Closest in 50,000 Years
Every news outlet is reporting that Mars is closest to Earth in 50,000 years.
But who did the calculation? Anybody whom we know?
When was the calculation made? Did Caesar know this? Did Galileo know? Did Newton know? Did Halley?
How much closer was Mars 50,000 years ago than today?
How close will the two planet ever get? When will that happen?