Why we explore Mars—and what decades of missions have revealed - Deepstash
Mars
  • Mars has captivated people since we first saw the reddish hue object in the night sky. In the late 1800s, telescopes revealed a surface full of patterns and landforms thought to be a...

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Why we explore Mars—and what decades of missions have revealed

nationalgeographic.com

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Everything we've learned about Mars over the last century suggests that the planet was once able of hosting ecosystems.

  • Mars is just over half the size of Earth....

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When scientists view the Martian surface, they see branching streams, river valleys, basins, and deltas, suggesting that the planet may have once had a vast ocean covering its northern hemi...

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Since 1960, dozens of spacecraft have been sent to Mars. It is difficult to send a spacecraft to Mars and even harder to land on the planet because of the thin atmosphere.

Data revealed the...

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Once every 26 months, Earth and Mars are aligned to enable spacecraft to reach it in about half a year. Space agencies launch probes during these conjunctions.

  • The m...

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