:07 Glorfindel 267

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votes

4

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6k

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Was Hubble really related to spy satellites?

artificial-satellite telescope optical hubble military

Dec 16 '18 at 5:17 uhoh 90.6k

1

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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

1

13

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4

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2k

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What makes a payload fairing so expensive?

manufacture fairings

Jun 17 '18 at 22:19 Mark G 9

3

13

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4

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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 87.8k

4

11

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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

Jun 5 '18 at 9:36 jeancallisti 81

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4k

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

iss solar-power

Oct 28 at 7:58 Ian Jackson 1

1

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1k

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

space-shuttle

Jun 10 at 0:49 Organic Marble 87.8k

10

votes

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521

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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

10

votes

1

answer

519

views

What were the differences between the LLRV and LLTV?

crewed-spaceflight apollo-program nasa training lltv

Jan 8 '14 at 17:46 oefe 2,011

1

8

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4

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3k

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

atmosphere atmospheric-drag

Aug 15 at 7:46 Hobbes 110k

8

votes

1

answer

96

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

iss esa

Jul 28 at 15:27 Hobbes 110k

3

8

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2

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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 110k

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827

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Why do we differentiate between astronauts and cosmonauts?

astronauts terminology cosmonaut

Apr 14 '14 at 12:26 TildalWave 69.5k

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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 90.6k

7

votes

2

answers

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

529

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How much of the sky can the JWST see?

james-webb-telescope

Aug 27 at 2:23 user32953 1

6

votes

1

answer

428

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What does the ISS Mission control center do?

iss communication mission-control

Nov 21 '18 at 4:44 DrSheldon 21.4k

1

6

votes

2

answers

3k

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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 110k

5

votes

1

answer

362

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Benefits of air-launching a rocket

air-launch

Apr 22 at 13:26 Hobbes 110k

5

votes

3

answers

493

views

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?

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

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

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?

Where is Giotto now?

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

Was Hubble really related to spy satellites?

Why did NASA discontinue use of the MMU?

What makes a payload fairing so expensive?

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

How is the software for scientific space missions developed?

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

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

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

What were the differences between the LLRV and LLTV?

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

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

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

Why do we differentiate between astronauts and cosmonauts?

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?

What does the ISS Mission control center do?

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?