American Geophysical Union

Winds drive dune movement on Mars

Sand dunes, a common feature on the surface of Mars, can provide a record of recent and past changes. Some dunes near Mars’ polar areas have been observed to move recently due to carbon dioxide ice sublimation, ...

dateNov 16, 2011 in Space Exploration
shares0 comments 7

Moon's shadow, like a ship, creates waves

During a solar eclipse, the Moon's passage overhead blocks out the majority of the Sun's light and casts a wide swath of the Earth into darkness. The land under the Moon's shadow receives less incoming energy ...

dateOct 05, 2011 in Earth Sciences
shares0 comments 3