Mercury's Atmosphere

Mercury's Surface

Dr. Sprague's Web Page

Exploring Mercury: The Iron Planet by Robert G. Strom and Ann L. Sprague

Mercury Studies Group

Spectroscopic measurements of sodium in Mercury's atmosphere are shown above. High abundance of Na is red, low abundance blue. The dotted line aroung the planet represents the "seeing disk". Spectrograph slit measurements have been interpolated to portray an "image".