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Stories by Caleb A. Scharf

Rise of the Machines

There may be things to learn from the one known world in the universe dominated by complex machines 

December 29, 2019 — Caleb A. Scharf | Opinion

Deep Breather

Explaining the very long steps of Earth’s oxygenation—and perhaps that of other planets, too

December 22, 2019 — Caleb A. Scharf

The First Alien

When did we start talking about life from elsewhere?

November 30, 2019 — Caleb A. Scharf

Galactic Extremism

Some scenarios for interstellar expansion are more disturbing than others

November 17, 2019 — Caleb A. Scharf

The Planets and You

Predictable transits and conjunctions belie a deeper story that includes our origins

November 10, 2019 — Caleb A. Scharf

The Spookiverse

The most haunting thing about the universe is how empty it is

October 30, 2019 — Caleb A. Scharf

Aerogel Mars

A novel idea for the local terraforming of Mars raises interesting possibilities

October 19, 2019 — Caleb A. Scharf

Uninhabitable Planets

Calling a distant world Earth-like is bad practice; calling it habitable is not much better

October 5, 2019 — Caleb A. Scharf

Forget Area 51

There are way more important planetary concerns to direct your attention to

September 28, 2019 — Caleb A. Scharf

The Atmospheric Microbiome

For single-celled organisms, Earth’s atmosphere represents transport, refuge and possibly a habitat

September 14, 2019 — Caleb A. Scharf

The Gamma-Ray Moon

A reminder that there is more going on in the universe than we ordinarily perceive

August 31, 2019 — Caleb A. Scharf
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