The lines on a surface map are called isobars. Isobars are lines of constant pressure which are measured in units called millibars. The numbers indicate the amount of air pressure, in millibars, that ...

The newest exhibition at the David Rumsey Map Center, explores how maps go beyond traditional terrain, taking visitors to caves, a misguided town in the Alps and even the Moon.

Brown dwarfs are peculiar: they have a greater mass than planets, but are not massive enough to start a nuclear fusion process in their core. In March 2013, researchers announced the discovery of a ...

Two new papers from members of the MESSENGER Science Team provide global-scale maps of Mercury’s surface chemistry that reveal previously unrecognized geochemical terranes large regions that have ...

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