I'd like to open a business account ethambutol cena There was much concern that a government shutdown of even a few weeks would delay by over two years the planned launch of MAVEN (Mars Atmosphere and Volatile EvolutioN), our latest mission to Mars. Because the relative positions of Earth and Mars change as they orbit the Sun, favorable “launch windows” to Mars come only once every 26 months, and the next opportunity is just a month away. However, MAVEN, in addition to its own scientific goals, will be providing an improved communication link to Curiosity and Opportunity, our expensive rovers currently exploring the surface of Mars. Thus the project was rated essential and a November launch is still planned. Delaying MAVEN would have been very costly, both scientifically and financially. Like the space station astronauts, the rovers Curiosity and Opportunity will thankfully not become “lost in space.”