Q&A with Michel Denis, ExoMars flight director

A Russian Soyuz rocket fired off a launch pad in French Guiana Monday evening with satellite missions to monitor Earth’s environment, test Einstein’s theory of general relativity, and inspire the next generation of space engineers.

The launch of a Japanese H-2A rocket with the Emirates Mars Mission, a Mars orbiter developed in partnership between Emirati and U.S. scientists, was delayed Tuesday due to poor weather at the H-2A’s launch site on Tanegashima Island in southern Japan. Officials later announced that liftoff would not occur Thursday, again citing bad weather at the launch site. A new launch attempt is scheduled for Sunday, weather permitting.

NASA’s Opportunity Mars rover and Lunar Reconnaissance Orbiter, working well past their expected lifetimes, could be shut down in fiscal year 2016 as the agency tries to balance funding for older missions and development of modernized new space probes.