Triton’s Spring Melt Cards, Pack of 12
Rainbows may appear during eruptions of sun-darkened methane gas as seasons change on Neptune’s moon Triton, as depicted by Alan Gutierrez. Ice caps of frozen nitrogen melt and release methane from under the ice which has been heated by the distant Sun. When enough pressure builds up, the methane vents like a geyser.
Pack includes twelve 7″x5″ greeting cards, blank on the inside, description on the back, with white envelopes.