A Mercury Rover Could Explore the Planet by Sticking to the Terminator (universetoday.com) by bookofjoe • 6 comments • 18 points Read article View on HN
6 comments
1 - https://en.wikipedia.org/wiki/Absolution_Gap
Try asking an aerospace engineer about the delta-v requirements for that. Mercury has no atmosphere - so you can't aerobrake, as we do on Mars.