From: The Red Horizon: Can We Make Mars Our Second Home?

What does 'home' mean when your planet is a tiny dot in the sky?

Astronauts look back at Earth as a fragile blue marble. This perspective shift, known as the overview effect, fosters deep gratitude for our biosphere.

Action

Spend five minutes tonight looking at the night sky, reflecting on how unique and rare our life-supporting Earth is.

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What else is in this exploration

3 evidence blocks3 perspectives2 visualizations6 media resources10 rabbit holes

evidence

Martian colonizers can grow certain cyanobacteria using local resources available on the planet.

evidence

Astronauts traveling to and from Mars would face a minimum radiation exposure of 0.66 sieverts.

evidence

Early Mars possessed an episodically warm surface with liquid water that carved valley networks.

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The Red Horizon: Can We Make Mars Our Second Home?

Evidence, perspectives, rabbit holes, and more