If Mars were as near as the moon, we should see with the naked eye clouds passing over its face; and that we never do see these on the moon, even with the telescope, is itself a proof that none exist there. Now, this absence of clouds, or indeed of any evidence of moisture, is confirmed by every one of the nearer views like those we are here getting.


The New Astronomy (1888), p. 148

Samuel Pierpont Langley Quotes

If Mars were as near as the moon, we should see with the naked eye clouds passing over its face; and that we never do see these on the moon, even...

If Mars were as near as the moon, we should see with the naked eye clouds passing over its face; and that we never do see these on the moon, even...

If Mars were as near as the moon, we should see with the naked eye clouds passing over its face; and that we never do see these on the moon, even...

If Mars were as near as the moon, we should see with the naked eye clouds passing over its face; and that we never do see these on the moon, even...