China launched two new satellites into space Saturday, state media reported, as it builds a homegrown satellite navigation system to rival the US's Global Positioning System.
Europe's ninth and tenth Galileo satellites have crossed the Atlantic, touching down in French Guiana ahead of their joint launch this September.
The Air Force has a new advanced GPS satellite in orbit.
When extreme weather comes our way, realtime information from space can help us to decide if closing a bridge is the right thing to do.
A pair of solar eruptions over the weekend have unleashed a severe geomagnetic storm that could disrupt power and communications on Earth, US officials said Tuesday.
Europe resumed deployment of its beleaguered Galileo satnav programme on Friday, launching a pair of satellites seven months after a rocket malfunction sent two multi-million euro orbiters awry.
Europe was set to launch two navigation satellites Friday for its rival to America's GPS, the first additions to the Galileo constellation since a technical mishap misdirected two orbiters last year.
The sixth Galileo satellite of Europe's navigation system has now entered its corrected target orbit, which will allow detailed testing to assess the performance of its navigation payload.