B (5)
::: SO
13 (25)
At the same time, it is difficult to detect the zodiacal band through
the spacecraft window with its restricted angular view since one can-
not sweep his eyes over a wide enough arc to see the bright hand stand-
ing out \,'ith re~pect to the darker adjacent sky. By contrast, to locate
the zodiacal hand Oh:;t'TVi ng from the earth's surface, one can sweer
over 2,11 arc: of some 90°, in the center of which the bright banJ can
be ro au i1~' d i:; t j J.,lercUY'y 9). From his descrip-
tion, 1 concluJed that he dist inf~uished the zodj acal band sorne 6°
from rhe sun.
TVo'iEght Ban:~,~.
'J11o satellite "day" for orbits relativoly ncar the earth is ahollt
4S min. long, The ~unrise and sunset sequence occurs during each sat-
ellite day. 'n1C bright t\dlight band extending along the earth's sur-
face and centered above the sun is ref0rred to by the astronauts as
of spectacular heauty.
S. Observations of Artifncts in Space
In the decadl' since till' launching of Sputnik I (4 October 1957) a
lar~e number of object~ have been put in orbit. With each launch, an
U\'cr:>gc? of five objects go into orbit. As of ,January 1967, a total
of ~,6()6 ohjects had het'n identified from 512 launchings, of which
1.139 \"ere ~.;ti]l in orbit and 1 ,,'()7 had n~cntercd. '1110 ohjects in
quasi-stable orbits (Ire l'ata1ogued hy the North American Ail' Defense
Command l:\lJRAD), and up-to-date lists of orhital ch(lcactcristics arc
gi\'cn annually in ri:lIwtary and Space Science (Quinn and King-Hole,
19b~1 from \"hic.:h tahul:ll' alld graphic statistic", have been prep,Jrcll for
this report. lTables 7 and ~ and Fig. (I ).
294
Il (S J
--- =: SO
B (25)
At the saIne time, it is difficult to detect the zodiacal band through
the spacecraft window wi~\ its restricted angular view since one can-
not sweep his eyes over a wide enough arc to see the bright hand stand-
in!: out \,'ith respect to the darker adjacent sky. By contrast, to locate
the :odIacal hanJ ob~~'rvi ng from the earth's surface, on€ can sweep
over 2.1\ arc: of some \lO°, in the center of which the bright hand can
be rcadi 1~' -li:;t ir.;.;uishcd,
'TIle IIIOst ,:ollvincing Ucscrlption of a visual sighting of the zod-
i:1C81 band \,'as by a~tl'Oll(lllt Cooper (~lercUl'Y 9). From his descrip-
tion, 1 conduJeJ that he l!jstin,~uishe,1 the zodiacal band sarno 6°
from rJ\(' sun.
1'1>1 1 :.gh t Ba.!::1.~.
'1110 satellite "day" fot' orbits rclativoly ncar the earth is about
45 min, lon~. The sunr iSt? o.nd sunset sequence occurs during e,lch sat-
ellite Jay. 'nlC bright t\dlight band extending along the earth', ~ur
face anJ centered above the sun is referred to by the astronauts as
of spectacular beauty,
S, Llbst'rv;ltions of Art if:lcts in Space
In the decadt' since till' launching of Sputnik J (4 October 1957) a
lar)!!; Ilumber of objects have been put in orbit. With each launch, an
a\'cngc? of fivc objects go into orbit. As of ,January 1967, a total
of ~,6()(1 ohjects had hCl')) identified from 512 launchings, of which
1,139 !>Cl't' "till in orbit and 1 ,,'r)7 had rr~cntercd, '111C ohjects in
quas i-stabh' orili ts los 7 and t' and F i h' (l ).
294