In the last decade, NASA has shifted its priorities from manned to unmanned space exploration (probes and landers). Recently, NASA has revealed that many of these unmanned missions are step in a larger plan to send human astronauts to Mars in the coming decades. Nevertheless, while some politicians, scientists and American citizens support such a plan, others oppose it for a variety of reasons. Use the FIVE sources included in the attachment to write a synthesis essay to support NASA’s plan. Support it with certain conditions. It should be a minimum of 1,000 words (approximately four double- spaced pages) and be written in proper MLA format.