Dov Achterberg

@dov

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Teaches high school physics in Ansel. Backyard astronomer. Owner of one very patient telescope.

15 followers · 3 stories · Joined April 16, 2025

How to See the Andromeda Galaxy From a Parking Lot

All you need is cheap binoculars, a lawn chair, and a dumpster to stand behind.

Oct 23 · 4 min read3904

The Classroom Demo That Failed in Front of Everyone

I missed a stuffed monkey three times in front of 640 students, and it was the best lab I ever taught.

Sep 22 · 4 min read2445

The Dark Between the Stars Is Evidence

Why the night sky is black took about three hundred years to answer, and the answer is a clock.

Aug 28 · 4 min read3105