An Ex Rocket Man's Take On It

There is a joke circulating in Germany after former President Trump won our election.   See the first figure .   I find it rather telling,  ...

There are two pictures and a lot of notations in the figure.  Near center is a plot of altitude versus velocity,  similar in format to a sta...

I found this on LinkedIn.  It’s too good not to re-post here.  While it is pointless trying to change the minds of Trump-cult believers,  pe...

My wife found this somewhere on Facebook.  It was too funny not to repost here.  While intellectually I know it is likely that different s...

Note:  a version of this article appeared as a board-of-contributors column in the Waco "Tribune-Herald" for Tuesday,  15 October,...

This concept applies to either arrivals or departures from a planetary body.  Arrival and departure would take place at the periapsis of an ...