Apollo Mission

2015 ◽  
pp. 109-110
Author(s):  
Gerda Horneck
Keyword(s):  
Apollo Mission

scholarly journals Advanced Technology Lunar Astronomy Mission, the Moon as an Immense Optical Bench in Vacuum

1998 ◽  
Vol 11 (2) ◽  
pp. 990-991
Author(s):  
Peter C. Chen ◽  
Yoji Kondo ◽  
Ronald J. Oliversen
Keyword(s):  
Advanced Technology ◽  
Optical Bench ◽  
The Moon ◽  
Atmospheric Absorption ◽  
Astronomical Observations ◽  
Small Telescope ◽  
Apollo Mission ◽  
Primary Obstacle

The Moon combines some of the most attractive features for astronomical observations from space (no atmospheric absorption, perfect seeing, etc.) and those from ground (large steady optical bench, ease of control from Earth, etc.). Astronomers have planned for telescopes on the Moon for decades but, due to its primary obstacle – high cost – they have not yet been built, save one small telescope that was carried to the Moon on an Apollo mission.

China's space station will pay political dividend

2019 ◽  
Keyword(s):  
Space Station ◽  
Political Support ◽  
Political Commitment ◽  
Human Spaceflight ◽  
Private Space ◽  
Content Type ◽  
Apollo Mission ◽  
The One ◽  
Moon Landing ◽  
New Phase

Subject China's human spaceflight programme. Significance China’s human spaceflight programme has advanced steadily, with seemingly unwavering political support. It is now ready to begin a new phase: construction of a permanent crewed space station. Impacts Institutions in other countries will benefit from opportunities to use China’s space station. Beijing’s consistent political commitment to human spaceflight may make other governments see it as a more reliable partner than Washington. China’s space station may compete with US private space stations for business from non-US clients. China has no public timeline for a human moon landing, but is putting the necessary elements in place. A Chinese crewed moon programme would likely be designed to be sustainable, unlike the one-off Apollo mission.

Apollo Mission Simulation with Visual Presentation

1970 ◽  
Vol 79 (2) ◽  
pp. 88-94
Author(s):  
Riley David McCafferty ◽  
Lawrence W. Lockwood
Keyword(s):  
Visual Presentation ◽  
Apollo Mission ◽  
Mission Simulation

scholarly journals Cracked, Porous Rocks and Fluids: Moon and Earth Paradox

Minerals ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 693 ◽  
Author(s):  
Borgomano ◽  
Fortin ◽  
Guéguen
Keyword(s):  
Large Scale ◽  
Seismic Exploration ◽  
Unexpected Result ◽  
Porous Rocks ◽  
The Earth ◽  
Apollo Mission ◽  
Effective Elasticity ◽  
Key Factor ◽  
Long Time ◽  
Source Of Information

Elastic wave velocities are key parameters in geosciences. In seismology at a large scale, or in seismic exploration at a more local and shallower scale, they were the main source of information for a long time. At the time of the Apollo mission, Anderson explained the unexpected result of very low velocities in Moon surface rocks by an intense cracking resulting from meteoritic impacts. Yet, it was also known that the Q factor was high. This could appear as a paradox. In the shallow layers of the Earth, rocks are porous. These shallow layers are of major importance in the Earth since they contain fluids. This is why velocities are higher and Q values lower in the Earth’s shallow layers than in the Moon’s shallow layers. Cracks have a determining effect on elastic properties because they are very compliant. Fluids also play a key role. Combining poroelasticity and effective elasticity, two independent theories much developed since the time of the Apollo mission, makes it possible to revisit the contrasting results observed in the Moon case and in the Earth case. Experimental results obtained on cracked synthetic glass show that dry cracks result in a strong decrease in velocity. On the other hand, saturated porous limestones exhibit a strong frequency-dependent attenuation when thermally cracked. The presence of fluid is the key factor.

Integrated operating mode of the Apollo mission simulator

1965 ◽  
Author(s):  
F. MARTIKAN ◽  
S. NASSIFF
Keyword(s):  
Operating Mode ◽  
Apollo Mission

scholarly journals Thermal Gradients in the Outer Lunar Layers

1972 ◽  
Vol 47 ◽  
pp. 372-376
Author(s):  
J. A. Bastin ◽  
S. J. Pandya ◽  
D. A. Upson
Keyword(s):  
Heat Flux ◽  
Temperature Gradient ◽  
Lunar Surface ◽  
Thermal Flux ◽  
Temperature Measurements ◽  
Thermal Gradients ◽  
Positive Temperature ◽  
Temperature Differential ◽  
Lunar Interior ◽  
Apollo Mission

During the next Apollo mission Apollo 15, it is planned to fix thermocouples at various depths up to 3 m below the lunar surface. It seems likely that the resulting temperature measurements will show a positive temperature differential with depth resulting from a net outward heat flux. It is the purpose of this paper to examine experiments already carried out which indicate a temperature gradient. Since the thermal flux is of direct importance in fundamental problems of lunar origin and the nature of the lunar interior, the relation between this quantity and the temperature gradient will be examined.

THE APOLLO MISSION

1966 ◽  
Vol 78 (4) ◽  
pp. 627-630
Keyword(s):  
Apollo Mission
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