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notageni.us | ||
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technicshistory.com
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| | | | | In the mid-nineteenth century, a new industry emerged, based on the refining of petroleum. The human use of petroleum is ancient, and may (for all we know) date well into pre-history. In the form found most often in nature, as thick pools of bituminous tar, this sticky, potentially flammable substance found use as a caulk,... | |
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caseyhandmer.wordpress.com
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| | | | | Or, how to explore the solar system and be back in time for Thanksgiving. It's no secret that I'm a space nerd. One of the major headaches of human space travel is that if you put the enthalpy of combustion, the melting point of metal, the Tsiolkovsky rocket equation, and the escape velocity of the... | |
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educatedguesswork.org
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masten.aero
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| | | Our new Masten Mission 1 patch stars Xelene as she lights up the night on her mission to the lunar south pole. | ||
