From mammoth African elephants to giant whales, let's take a look at the 8 largest mammals that inhabit our planet.
Images of Mars taken from orbit show thousands of mounds in a region sculpted by water billions of years ago. A robotic mission may investigate the area one day.
The largest planet in our solar system appears high in the south at dusk, accompanied by two famous naked-eye star clusters, the Pleiades and Hyades, as well as several bright winter stars.
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