Phase Four won a U.S. Air Force AFWERX contract in 2021 to test iodine propellant in its electric thrusters. Credit: Phase Four SAN FRANCISCO – Phase Four won a Defense Advanced Research Projects ...
Phase-space filling: two excitons (X) dressed by Fermi sea of ↑ electrons (red circles) displaced from equilibrium positions (empty circles), in centre an ↑ electron interacting with L exciton is ...
The moon will be almost exactly half illuminated by the sun on Sunday (Oct. 2), during a phase called the first quarter. This will also mark the closest the moon is to Earth during its first quarter ...
Rocket Lab's Electron rocket lifts off on a commercial launch mission in May 2022. The company is one of the emerging rocket companies that could compete for its next phase of National Security Space ...
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