Capturing shooting stars over Hawaiʻi

Astronomers now have a new pair of eyes to detect meteors over Hawaiʻi using a state-of-the-art monitoring system installed on the rooftops of existing buildings on Maunakea and Haleakalā. The high-speed video devices are ...

What delayed Earth's oxygenation?

Powering a massive biosphere on Earth, photosynthesis is the light-mediated reaction that converts carbon dioxide and water to carbohydrates and oxygen. About 2.3 billion years ago, this reaction led to a dramatic oxygenation ...

What makes a planet habitable

Which of Earth's features were essential for the origin and sustenance of life? And how do scientists identify those features on other worlds?

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