Moon surface reflectance asphalt apparent size brightness

A 1910 law limits building height according to the width of the street beside it, rather than by a limit tied to the Capitol or Washington Monument. City leaders have cited the rule as a reason for limited affordable housing and sprawl across the metro area.

The Moon’s permanently dark, cold polar craters suit infrared telescopes, while its far side is shielded from radio emissions from Earth. Increased human activity can spread lunar dust and erode these observing advantages unless the dust’s spread is limited.