Follow Friday & Weekly Stumbles For 2011-02-18 

The Milky Way has an estimated 160 orbiting globular clusters -hundreds of thousands, and sometimes millions of stars all bound together in a tight ball due to their gravity- of which one quarter are thought to be ‘alien’ invaders from other galaxies, according to research from Swinburne University of Technology (Australia). Continue reading

Non-Rocket Spacelaunch – Tether Propulsion Safety Issues 

Tether Length Comparison

The use of tethers in space poses many challenges and safety issues. This third part to the tether propulsion article will focus on those issues. A lot of the challenges and safety issues of a space tether system are similar to those of a space elevator described in a previous article, but some are unique to the space tether concept. Continue reading

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