Scott Johnston

Scott Johnston is a science communicator and author with a PhD in the history of science. He is the author of an academic book, “The Clocks are Telling Lies,” that explores the history of global timekeeping, and is a senior science writer at Perimeter Institute for Theoretical Physics.

Recent Articles

The life-giving secret of protoplanetary disks? Dust.

December 01, 2025

The complex molecules required for life on Earth might never have formed if it wasn’t for cosmic dust.
The Oldest Stars are Planet Killers

November 11, 2025

As stars age, they expand. That’s bad news for planets orbiting close to their stars, according to a new study published in the Monthly Notices of the Royal Astronomical Society this month. The study suggests that planets closest to their stars, especially those that orbit their stars in just 12 days or less, are at a higher risk of being sent to their doom by their aging suns.

Scott Johnston

Recent Articles

The life-giving secret of protoplanetary disks? Dust.

The Oldest Stars are Planet Killers