PREVIEW: From a longer conversation, Bob Zimmerman explicates how much is unknown about our precious sun and its sola maximum and minimum sunspot cycles.
Oct 26, 2023, 01:19 AM
PREVIEW: From a longer conversation, Bob Zimmerman explicates how much is unknown about our precious sun and its sola maximum and minimum sunspot cycles.
1800 London and Westminster seen from Greenwich
1800 London and Westminster seen from Greenwich