A Mars Rover There is more exploration going on today than most
anyone can imagine. More in fact, than since the Space Era
started. Every day NASA, through the Goddard Space Flight Center
publishes the Astronomy Picture of the Day. Subscribe here and
you will keep engaged. Plus come back to my site!!  While
initially, there was a space race to get to the Moon, scientists
quickly realiized that the value of rockets and specially
designed craft could teach us about our own planet.  Companies
realized that spacecraft could create new businesses,
communications, global markets such as television and
telephones. Recently GPS has emerged as specialized satellites
have been launched.  The Cassini Spacecraft Trips to other
planets and moons, impossible for humans because of the travel
times and the stress on our bodies (with our current technology)
are limited so we started building spacecraft that could
withstand the rigors of spaceflight, and we have learned an
amazing amount about our own planet and many of the pl