New research shows how Mars may have undone its own habitability, while Earth stayed stable enough to support life.

Algae grown under Mars-like conditions could make bioplastic building materials for structures to harbor life in space.

By discovering carbonate rocks, NASA's Mars rovers may have unlocked the key to understanding the fate of the Red Planet's climate.

One of the great unsolved problems in modern planetary science is written on the surface of Mars. Mars has canyons that were ...

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1951 Flight to Mars In this sci-fi drama, scientists arrive on Mars to find a planet populated by a subterranean, dying race similar to humans—who may be plotting a desperate invasion of Earth.

That fiery force comes from Mars, the red-hot planet of action, sex, and drive in astrology. While your Sun sign reveals your core identity, this planet governs how you go after what you want.

NASA Odyssey orbiter snapped a first-ever image of a Mars volcano peeking above clouds before dawn. It’s twice as tall as Earth’s largest volcano.

Washington People from cultures across the world have been looking at Mars since ancient times. Because it appears reddish, it has often been called the red planet. The English name for the planet ...

Arsia Mons, which dwarfs Earth's tallest volcanoes, and its two neighboring volcanoes are often surrounded by water ice clouds, especially in the early morning. The image released Friday marks the ...

While we have a clearer understanding of Mars' geography, including its towering volcanoes, vast canyons, and ice caps, the planet’s past and potential for life continue to elude us.