This article was originally published at The Conversation. The publication contributed the article to Space.com's Expert Voices: Op-Ed & Insights. Samuel Lellouch is an Assistant Professor in Digital ...

WASHINGTON — Sierra Space announced May 8 it has completed a ground-based demonstration of a navigation satellite prototype for the U.S. Space Force’s Resilient Global Positioning System (R-GPS) ...

When the X-37B launches on its eighth mission no earlier than Aug. 21, it will carry an experimental quantum inertial sensor. When you purchase through links on our site, we may earn an affiliate ...