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 ...

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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NASA is gearing up to return humans to the moon, but first they're using their Lunar Reconnaissance Orbiter satellite to make incredibly detailed 3-D maps of the lunar surface. Below is the latest map ...