rgclark

4 ms·

1. 1.▲
   Kilometers-long water streams for a space tower and to fight wildfires

   1 points by rgclark 8y ago|0 comments
2. 2.▲
   by rgclark 8y ago

   Shades of “Blade Runner”.
3. 3.▲
   Beamed orbital propulsion, space solar power, laser missile defense doable now

   2 points by rgclark 8y ago|0 comments
4. 4.▲
   Laser Weapons Not yet Ready for Missile Defense(spectrum.ieee.org)

   2 points by rgclark 8y ago|0 comments