Which chemical compound makes Martian soil red?
Chapter 1

Red planet in ancient myths

Chapter 2

Telescopes and the canal craze

Chapter 3

The scientific reality of Mars

Chapter 4

Robotic scouts on the red sands

Chapter 5

Mars in our imagination

YOUR GOAL

Master of The story of Mars

Ch 3 · The scientific reality of Mars
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schopenhauer Martian Sunset

The red planet has a blue sunset (Oh, a blue sunset!) / Scattering light in a cool blue glow (Yeah, a cool blue glow!)

Aug 22

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schopenhauer A thin and freezing atmosphere

Aug 22

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The rust that covers the world

schopenhauer The red color of Mars is the result of chemical rusting on a planetary scale.

Aug 22

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The grand canyon of space

schopenhauer A massive canyon system on Mars dwarfs any valley found on Earth.

Aug 22

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Mars (No)
    *   *Idea 14:* Wonder Mars (Playful
BETA

schopenhauer Sort sci-fi legends and real science to discover how Mars became a cosmic wonder.

Aug 22

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Fun Fact

Martian gravity: If you weigh 100 pounds on Earth, you would weigh only 38 pounds on Mars because of its lower mass.

Aug 22

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Glossary
biosignature (noun)
Any substance, feature, or element that provides scientific evidence of past or present life. The Perseverance rover searches for these signs of life within the dry lakebed of Jezero Crater.

Aug 22

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Gossip

Which Martian landmark would you visit first?

Aug 22

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Quiz

What is the average surface temperature on Mars?

Aug 22

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schopenhauer The giant of the solar system

Aug 22

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Quiz

If you weigh 100 pounds on Earth, approximately how much would you weigh on Mars due to its lower gravity?

Aug 22

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schopenhauer The grand canyon of space

Aug 22

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Quiz

What is the name of the massive Martian canyon system that stretches over 4,000 kilometers long?

Aug 22

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schopenhauer The rust that covers the world

Aug 22

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Quiz

Approximately what percentage of the thin Martian atmosphere is composed of carbon dioxide?

Aug 22

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Quiz

What is the name of the colossal shield volcano on Mars that is the tallest volcano in the solar system?

Aug 22

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Quiz

Which chemical compound gives the Martian soil its distinctive red, rusty color?

Aug 22

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Quiz

How many moons orbit the planet Mars?

Aug 22

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Quiz

How many times taller than Earth's Mount Everest is the Martian volcano Olympus Mons?

Aug 22