Iridium Satellite has tapped Lockheed Martin and Thales Alenia Space for the final phase of the procurement process for the company’s replacement satellite constellation, Iridium NEXT. During this last nine-month phase, the two companies will vie for the prime contract, slated to be awarded by mid-2009. The current generation of Iridium satellites is expected to begin reaching the end of its operational life around 2014. Iridium NEXT will replace the company’s current system of low-Earth orbiting satellites with 66 new spacecraft covering the entire globe.

Surrey Space Technology Ltd. has established a U.S. subsidiary to take advantage of growing demand among U.S. government and other international customers for economical but advanced responsive satellites and payloads. To be based in Colorado with facilities to be established later in California and the District of Columbia, SSTL U.S. eventually will become a self-contained design, production and operating entity. Commercial Director John Paffet will head the new company.

NASA’s Cassini spacecraft has found evidence that a body of hydrocarbon on Saturn’s moon Titan is liquid, based on its reflectivity in infrared wavelengths. “Ontario Lacus” is larger than its namesake, Lake Ontario in North America, and absorbs 99.9% of the light that hits it at the 5-micron wavelength, according to Robert Brown of the University of Arizona’s Lunar and Planetary Laboratory. He is principal investigator on Cassini’s Visual and Infrared Mapping Spectrometer (VIMS). “For it to be that dark, the surface has to be extremely quiescent, mirror smooth,” he says.