Le Conte, David December 6, 1998 | Greenbelt, MD: NASA Goddard Space Flight Center |
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NASA Goddard Space Flight Center | 9; for 410 years, see Steel, p |
"1970 solar eclipse as 'seen' by a torsion pendulum".
11Littmann, Mark; Willcox, Ken; Espenak, Fred 1999 | 62 4 : 041101 R |
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"Eclipse Flight of Concorde 001" | Dobson, Roger August 21, 1999 |
Espenak, Fred August 28, 2009.
26NASA Goddard Space Flight Center | Greenbelt, MD: NASA Goddard Space Flight Center |
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Espenak, Fred March 24, 2008 | "Solar Eclipses That Changed the World" |
Littmann, Mark; Willcox, Ken; Espenak, Fred 1999.
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