Results 101 to 110 of about 211,186 (262)

Optical astronomy package feasibility study for Apollo applications program Executive summary report [PDF]

Feasibility of adapting optical astronomy package to Apollo Application Program missions on lunar ...
Wells, E. H.
core   +1 more source

Research at the Stanford Center for Radar Astronomy Semiannual report no. 5, 1 Jan. - 30 Jun. 1965 [PDF]

Radio and radar astronomy - lunar and planetary ionospheres, atmospheres, and surfaces, and radar studies of sun and interplanetary ...
Eshleman, V. R.
core   +1 more source

The operational environment and rotational acceleration of asteroid (101955) Bennu from OSIRIS-REx observations

Nature Communications, 2019
Vicinity of small bodies might be dangerous to the spacecrafts and to their instrumentation. Here the authors show the operational environment of asteroid Bennu, validate its photometric phase function and demonstrate the accelerating rotational rate due
C. W. Hergenrother, C. K. Maleszewski, M. C. Nolan, J.-Y. Li, C. Y. Drouet d’Aubigny, F. C. Shelly, E. S. Howell, T. R. Kareta, M. R. M. Izawa, M. A. Barucci, E. B. Bierhaus, H. Campins, S. R. Chesley, B. E. Clark, E. J. Christensen, D. N. DellaGiustina, S. Fornasier, D. R. Golish, C. M. Hartzell, B. Rizk, D. J. Scheeres, P. H. Smith, X.-D. Zou, D. S. Lauretta, The OSIRIS-REx Team   +24 more
doaj   +1 more source

The Second Conference on Lunar Bases and Space Activities of the 21st Century, volume 1 [PDF]

These papers comprise a peer-review selection of presentations by authors from NASA, LPI industry, and academia at the Second Conference (April 1988) on Lunar Bases and Space Activities of the 21st Century, sponsored by the NASA Office of Exploration and
Alred, John W., Bell, Larry S., Cintala, Mark J., Crabb, Thomas M., Durrett, Robert H., Finney, Ben R., Franklin, H. Andrew, French, James R., Greenberg, Joel S., Mendell, Wendell W.   +9 more
core   +1 more source

Radio astronomy Explorer-B in-flight mission control system development effort [PDF]

A description is given of the development for the Mission Analysis Evaluation and Space Trajectory Operations (MAESTRO) program to be used for the in-flight decision making process during the translunar and lunar orbit adjustment phases of the flight of ...
Bjorkman, W. S., Lutsky, D. A., Uphoff, C.   +2 more
core   +1 more source

The Second Conference on Lunar Bases and Space Activities of the 21st Century, volume 2 [PDF]

These 92 papers comprise a peer-reviewed selection of presentations by authors from NASA, the Lunar and Planetary Institute (LPI), industry, and academia at the Second Conference on Lunar Bases and Space Activities of the 21st Century.
Alred, John W., Bell, Larry S., Cintala, Mark J., Crabb, Thomas M., Durrett, Robert H., Finney, Ben R., Franklin, H. Andrew, French, James R., Greenberg, Joel S., Mendell, Wendell W.   +9 more
core   +1 more source

Overview of lunar-based astronomy [PDF]

The opportunities along with the advantages and disadvantages of the Moon for astronomical observatories are carefully and methodically considered. Taking a relatively unbiased approach, it was concluded that lunar observatories will clearly be a major ...
Smith, Harlan J.
core   +1 more source

Geological considerations for lunar telescopes [PDF]

The geological features of the Moon that may be advantageous for astronomical observations are listed and described. The Moon's geologic environment offers wondrous opportunities for astronomy and presents fascinating challenges for engineers designing ...
Taylor, G. Jeffrey
core   +1 more source

Direct observation of ion cyclotron damping of turbulence in Earth’s magnetosheath plasma

Nature Communications
Plasma turbulence plays a key role in space and astrophysical plasma systems, enabling the energy of magnetic fields and plasma flows to be transported to particle kinetic scales at which the turbulence dissipates and heats the plasma.
A. S. Afshari, G. G. Howes, J. R. Shuster, K. G. Klein, D. McGinnis, M. M. Martinović, S. A. Boardsen, C. R. Brown, R. Huang, D. P. Hartley, C. A. Kletzing   +10 more
doaj   +1 more source

Istihsan in Determination of the Lunar Month: Jurisprudential Flexibility for Harmonizing the Ummah

Sinthop
This article examines the role of Istihsan as a method of Islamic jurisprudential flexibility in determining Islamic law, particularly regarding the beginning of the lunar month, and reviews the positions of the four prominent schools of jurisprudence ...
Geubrina Rizky Ananda Sy, Nur Mahmudi Qiromi, Mahsun Mahsun, Amir Tajrid   +3 more
doaj   +1 more source