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bananas

(27,509 posts)
3. That's not just wrong, it's anti-science.
Wed Oct 5, 2016, 02:08 AM
Oct 2016

The solar-powered Juno spacecraft has been orbiting Jupiter since July 4, 2016:
http://www.huffingtonpost.com/karl-grossman/solarenergized-juno-to-ar_b_10699328.html

Stephen Hawking wants to use beamed energy from earth to send spacecraft to other star systems:
"Stephen Hawking and Billionaire Team Up on $100 Million Quest to Find Alien Life"
http://www.democraticunderground.com/10141412283

Obviously the beams could be solar-powered:
Each year the earth receives more solar energy than exists in all fossil and nuclear resources:

https://en.wikipedia.org/wiki/World_energy_consumption

The estimates of remaining non-renewable worldwide energy resources vary, with the remaining fossil fuels totaling an estimated 0.4 yottajoule (YJ) or 4 × 1023 joules, and the available nuclear fuel such as uranium exceeding 2.5 YJ. Fossil fuels range from 0.6 to 3 YJ if estimates of reserves of methane clathrates are accurate and become technically extractable. The total power flux from the sun intercepting the Earth is 5.5 YJ per year, though not all of this is available for human consumption.


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