It's not as difficult as you might think to look into the past.
Are you familiar with a geostationary satellite? That’s a satellite that orbits the equator at the same speed as the earth turns, so it’s always over the same spot of land, 22,500 miles up. Could you let down a rope and pull up some supplies? Learn more on this Moment of Science.
Could you escape a falling elevator by simply stepping out? Learn more on this Moment of Science.