Astrobiologist Uses Apollo Lunar Samples As Mirror Onto Early Earth

When haze built up in the atmosphere of Archean Earth, the young planet might have looked like this artist's interpretation - a pale orange dot. A team led by Goddard scientists thinks the haze was self-limiting, cooling the surface by about 36 degrees Fahrenheit (20 Kelvins) – not enough to cause runaway glaciation. The team’s modeling suggests that atmospheric haze might be helpful for identifying earthlike exoplanets that could be habitable. Credit: NASA/Goddard Space Flight Center/Francis Reddy

A Tokyo-based astrobiologist is using an ingenious new way to garner insight into Earth’s 3.5-billion-year-old biosphere.

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