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Universe
One morning I shot an elephant in my pajamas. How he got in my pajamas, I don't know.
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Dang
One morning I shot an elephant in my pajamas. How he got in my pajamas, I don't know.
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Duncan Edwards Jones wrote: massive bug panic
Spider in the bath eh? 
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You need to reach at least 11000 m/sec to reach the moon and a little more if you want to go anywhere in the solar system. Was that really so new to you? That's one of the greatest technical problems, because rockets must burn insane amounts of fuel in a very short time to reach at least the minimum velocity.
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Sure I did, I just like it when a random news report makes me remember. I also wasn't aware that there was something atmospheric faster than the X-15, it's been a while since I was totally clued up about this stuff.
One morning I shot an elephant in my pajamas. How he got in my pajamas, I don't know.
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For example, I also never saw this[^] before, if we are already looking at the X-15.
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"in space without gravity it gets a little easier to go faster"
Who writes, and edits, this crap? Gravity? It is wind resistance that is the problem in the atmosphere. Earths gravity extends well out into space!
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Everything would be lighter if Newton had not invented gravity. 
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Gravity should not be taken lightly.
... such stuff as dreams are made on
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But that was not Newton who said that. It was Einstein.
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You need to come back down to earth.
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Munchies_Matt wrote: It is wind resistance that is the problem
So why doesn't NASA just launch rockets on still days?
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Or vacuum them before the launch
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Er, do you know what the escape velocity is, the direction of travel, and what the average wind vector on planet earth?
Now compare them.
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Munchies_Matt wrote: velocity
Munchies_Matt wrote: wind vector
Munchies_Matt wrote: direction of travel
And that's the way the Falcon made the Kessel run in less than 12 parsecs.
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CodeWraith wrote: less than 12 parsecs
It needs to be fast as there aren't any toilets on board. Weirdly enough no spaceships in Star Wars seem to have any conveniences.. 
Now is it bad enough that you let somebody else kick your butts without you trying to do it to each other? Now if we're all talking about the same man, and I think we are... it appears he's got a rather growing collection of our bikes.
modified 31-Aug-21 21:01pm.
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And since a parallax second (parsec) is a unit of length (and not of time), it must be defined as the distance to the nearest toilet.
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Escape velocity[^]
Putting all the pedantism aside, still marvelous achievements.
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R. Giskard Reventlov wrote: Putting all the pedantism pedantry aside,
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18,000 mph if memory serves me correctly. Puts a bit of wind into perspective eh?
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Escape velocity at the Earth's surface is about 11.2 km/sec, which is 40,320 km/hr, which is 25,200 mph.
If you have an important point to make, don't try to be subtle or clever. Use a pile driver. Hit the point once. Then come back and hit it again. Then hit it a third time - a tremendous whack.
--Winston Churchill
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I agree that the actual delta-v produced by any practical rocket that reaches escape velocity must be higher than 11.2 km/sec. This is because (a) the acceleration profile is not a step function, and (b) using the highest acceleration that the astronauts were capable of enduring would result in the spacecraft overheating because of air resistance (those pesky Engineering considerations... ).
This, however, that does not change the fact that the escape velocity at the Earth's surface is approximately 11.2 km/sec. This gives the absolute lower bound on the delta-v that must be given to an object that is to escape the Earth's gravity.
If you have an important point to make, don't try to be subtle or clever. Use a pile driver. Hit the point once. Then come back and hit it again. Then hit it a third time - a tremendous whack.
--Winston Churchill
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