Broadcast 3421 Dr. Gary Greenberg

The Space Foundation Conference

01 Dec 2019 Dr. Gary Greenberg
Your Amazon Purchases Helps Support TSS/OGLF (see

Feedback: What did you think of this show?: 

Guest: Dr. Gary Greenberg; Topics:  special 3D imaging for art with science of sand, lunar sand, Martian dust, 3D Microscopes and much more.

Please direct all comments and questions regarding specific Space Show programs & guest(s) to the Space Show blog which is part of archived program on our website,  Comments and questions should be relevant to the specific Space Show program. Written Transcripts of Space Show programs are a violation of our copyright and are not permitted without prior written consent, even if for your own use. We do not permit the commercial use of Space Show programs or any part thereof, nor do we permit editing, YouTube clips, or clips placed on other private channels & websites. Space Show programs can be quoted, but the quote must be cited or referenced using the proper citation format. Contact The Space Show for further information. In addition, please remember that your Amazon purchases can help support The Space Show/OGLF. See   

We welcomed Dr. Gary Greenberg to the program for a one segment 91 minute discussion of science blended with art through his 3D imaging work described during the program.  To follow along, visit his website,  Follow his suggestions and click on the imaging items when he talks about them, especially lunar sand.  Gary's special patented 3D microscope information can be found at

We started our discussion by asking our guest to introduce us to his topics and to tell us how he went from being a Ph.D and assistant professor in developmental biology to developing special 3D microscopes and blending art with science through his imagine of sand, flowers, and other items.  As for sand, he talked about having been able to examine lunar sand (regolith) which led to a discussion about the difference in lunar sand under a 3D microscope and terrestrial sand.  This discussion led us to learning about the difference in terrestrial sand from the desert to the beach, to highly eroded sand with round edges to less eroded sand with sharp edges.  We also talked about what gives sand color such as white sand or pink sand.  Our guest was asked about Martian dust with his imaging system.  Since there has been no Martian dust on Earth so far as we know it, he talked about imaging Martian meteorites and what is revealed using a 3D imaging tool.  Before moving on, Gary talked in general about regular microscopes and then the 3D microscope, the field of vision, the source of light and what one can see differently using 3D imaging.  Gary mentioned other types of microscopes such as a stereo microscope.  Listeners also asked him about 3D telescope imaging per above, plus we talked about the Hawaiian special telescopes as  Pan Starrs and the 30 meter controversy.   Later he described how that instrument can be used with Earth imaging of the same image but at different times of year to create the stereo image. 

Gary had much to say about art through his imaging.  He advocated STEAM rather than STEM and did a good job of presenting an artistic view of science through his advanced imaging techniques.  Furthermore, we learned that a 3D microscope was going to the ISS in the near future.  Don't miss what he said about this.  As part of our lunar sand discussion, later in the show a listener asked Gary if he had looked at simulated lunar regolith through is special microscopes.  The answer was yet but don't miss what he said about imaging simulated lunar sand.

Marshall called to talk about Mars dust/sand/regolith.  Marshall got Gary to do the comparisons with Mars sand and lunar sand.  By the way, don't miss what he said about using the term "soil" for lunar or Martian regolith.  Marshall was the only caller for this program.

Other topics for this program included imaging food, flowers, even placing a 3D microscope on a space tourism flight for the benefit of the spaceflight participants.  Gary also took the opportunity to share with us many of his teaching experiences, including teaching younger students and offering suggestions for the best way to reach them with science, art, and associated topics.  Before the program came to a close, a Phoenix listener asked about electron microscopes and how they compared and worked vis a vis the 3D microscopes developed by our guest.  Don't miss what Gary said about electron microscopes.

Please post your comments/questions for Dr. Greenberg on the blog for this show.  You can reach our guest through me or his websites listed above. 




The microscopic world of sand and art and science

WARNING: Using Disqus Comments on the Space Show:

To ensure your comments do NOT get caught in the Disqus automatic spam filter systemplease login to your Disqus account or create a verified/approved Disqus account.

Posting multiple URL links WILL TRIGGER the Disqus automatic spam filter system.