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Stories by Caleb A. Scharf

Magnetic Planets

Silicate dynamos could drive magnetic fields in more planets—and younger ones

March 22, 2020 — Caleb A. Scharf

Happy Universe

Distract yourself with some amazing views of the universe around us

March 15, 2020 — Caleb A. Scharf

The 1,000 Caves of Mars

Want to seek shelter on Mars? There may be a lot of options, and we know where they are

March 14, 2020 — Caleb A. Scharf

Quantum SETI

Vast data sets and machine learning could link SETI to quantum computing

February 22, 2020 — Caleb A. Scharf

Death on Mars

The martian radiation environment is a problem for human explorers that cannot be overstated

January 25, 2020 — Caleb A. Scharf

Is Biology Best?

Are there hints that machine life simply doesn’t happen in the universe?

January 11, 2020 — 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
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