The biggest barrier to future space exploration is in our heads

With enough time, the technological challenges of sending humans to Mars and beyond are solvable. But psychologically, we’re not ready to go our home.

In 1945 British science fiction writer Arthur C. Clarke–now best knows we 2001: A Space Odyssey–correctly predicted the fabrication of satellites, the first of which launched into space in 1958. Then in 1963, Clarke predicted that a humankind would land on the moon and safely return to Earth sometime around the year 1970 — which Neil Armstrong and Buzz Aldrin did in the summer of 1969. In 1973, Clarke predicted a future where humen would be able to monitor outer-space menaces such as asteroids and other near-earth objects–NASA established its Near-Earth Object Observations Program in 1998.

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