HopDavid
Art, math, science, science fiction
- Location
- Ajo
- Country
- United States
- US State
- Arizona
- Occupation
- publisher weekly newspaper
- Computer Specs
- Macintosh
- Favorite (Real Life) Spacecraft
- Cassini
Signature
New at Cosmic Train Schedule: A spreadsheet for finding launch windows to elliptical orbits (like NEOs or Mars).