Elon Musk @elonmusk
@Erdayastronaut @SciGuySpace Important technical note: due to higher O/F of CH4 vs RP1 (oxygen is dense) & significant density increase of subcooled CH4 (plus no common dome insulation needed), plus cryo strength bump of CH4, tank mass of CH4/O2 stage is almost same as RP1/O2. — PolitiTweet.org