Hobbes

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

launch spacex falcon-9 asked Jan 14, 2015 at 19:31

space.stackexchange.com

38 votes

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

rockets spacex engine-design fuel raptor asked Oct 1, 2015 at 11:59

space.stackexchange.com

35 votes

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

mars colonization environment dust weather asked Nov 1, 2013 at 7:54

space.stackexchange.com

29 votes

Starting a liquid fuel engine in zero gravity

propulsion orbit asked Oct 17, 2013 at 13:40

space.stackexchange.com

22 votes

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

nasa probe voyager canceled-mission asked Jul 20, 2015 at 17:45

space.stackexchange.com

21 votes

Ariane 4: shroud around stage?

launch ariane asked Oct 25, 2013 at 9:38

space.stackexchange.com

20 votes

Does the proximity of engines in engine clusters cause interference?

launch falcon-9 engines asked Mar 4, 2014 at 13:35

space.stackexchange.com

18 votes

Why did NASA discontinue use of the MMU?

space-shuttle astronauts eva astronaut-propulsion asked Nov 29, 2013 at 18:18

space.stackexchange.com

17 votes

Was Hubble really related to spy satellites?

artificial-satellite telescope optical hubble military asked Jan 20, 2014 at 20:35

space.stackexchange.com

17 votes

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

nasa apollo-program launch-site multi-launch asked Feb 17, 2014 at 11:21

space.stackexchange.com

Top Answers

Can I drive Elon Musk's Tesla after it's been in space for 100 Years?

space.stackexchange.com

Curiosity: Why did they "reinvent the wheel" instead of using pressure tires?

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Nudism in space: Why wear clothes anyway?

space.stackexchange.com

How many times do you have to circle the Earth to break orbit?

space.stackexchange.com

Why don't 747s use unreliable, but cheap, jet engines instead?

aviation.stackexchange.com

Is Nibiru real or totally science fiction?

space.stackexchange.com

How did NASA prevent third parties from spoofing Apollo communications?

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Where is the largest road network that shares a landmass with, but is disconnected from, a larger ('main') road network?

travel.stackexchange.com

How can a Mars helicopter be autonomous if there isn't a Martian GPS?

space.stackexchange.com

How did Apollo missions solve the cosmic radiation problem?

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Why is using a space elevator cheaper than rocket power?

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Why aren't we sending quadcopters to mars?

space.stackexchange.com

Is the SpaceX Falcon Heavy payload (a Tesla car) space junk?

space.stackexchange.com

What is the offset in a seaplane's hull?

aviation.stackexchange.com

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

space.stackexchange.com

Why do we not fly to space with helicopters? What are the practical altitude limits?

space.stackexchange.com

Would rocket engine exhaust create pockets of gas in space which could hinder further space exploration?

space.stackexchange.com

Falcon 9 design: Why is the cargo fairing so much wider than the lower parts?

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Is it possible to mount a telescope on a plane? Is it beneficial?

astronomy.stackexchange.com

instead of pressurizing an entire spacesuit with oxygen could oxygen just pressurize the head and the rest of the body be pressurized with water?

space.stackexchange.com

Have any space suits (not) used "pulsed magnetic devices"?

space.stackexchange.com

Why is this part of the Space Shuttle launch pad suspended so high off the ground?

space.stackexchange.com

When will New Horizons overtake Voyager 1 in distance from the Sun?

space.stackexchange.com

Can Curiosity pay InSight a visit?

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What is it exactly about flying a Flyboard across the English channel that made Zapata's thighs burn?

aviation.stackexchange.com

Can artificial satellite positions affect tides?

space.stackexchange.com

Car won't start, horn won't honk, headlights won't come on, what could cause this?

mechanics.stackexchange.com

Why didn't Voyager 1 and Voyager 2 crash on into Jupiter or Uranus when they approached near to these massive planets?

space.stackexchange.com

Why does the SpaceX Falcon 9 rocket do a 180 flip for reentry?

space.stackexchange.com

Why did NASA set up a computing facility in Bermuda in the Mercury epoch?

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