About 140 million miles away from Earth, the most relatable planet in the solar system orbits the sun. Mars, popularly known as the Red Planet, is the fourth planet from the sun, after Mercury, Venus, and Earth. We know more about Mars than any other planet but our own. That knowledge has been gained over centuries and has grown exponentially in recent years with the successful landings on Mars of the Curiosity and Perseverance rovers in 2012 and 2021 respectively. Today we celebrate those and other accomplishments on Red Planet Day, which coincides with the launch of Mariner 4, the first probe sent to Mars, on this day in 1964.
Red Planet Day
Today in History
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Aloe in bloom
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There was gold in them there hills…
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In celebration of cats
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Seven Magic Mountains art installation, Jean Dry Lake, Nevada
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International Moon Day
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A young bull moose in Denali National Park, Alaska
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Daylight saving time
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Wilderness Act anniversary
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Flag Day
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Heavens Gate Cave, Tianmen Mountain National Park, China
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Clouds over the River of Grass
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World Penguin Day
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Happy Halloween!
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International Mountain Day
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Grandparents Day
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Great horned owl
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A lofty lighthouse and a little ocean spray
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What happened to these clouds?
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Purple crocus flowers, Seven Rila Lakes, Bulgaria
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Travel Sunday: Sintra, Portugal
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Menton, France
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A grotesque scene
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Taughannock Falls State Park
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International Day for Biosphere Reserves
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Old Rock Day
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Vasco da Gama Bridge, Lisbon, Portugal
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Andean cocks-of-the-rock, Ecuador
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World Environment Day
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