Reinventing Innovation With Small Satellites

When NASA first formed, getting to space was extremely dangerous and no one really knew how to do it. Therefore, there was an acceptance of a large amount of risk. Part of the reason for this is that the amount of money invested in NASA was enormous – at one point in the late 1960s, […]

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Why Are Rockets So Heavy?

One of the big problems with rockets is their size.  They need to be truly humungous to get anything into orbit.  Interestingly, the reason for this was explained back before modern day rockets were even invented. A Russian scientist named Konstantin Tsiolkovsky described why rockets need to be really big way back around the turn of […]

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The Limits of Chemistry

In the last post, I talked about how it was basically impossible for humanity to get to another star using modern technology. For this post, I would like to talk about why that is, and why we don’t have space hotels or moon bases yet. The whole reason comes down to chemistry. The vast majority of […]

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What I do. Simply.

I was asked to give a five minute talk describing what I do at a conference of people who study similar things as I do. Specifically, I was asked to give a talk describing modeling using only the 1000 most common English words used.  They gave two web sites, which don’t match each other exactly, […]

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Thrust

A couple of posts ago, we discussed the idea of Newton’s Third Law: for every action, there is an equal and opposite reaction.  Let’s figure out how to mathematically apply that to getting a rocket off the ground and investigating how airplanes fly! The main idea with thrust is that if you throw enough stuff […]

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