News for hackers. Stuff that matters.

A comment on xAI joins SpaceX. Parent comment

Re:xAI joins SpaceX by Neywiny on Monday February 02, 2026 @05:56PM (#46863330)
Not to be an Elon defender, but can you back up your 0.15/ton? My own searching puts ROSA orders of magnitude higher. Each array is 600kg (0.6t) and puts out 20kw (https://space.skyrocket.de/doc_sdat/irosa-1.htm) which makes 20/0.6 = 33.333 kw/ton
[ Parent | on HN ]
Re:xAI joins SpaceX by CGMthrowaway on Monday February 02, 2026 @06:00PM (#46863388)
You're right, my fault. I made an math booboo somewhere. Your calc seems right
[ Parent | on HN ]
Re:xAI joins SpaceX by Neywiny on Monday February 02, 2026 @06:07PM (#46863504)
Hey all good. My advice, not that you asked for it, is to put the math in the comment. Even as a footnote. I've found myself backtracking a lot of math comments after I stare at it in the text box for a few seconds.
[ Parent | on HN ]