Description:
Technical and general issues related to space flight. (Moderated)
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Venus
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1. Venus has no magnetic field. 2. Venus has a thick atmosphere causing excessive green house effect. Why doesn't the sun's solar flares blow away the atmosphere? ============================== ========= MODERATOR'S COMMENT: This should really go to sci.space.science, but I have not gotten moderation working on that yet. so for now I'll accept this here, but let's focus on actual factual content. GdM... more »
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Sea Launch has filed for bankruptcy
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Filed for Chapter 11 on Monday: [link] This is really sad, as they did come up with a very clever concept for the whole operation, but I guess the payloads just weren't there to make it work from a economic point of view. Pat
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Notice: SST Moderators
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Derek and I will not be as available for the next week or so as usual. I will literally be in a hole in the ground most of the week. And my connectivity above ground is very slow. Please be patient.
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help - gravity problem
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I thought I understood basic gravity problems but the following high school physics problem from my daughter has me stumped ( I think) Q. a disabled ( meaning of disable not defined) satellite of mass 2400kg is in orbit at a ht of 2000 km above the earth at a speed of 6900 m/s. ( my calc show that is exaclty the speed required for a... more »
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Meteoroids in the main asteroid belt
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Space debris in LEO is somewhat of a problem. But I'm wondering about the space debris problem in the asteroid belt. Let's say we build a mining colony on a main belt asteroid, does anyone know what kind of hazard meteoroids would be? What would be a typical velocity and at what frequency impacts can be expected?... more »
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Distributed computing demonstrated on orbit?
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Has any group of spacecraft demonstrated distributed computing ("a program is split up into parts that run simultaneously on multiple computers communicating over a network') while in space? The Emerald nanosatellite mission was supposed to demo this, but never got launched. A Surrey website says a loosely coupled version has been... more »
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Aerobraking on the way up
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A first step towards building a fully reusable rocket would be to have a reusable first stage. You would want to minimize maintenance cost on that first stage. Preferably it would be a Buck-Rogers type of first stage, you use it, it comes back, you fill it up, and you use it again. You want it to be inexpensive to use, so you don't want to need an... more »
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