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Starry-eyed: New planetarium projector like a 'time capsule'

About five years ago, the projector in the John Rudolph Planetarium on Bainbridge Island stopped working and ended the popular weekly shows that drew visitors and budding astronomers to the Ritchie Observatory in Battle Point Park. ....

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Most life on Earth will be killed by lack of oxygen in a billion years

Alexandr Yurtchenko / Alamy
One billion years from now, Earth’s atmosphere will contain very little oxygen, making it uninhabitable for complex aerobic life.
Today, oxygen makes up around 21 per cent of Earth’s atmosphere. Its oxygen-rich nature is ideal for large and complex organisms, like humans, that require the gas to survive. But early in Earth’s history, oxygen levels were much lower – and they are likely to be low again in the distant future.
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Kazumi Ozaki at Toho University in Funabashi, Japan, and Chris Reinhard at the Georgia Institute of Technology in Atlanta modelled Earth’s climatic, biological and geological systems to predict how atmospheric conditions on Earth will change. ....

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