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.
Voyager entered the heliosheath about 14 billion kilometers (approximately 8.7 billion miles) from the Sun. This is about 94 times the distance from the Sun to Earth. The heliosheath is just beyond the termination shock, the point where the solar wind slows abruptly, becoming denser and hotter.