NASA | Using Color to Search for Alien Earths

The video explores how planets reflect light differently based on their atmospheres and compositions. It highlights the Deep Impact mission's role in studying light reflection from Earth, the Moon, and Mars. A pattern emerges showing how planets like Mars, Venus, and Earth reflect varying amounts of red and blue light. Earth's unique atmosphere makes it stand out by reflecting more blue light. The video concludes with the potential to study extrasolar planets' colors, allowing us to differentiate between alien versions of known planets.

What makes Earth stand apart from other planets in terms of light reflection?

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What potential does measuring the colors of extrasolar planets hold for future astronomical studies?

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