With new analysis, Apollo samples brought to Earth in 1972 reveal exotic sulfur hidden in moon's mantle

When astronauts returned from NASA's final Apollo moon mission in 1972, some of the samples they collected were sealed and ...

The Mystery of How Quasicrystals Form

New studies of the “platypus of materials” help explain how their atoms arrange themselves into orderly, but nonrepeating, ...
IEEE

A Generalized Beta Prime Distribution as the Ratio Probability Density Function for Change Detection Between Two SAR Intensity Images With Different Number of Looks

Abstract: In the framework of the comparison of synthetic aperture radar (SAR) imagery from the Magellan space mission and the VISAR and VenSAR radar instruments which will be onboard the forthcoming ...
IEEE

Integrated High-Medium-Low Orbit Satellite Positioning with Enhanced Clock Error Modeling and Adaptive Weighting Strategy

Abstract: The integration of high, medium, and low Earth orbit (HML-LEO) satellites for positioning offers a promising solution to overcome the limitations of standalone global navigation satellite ...