Better alternatives to SLS for deep space exploration

At the end of a lecture and presentation that I gave for Starfest 2012 at Bays Mountain Planetarium, I was asked for sources of information concerning practical deep space exploration options that make more budgetary and implementational sense than options that would involve either of the two proposed versions of the SLS launcher. 

The first of these recommended written works is an industry study from United Launch Alliance that predates SLS which was titled A Commercially Based Lunar Architecture.  In fact, the study was produced while NASA’s Constellation Moon mission project was still alive.  This study is still very valid because the huge Shuttle-derived Ares V launcher was Constellation’s functional equivalent of SLS.  Thus, to read the study as something that is currently relevant, just mentally substitute SLS wherever Ares V is mentioned.

Next I would suggest NASA’s own groundbreaking study known as Propellant Depot Requirements Status Report.  This study was released before SLS was formally named and the designs of both models of SLS were yet to be finalized, though it was already known that the final model of SLS (now known as Block II) would be Shuttle-derived and have an orbital payload capacity in excess of 100 metric tons.  The points made in this study are still very relevant if the reader just considers all references to a SDV HLLV as being SLS Block II.

A group of scientists and engineers at Georgia Tech produced the latest paper, which does a direct comparison of using existing commercial launchers for deep space exploration versus using either model or both models of SLS (Block I and Block II) for that purpose.   This paper, called Evolved Human Space Exploration Architecture Using Commercial Launch/Propellant Depots starkly reveals both the economic and functional disadvantages of SLS.   Anyone who peruses either this study or the earlier NASA study will plainly see what a threat to American spacefaring supremacy that SLS constitutes.   In fact, it closes with the conclusion that going the alternate route that does not include SLS “provides experienced and focused workforce to improve safety, operational learning for reduced costs and higher launch reliability, reduce launch costs …”

Many thanks to Clark Lindsey of New Space Watch, for making the last paper available to the public via the internet.
 

I won the Brian May "A Kind of Magic" contest from Astronomy magazine

I have been informed that my essay titled “A Different Kind of Magic” was one of two winners of the Brian May “A Kind of Magic” contest sponsored by Astronomy magazine.

As most of you probably know, Brian May is the former lead guitarist of the renowned rock band Queen.  Brian stopped his research for his astrophysics PhD in the early 1970s to begin his decades-long stint with the band, but a few years ago went back and finished his doctorate in 2007 at the age of 60.  The publishers of Astronomy were inspired by his accomplishment of a lifelong dream so many decades after he had started it.  Thus, they created the contest in his honor and named it after one of Queen's hit songs.   Each entry was to be a short essay on what the writer would do if he or she could “magically” go back to school to become an astrophysicist as Bryan had done.  In my essay, I told the story of how I have been doing exactly that, with the unswerving support of my lovely wife, Julie.  The prize awarded is a signed autographed copy of Brian’s PhD thesis: A Survey of Radial Velocities in the Zodiacal Dust Cloud.

You can now see the essays from both myself and my co-winner on Astronomy’s website: http://www.astronomy.com/akindofmagic

I am very proud to say that my co-winner is 11 year old Jay Mosley.  The story of his ambition to obtain a PhD in the study of hazardous asteroids is sure to be as inspiring to others as it was for me when I read it.  This young man is bright and motivated with a long productive future ahead of him as an astrophysics researcher.  Congratulations, Jay, and I envy you!