space travel Archives – The Green Optimistic green tech news, since 2008 Wed, 07 Oct 2015 17:18:35 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 2667534 Elon Musk on Nuking Mars, Greenhouse Effect and CO2 https://www.greenoptimistic.com/elon-musk-nuke-mars-co2/ https://www.greenoptimistic.com/elon-musk-nuke-mars-co2/#respond Wed, 07 Oct 2015 17:18:35 +0000 https://www.greenoptimistic.com/?p=56906 Right now on Earth, the greenhouse effect is seen as a bad thing, but it’s easy to see why it’s important when looking at Mars. The red planet has no atmosphere and is therefore too cold for humans to inhabit anytime soon. This is partly because there is no greenhouse effect. It’s important to trap at […]

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]]> https://www.greenoptimistic.com/elon-musk-nuke-mars-co2/feed/ 0 56906 Solar Power Space Engine Uses No Propellant https://www.greenoptimistic.com/solar-power-space-engine-uses-propellant-20140807/ https://www.greenoptimistic.com/solar-power-space-engine-uses-propellant-20140807/#comments Fri, 08 Aug 2014 03:55:17 +0000 https://www.greenoptimistic.com/?p=48788 Once in space, unobstructed views make solar power the perfect source of continuous energy, but to move around still requires propellant. One common aspect of all space flight, whether sending microbes, monkeys, men, or machines, into space, is the exorbitant fuel expenditures just to get the stuff up there. Currently, to get any material to […]

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