Perseverance detected chromium-bearing corundum on Mars, a ruby-related mineral that may help researchers investigate ancient impact heating.
Rubies On Mars?
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Science
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APOD: 2026 November 9 – Rigel And The Witch Head Nebula
NASA’s Nov. 9, 2026 Astronomy Picture of the Day explains how Rigel illuminates and shapes the Witch Head Nebula.
NASA Announces $1 Million To Students For Moon Base Challenge
NASA has opened a $1 million student competition for U.S. high school and post-secondary teams to develop concepts for a future lunar base.
Kirlian Photography: Building Your Own Equipment
An Imagesco guide describes a battery-powered Kirlian photography device and explains how corona images form, while cautioning against paranormal claims.
Links For November 2026
Astral Codex Ten’s November links mix forecasts on AI and California floods with essays, community news and an acquisition anecdote.
Insects Don’t Swarm At LED Lights
A 2016 field study found fewer insects at LED lamps than at incandescent and compact fluorescent lights, though the reasons and effects vary.
Open Thread 458
Astral Codex Ten’s Open Thread 458 shares voting-guide links, a FutureSearch hiring notice, a London protest, a Manila meetup and a reader costume.
Your Book Review: The History And Adventures Of An Atom
An Astral Codex Ten contest review examines Tobias Smollett’s 1769 novel and the literary traditions behind its unusual form.
Links For October 2026
Astral Codex Ten’s October roundup links to AI forecasting, translation and art, while flagging disputed claims and errors in other articles.
Halloween Aboard The International Space Station
NASA revisits Halloween costumes worn by International Space Station crews and explains how astronauts mark the holiday in orbit.
