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Nautilus

Caleb Scharf is an astrobiologist, author, and recipient of the 2022 Carl Sagan Medal. His latest book is The Giant Leap: Why Space is the Next Frontier in the Evolution of Life.

Caleb Scharf

Astronomy

Life on Earth Is a Sketchy Guide to an Alien Civilization

Ramin Skibba

The Young Milky Way Collided With a Dwarf Galaxy

Sean Raymond is an American astrophysicist working at the <a href="https://astrophy.u-bordeaux.fr/?lang=en">Bordeaux Astrophysical Laboratory</a> in France. He also writes a blog at the interface of science and fiction (<a href="https://planetplanet.net/">planetplanet.net</a>) and published a <a href="https://www.amazon.com/dp/B08LFZZWGZ">book of astronomy poems</a>.

milky way

Life on Earth Is a Sketchy Guide to an Alien Civilization

The Young Milky Way Collided With a Dwarf Galaxy

I Built a Stable Planetary System with 416 Planets in the Habitable Zone

How to Map a Galaxy When You’re Right in the Middle of It

Seeing the Galactic Forest for the Trees