Col. Chris Hadfield

Apr 24

People have been living where London now shines for 6500 years or more. Currently choosing night cities for the book.

People have been living where London now shines for 6500 years or more. Currently choosing night cities for the book.

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Been having throwback fun going through the tens of thousands of photos to choose. The Outback: unselfconscious beauty.

Been having throwback fun going through the tens of thousands of photos to choose. The Outback: unselfconscious beauty.

The new book will be called You Are Here - Around the World in 92 Minutes. Dawn shadows on the Hudson, New York City.

The new book will be called You Are Here - Around the World in 92 Minutes. Dawn shadows on the Hudson, New York City.

Good morning, Earth! Announcing a new book, full of unpublished space photos, with notes and comments. Coming in October.

Good morning, Earth! Announcing a new book, full of unpublished space photos, with notes and comments. Coming in October.

Apr 23

Just flew across the centre section of springtime Canada. Still lots of ice, thick on Lake Superior.

Just flew across the centre section of springtime Canada. Still lots of ice, thick on Lake Superior.

Apr 22

Whatever I was doing here, I have made a note to never do it again when Skyping with students. Astronaut nightmare.

Whatever I was doing here, I have made a note to never do it again when Skyping with students. Astronaut nightmare.

How often do asteroids hit Earth? More than I thought: 26 times in the past dozen years, and we didn't see them coming.

It's Earth Day around our planet; good day to think about personal responsibility. Clear, factual New York Times´╗┐ editorial.

Somewhere on Earth, ice in the river, beautiful Spring morning. Do you recognize where?

Somewhere on Earth, ice in the river, beautiful Spring morning. Do you recognize where?