StyroCupMan writes "NASA has announced that it will launch a satellite to map our solar system's boundary. It will also study the particles and radiation that pose a health and safety hazard to humans. Time to invest in that shiny new spacesuit."
How much will this cost?
by
VoxVeritas
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· Score: 4, Insightful
I think this is a good idea. I just wish that they would save Hubble. They way they are dealing with Hubble is like junking your car just because it needs a new battery.
Hmmm... my girlfriend tried that logic too...
Re:Historically speaking...
by
CrimsonAvenger
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· Score: 4, Insightful
Earth's escape velocity is actually 11.1 km/s. Not sure where that 9 km/s comes from.
Read carefully. That was deltaV required to go from LEO (Low Earth Orbit) to Solar escape speed.
It assumes a starting speed of ~8Km/s (Actually, the orbit I assumed had ~7650m/s orbital speed), and a single burn in the direction of both the orbit around the Earth and the Earth's orbit around the Sun. It further assumed Solar escape speed was 42.1Km/s, which is true for a couple points along Earth's orbit, but I'm not sure exactly where, so I won't tell you the dates required for the burn.
If you add 9Km/s to your speed under those conditions, then you will find yourself moving along smartly in the plane of the ecliptic at just over 5250m/s relative to the Sun at some point in the indefinite future, when you are some arbitrarily large distance from the Sun (on the order of two light-months out, give or take a couple light-weeks)
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"I do not agree with what you say, but I will defend to the death your right to say it"
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I think this is a good idea. I just wish that they would save Hubble. They way they are dealing with Hubble is like junking your car just because it needs a new battery.
Hmmm... my girlfriend tried that logic too...
Read carefully. That was deltaV required to go from LEO (Low Earth Orbit) to Solar escape speed.
It assumes a starting speed of ~8Km/s (Actually, the orbit I assumed had ~7650m/s orbital speed), and a single burn in the direction of both the orbit around the Earth and the Earth's orbit around the Sun. It further assumed Solar escape speed was 42.1Km/s, which is true for a couple points along Earth's orbit, but I'm not sure exactly where, so I won't tell you the dates required for the burn.
If you add 9Km/s to your speed under those conditions, then you will find yourself moving along smartly in the plane of the ecliptic at just over 5250m/s relative to the Sun at some point in the indefinite future, when you are some arbitrarily large distance from the Sun (on the order of two light-months out, give or take a couple light-weeks)
"I do not agree with what you say, but I will defend to the death your right to say it"