Get ready to watch the transit of Mercury across the sun. Rediscover what MESSENGER found.
Find out more about observing and photographing the May 9, 2016 Mercury transit.
In the depths of the dark, frigid outer solar system, sub surface oceans have been confirmed within many of the moons of...
Find out more about observing and photographing the May 22, 2016 Mars Opposition.
|Dr. Nancy L. Chabot||APL||Mercury|
|Dr. Rosemary M. Killen||GSFC||Mercury|
|Dr. Sabrina Savage||MSFC||Mercury Transit|
|Dr. Aaron Clevenson||Lone Star College||Mercury Transit, Mars Observing Campaign|
|Lou Mayo||GSFC/ADNET||Mercury Transit, Mars Observing Campaign|
|Dr. Gina DiBraccio||GSFC||Mars at Opposition|
|Dr. Christopher P. McKay||AMES||Mars at Opposition|
|Dr. Glyn A. Collinson||GSFC||Mars at Opposition|
Some sunspots are cool enough that water vapor can form at a temperature of 1,550 °C.