NASA-UAP-D5-Apollo-17-Crew-Debriefing-for-Science-1973.pdf

* APOLLO 17 
-CREW DEBRIEFING 
-
-
-
FOR SCIENCE 
JANUARY 8, 1973 
MSC-07632 
SIGNATOR 
LOC 
I\JS 
oso-44,=:-
MANNED SPACECRAFT CENTER 
HOUSTON.TEXAS 

ll9
HENRY
gravitationally holding it together°
We though it might be
(CONT D)
in the form of ionized hydrogen.
We looked for Lyman-alpha
radiation, red shifted from the ionized hydrogen, and we
didn't see any.
We set a lower limit, which
certainly ex-
cludes the possibility that the Coma cluster is held together
J
by this ionized hydrogen.
I think that may leave a real
mystery
as to what
is holding the thing together.
The fourth point may turn out to be the most interesting
thing of all.
When you look in the Milky Way, you see a
lot of UV coming from the stars, but the question is, what
do you…

120
HENRY
star; however, we know that there were no hot
stars within
(CONT'D)
our field of view.
Therefore, the most conservative inter-
pretation, I think, is that what we're
seeing is light from
hot stars in the galactic plane going up out of the plane
and reflecting off interstellar dust.
There are certain
characteristics of the spectrum, though, that don't fit that
theory, and it's at least possible that this is extragalactic
radiation.
I'm looking forward very much to the detailed
computer study of this, but it's going to take a long time.
Fifth point:
Lyman-alpha hydrogen radiation is a …