Entries by Pioneer Astro

Publication | International Journal of Astrobiology | Exchange of material between solar systems by random stellar encounters

Robert Zubrin | Pioneer Astronautics, 11111 W. 8th Ave. unit A, Lakewood, CO 80215, USA
Abstract Excerpt
“It is shown that a mechanism involving only random motion of the sun with respect to the surrounding star field can account for the ∼1 per 25 Myr characteristic frequency of large cometary impacts on Earth. In the proposed mechanism, the sun travels through the Oort Cloud of an encounter star, most typically a Type M dwarf, while the dwarf flies through the Oort cloud of our Sun. As a result, Oort Cloud objects from our Solar System are precipitated in large numbers to impact planets in the dwarf star system, while the dwarf’s Oort Cloud objects are destabilized to impact planets in our Solar System.”

The Space Review | Engineering Mars commercial rocket propellant production for the Big Falcon Rocket (part 2)

Engineering Mars commercial rocket propellant production for the Big Falcon Rocket (part 2)
by Steve Hoeser
“The RWGS itself would consist of a simple compatible metal pipe, like steel, filled with a catalyst. According to experiments done by Pioneer Astronautics in Lakewood, Colorado, the best catalyst for this reaction is silica (consisting of five percent copper by weight) and a smaller amount of nickel.”