Executive Orders are controversial because they allow the President to make major decisions, even law, without the consent of Congress. This, of course, runs against the general logic of the Constitution -- that no one should have power to act unilaterally.
Voyager 1 has since become the fastest and most distant man-made object in the Universe, travelling at around 61,500km/h at a distance of 17.6 billion km from the Earth. Perhaps most incredible of all, NASA is still in communication with it, despite radio signals taking 16 hours to reach it. Image Â© NASA.
Blown off the Earth with the fastest speed ever (for a launched spacecraft), it's now traveling at more than 50,000 miles per hour. The voyage that would have taken you more than 6,000 years in an SUV or 600 years in a jetliner has taken New Horizons a little under a decade.