NASA’s Oct. 29 Astronomy Picture of the Day explains how Venus’s backlit atmosphere creates a crescent arc whose tips are called horns.
APOD: 29 October 2026 – The Horns Of Venus
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2026 October 26 – M42: The Great Nebula In Orion
NASA’s Oct. 26 Astronomy Picture of the Day highlights M42, a nearby star-forming region about 1,500 light-years from Earth.
Your Book Review: The Ghost In My Brain
An anonymous finalist in Astral Codex Ten’s 2026 review contest examines Clark Elliott’s decade-long struggle after a severe concussion.
Faster To Science: A Letter To The Science Community
NASA says its Competition Model 2.0 will streamline science mission reviews, with projected selection timelines shortened by up to 45%.
Open Thread 456
Astral Codex Ten’s Open Thread 456 lists meetup updates, a Boston election guide, an AI-grantmaking survey and new AI prediction market MNX.
APOD: 2026 October 15 – The Milky Way Over Manhattan
NASA’s October 15 Astronomy Picture of the Day features a Milky Way image captured over Manhattan using a near-infrared filter.
APOD: 2026 October 11 – Ice Fishing For Cosmic Neutrinos
NASA’s October 11 APOD explains IceCube’s South Pole detector and notes a Nobel Prize announcement involving a founding collaboration leader.
Terence Tao: Math 2.0 [Pdf]
![Terence Tao: Math 2.0 [Pdf]](https://varietychem.com/wp-content/uploads/2026/10/terence-tao-math-2-0-pdf-featured.jpg)
Search interest is rising around Terence Tao’s “Math 2.0” PDF, but the reason for the spike and the document’s contents are unconfirmed.
Your Book Review: We Present Television
A finalist in Astral Codex Ten’s 2026 book review contest examines a 1940 collection about early television and its technical and cultural ambitions.
October 2026 Satellite Puzzler
NASA Earth Observatory published its October satellite-image challenge on Oct. 6, inviting readers to identify the location before a planned reveal.
