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‘Extraordinary claims require extraordinary evidence’ − an astronomer explains how much evidence scientists need to claim discoveries like extraterrestrial life

An astronomer breaks down 3 key components that allow researchers to make groundbreaking discoveries – and decide when results aren’t significant.

Chris Impey

The jury’s out on whether the US is still at the top of global science. Proposed cuts to major agencies could mean completely ceding that title.

100 years ago, a young Edwin Hubble settled astronomy’s "Great Debate"

Hubble’s work pushed the field of astronomy forward, starting with his paper demonstrating that some objects exist outside our galaxy.

We have only one example of biology forming in the universe – life on Earth. But what if life can form in other ways? How do you look for alien...