SpaceX president Gwynne Shotwell recently did a TED talk that included a slide showing three designs

A brief note.  I’m dropping Google Ads from my web site for the foreseeable future.  ...

Next Big Future has produced a number of articles recently on breakthrough propulsion.  Here is

There has been much said of the recent budget proposal, that zeros out funding for the International

Lots of small updates. I've added a Patreon account so that people interested in this site can help

Video of my talks at UC Irvine for the Mars Society are now available on YouTube.  The slides

Elon Musk recently did a Reddit Q&A with members (Ask Me Anything).   This mostly focuses on details

Why an eBook?Under the category of Entrepreneurship, writing books on whatever topics you can allow

I’ve uploaded the slides from my most recent Mars Society presentations on the Videos page of this

Microgravity has various negative impacts on health.  While bone and muscle loss are the most well