Earth’s oxygen has varied dramatically over time – here’s how our data could help us spot alien life

Are we alone in the universe? This is a question that has intrigued humans for centuries and inspired countless studies and works of fiction. But are we getting closer to finding this out? Now that the James Webb Space Telescope (JWST) is in operation, we might have taken one giant leap in being able to answer this one day.

Earth’s oxygen has varied dramatically over time – here’s how our data could help us spot alien life