3 ms·
In the 1500s, it might just as well be impossible to fly a spaceship to the outer edge of the solar system to confirm heliocentrism without doubt as it is right
by aurareturn 3mo ago
In the 1500s, it might just as well be impossible to fly a spaceship to the outer edge of the solar system to confirm heliocentrism without doubt as it is right now to build a solar system sized detector to look for the graviton.