1,221 to 1,227 of 1,227 Results
Aug 1, 1998
Khurana, K. K.; Kivelson, M. G.; Stevenson, D. J.; Schubert, G.; Russell, C. T.; Walker, R. J.; Polanskey, S., 1998, "Oceans in Europa and Callisto: Independent Evidence from Magnetic Perturbations", https://hdl.handle.net/2014/20373, ['Nature', 'USA'], JPL Open Repository
Galileo, the first artificial satellite of an outer planet, has been orbiting Jupiter since Dec 7, 1995. The spacecraft encounters one of the four Galilean satellites on each orbit. |
May 1, 1998
Ostro, S. H.; Sagan, C., 1998, "Cosmic Collisions and the Longevity of Non-Spacefaring Galactic Civilizations", https://hdl.handle.net/2014/19498, ['Astrodynamics and Geophysics', 'USA'], JPL Open Repository
Interplanetary collision hazards in many planetary systems force civilizations to become spacefaring or extinct. This selection pressure apparently acts on a timescale of 10***sup5*** years on Earth's current human civilization, but may act on shorter or longer timescales elsewhe... |
Jan 26, 1998
Hemmati, H.; Lesh, J., 1998, "A Combined Laser-Communication and Imager for Microspacecraft (ACLAIM)", https://hdl.handle.net/2014/19025, ['SPIE, Laser Communications Meeting', 'San Jose, California, USA'], JPL Open Repository
ACLAIM is a multi-function instrument consisting of a laser communication terminal and an imaging camera that share a common telescope. A single APS- (Active Pixel Sensor) based focal-plane-array is used to perform both the acquisition and tracking (for laser communication) and s... |
Sep 26, 1997
Konopliv, A. S., 1997, "Lunar Prospector: Gravity Mapping", https://hdl.handle.net/2014/22621, USA, JPL Open Repository
Lunar Prospector, the third mission of the NASA Discovery series, is scheduled to launch Oct. 24, 1997. One of the objectives of the mission is to map the gravity field of the Moon using radiometric Doppler tracking data from JPL's Deep Space Network. |
Jul 14, 1997
Kelly, John C., 1997, "Formal Methods Specification and Analysis Guidebook for the Verification of Software and Computer Systems Volume II: A Practitioner's Companion", https://hdl.handle.net/2014/22415, JPL Open Repository
This volume presents technical issues involved in applying mathematical techniques known as Formal Methods to specify and analytically verify aerospace and avionics software systems. |
Jan 1, 1995
Woo, R., 1995, "Fine-Scale Filamentary Structure in Coronal Streamers", https://hdl.handle.net/2014/29945, Astrophysical Journal Letters, JPL Open Repository
Doppler scintillation measurements of a coronal streamer lasting several solar rotations have been |
Dec 5, 1994
Calhoun, M.; Kuhnle, P.; Law, J., 1994, "Fiber Optic Reference Frequency Distribution to Remote Beam Waveguide Antennas", https://hdl.handle.net/2014/33352, ['Precise Time and Time Interval Planning Meeting', 'Reston, Virginia, USA'], JPL Open Repository
FTS support of DSS 24 for tracking unmanned spacecraft and supporting scientific experiments. |
