cesis Karma 424 Created 9 years ago Recent Submissions 1. ▲ Propellantless Propulsion in Gravity Field (space.stackexchange.com) 2 points · 2 years ago · 0 comments 2. ▲ 5k-year-old man was 'oldest plague victim' (bbc.com) 3 points · 4 years ago · 0 comments All submissions on HN · View profile on HN