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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 1,261 records · Page 70

Origin of the moon.

Lunar origin theories, considering moon/earth mass ratio, earth-moon system angular momentum deficiency and differential volatilization in earth

Okeefe, J. A.↗

Origin of galactic gamma-rays.

Origin of galactic gamma rays, discussing evidence in support of interstellar gas in galactic disk and production of neutral pions and bremsstrahlung

Stecker, F. W.↗

Origin of planetary atmospheres.

Planetary atmospheres origin, discussing earth formation by planetesimals accumulation and similarity to Mars and Venus, volatiles in outer planets, etc

Johnson, F. S.↗

On the origin of the heavy nuclei.

Heavy nuclei origin based on empirical abundance distribution, discussing stellar, galactic and cosmic events for nuclear genesis

Amiet, J. P.↗

Origin and history of the moon

Lunar origin and history, discussing evolution temperature, large and small craters and association with solar system evolution

Urey, H. C.↗

Hypothesis for the origin of cross-hatching

Cross hatching on various body surfaces due to periodic surface pressure fluctuations, discussing origin from counterrotating longitudinal vortices in boundary layer

Tobak, M.↗