1. Engineering: Re: Is Transhab as durable as the spacecrafts of today?, David Ellis, Researcher, NASA Lewis Research Center Tue Jan 26 14:12:19 1999
2. Science History: Re: Where germans during WW2 able too now who listend too englisch broadcoasts, David Ellis, Researcher, NASA Lewis Research Center Mon Jan 25 10:03:40 1999
3. Physics: Re: Would a ball filled with water explode in space ?, David Ellis, Researcher, NASA Lewis Research Center Wed May 24 11:13:25 2000
4. Environment/Ecology : Re: Does the solid rocket fuel that NASA uses depleat the Ozone Layer?, David Ellis, Researcher, NASA Lewis Research Center Tue May 6 09:11:28 1997
5. Engineering: Re: could you tell me, what's the first lubricant made in space?, David Ellis, Researcher, NASA Lewis Research Center Fri Jul 16 07:51:24 1999
6. Engineering: Re: Can a thermal gradient cause electrical current in carbon fiber?, David Ellis, Researcher, NASA Glenn Research Center Mon Jan 23 15:50:04 2006
7. Chemistry: Re: Which elements trigger the highest specific heat capacities in materials?, David Ellis, Researcher, NASA Lewis Research Center Tue Aug 29 15:41:22 2000
8. Engineering: Re: why is the Shuttle launching pad located in Florida, far from Houtson contr, David Ellis, Researcher, NASA Lewis Research Center Fri Dec 4 08:46:34 1998
9. Engineering: Re: Why do space vehicles take off vertically?, David Ellis, Researcher, NASA Lewis Research Center Mon Dec 21 16:41:27 1998
10. Engineering: Re: Do solar cells in space convert Xrays, microwaves, etc. to power?, David Ellis, Researcher, NASA Lewis Research Center Wed Sep 29 11:40:42 1999
11. Engineering: Re: How do nonexpandable materials work?, David Ellis, Researcher, NASA Glenn Research Center Mon Jul 3 09:10:27 2006
12. Engineering: Re: Have gyro-manuvering systems been developed for rotating/thrust?, David Ellis, Researcher, NASA Lewis Research Center Tue Aug 31 10:00:19 1999
13. Engineering: Re: How does iron in reinforced glass help make the glass stronger?, David Ellis, Researcher, NASA Lewis Research Center Mon Jan 11 09:50:49 1999
14. Engineering : Re: How does the ball float in those car compasses?, David Ellis, Researcher, NASA Lewis Research Center Mon Jan 27 10:57:25 1997
15. Engineering: Re: How do we protect astronauts from radiation in space?, David Ellis, Researcher, NASA Lewis Research Center Mon Apr 27 15:55:50 1998
16. Physics: Re: what is the best way to measure shock absorption of shin guards?, David Ellis, Researcher, NASA Glenn Research Center Wed Feb 15 16:35:57 2006
17. Physics: Re: Does exhaust hitting the ground help a rocket take off?, David Ellis, Researcher, NASA Glenn Research Center Thu Dec 10 08:42:03 2009
18. Astronomy: Re: what does best on best mean?, David Ellis, Researcher, NASA Glenn Research Center Mon Sep 8 15:08:11 2008
19. Biophysics: Re: What do astronauts experience during launch?, David Ellis, Researcher, NASA Glenn Research Center Wed Mar 7 09:50:19 2007
20. Engineering: Re: eucrystals, David Ellis, Researcher, NASA Lewis Research Center Thu Aug 20 13:01:59 1998
21. Engineering: Re: how could I build a rocket stabalizing gimbal, David Ellis, Researcher, NASA Lewis Research Center Fri Apr 27 14:02:01 2001
22. Engineering: Re: What materials are used in magnetic chucks such as on surface grinders, David Ellis, Researcher, NASA Lewis Research Center Mon Dec 10 15:30:35 2001
23. Chemistry: Re: Hydorgen peroxide catalysts, David Ellis, Researcher, NASA Lewis Research Center Mon Jul 13 12:31:10 1998
24. Astronomy: Re: How does NASA decide which space shuttle to use for a given mission?, David Ellis, Researcher, NASA Lewis Research Center Tue Apr 10 16:38:20 2001
25. Engineering: Re: are the launch pads for rockets ever destroyed?, David Ellis, Researcher, NASA Glenn Research Center Mon Feb 12 11:40:03 2007