See 14 Mind-Blowing Places in Our Solar System

Valles Marineris: The Grand Canyon of Mars

Valles Marineris is the largest canyon in the solar system, stretching for a whopping 370 miles (600 kilometers). At its deepest, the canyon reaches a depth of 5 miles (8 km). The Grand Canyon in Arizona is a bit longer, but it’s only 1.1 miles (1.8 km) deep. Keep in mind, however, that the diameter of Mars is only slightly more than half of Earth’s diameter. Fair to say, if Mars had a vibrant tourist industry, Valles Marineris would be a must-see.

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An illustration showing two planets colliding as they orbit a main sequence star.

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Space & Spaceflight Passant Rabie Mar 13

$A bright, greenish coma and a tail are shown in this three-minute exposure taken using a 6″ Takahashi refractor located in New Mexico. At the time of this image, comet Lovejoy was 40 million miles from Earth and 88 million miles from the sun.$

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An illustration of a row of mirror satellites in Earth orbit.

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