This week in SF history
-- 1978, May 20. Launch of Pioneer 12 (wikipedia.org)
-- 1P/Halley observations (HT Mike Carper: harvard.edu)
Spaceflight news
-- Bangabandhu presser (reddit.com/r/spacex)(transcript: gist.github.com)
-- Community assessment (reddit.com/r/spacex)
Short & Sweet
-- Mars 2020 helicopter confirmed included (nasa.gov)
-- ULA selects the RL-10 for Vulcan upper stage. (http://www.parabolicarc.com)--
-- Astra Space had a launch abort (twitter.com/kdmgabe)