Tom Metcalfe

The Rubin observatory will allow scientists to see how the cosmos has evolved over time.

For a clear path, follow the birds.

15 human space oddities.

A superhero plant that could thrive on the Red Planet.

A new symphony turns the science of the Red Planet into art.

An accident of lighting uncovers Jewish, European, and Islamic origins.

Is gravity weaker over distances of billions of light-years?

Bright ideas from astronomy’s biggest stars haven’t always worked out.

A controversial theory can explain phenomena attributed to the mystery planet.

By imitating early conditions of Earth in the lab, scientists gain new insight into the origin of life.