3 ms·
For #1 this is addressed in the linked paper. For #2 and 3, no. Such a construction project, even using entirely materials transferred from Earth, would not me
by skywhopper 2y ago
For #1 this is addressed in the linked paper.
For #2 and 3, no. Such a construction project, even using entirely materials transferred from Earth, would not meaningfully affect the relative mass of the Earth and Moon.