Planetary Geography

The surface of Mars: (left) as seen through the Hubble Space Telescope, and (right) as mapped by Percival Lowell in 1905 and showing the locations of ‘canals’. Images: NASA Photojournal image PIA03154 © NASA/Hubble Heritage Team and Lowell, 1908.

Liquid Water on Mars

A.J. Rohn

An article in the Summer 2015 issue of Geography addresses how water and historical climate change have transformed the landscape ­of Mars.

A view of green and red lights in the sky over the Earth.

Spooky Sky Created by a Coronal Mass Ejection

Caitlin Dempsey

An eerie night sky in Norway as the result of a coronal mass ejection (CME).

This EPOXI mission image shows what an Earth-like exoplanet might look like from afar. Image credit: NASA/JPL-Caltech/UMD/GSFC

What is Exo-cartography? Mapping the Climate and Surface of Exoplanets

Elizabeth Borneman

Exo-cartography or extrasolar cartography is the science of mapping planets that are outside of Earth’s solar system.

The movement of Earth's north magnetic pole across the Canadian Arctic. Red circles are observed magnetic pole positions, blue circles are modeled positions. Figure: Cavit, WikiMedia Commons, CC BY 4.0

Magnetic North is Constantly Shifting

Caitlin Dempsey

The magnetic poles shift each year due to changes in the Earth’s core in response to charge particles emitted by the sun hitting the earth’s magnetic field.