With major eclipses, brilliant supermoons, and lineups of five or more planets, 2026 offers something awe-inspiring in every season. Here’s what to watch for. Solar prominences and their associated ...

MIT professor Joseph Weizenbaum developed Eliza in the mid-1960s. His views on artificial intelligence were often at odds with many of his fellow pioneers in the field. Illustration by Meilan Solly / ...

Learn how to implement a classic substitution cipher in C! This step-by-step tutorial walks you through encoding and decoding messages by replacing each letter with another according to a fixed key. A ...

The last total solar eclipse happened on April 8, 2024, covering areas of Mexico, the U.S. and Canada. Since then, the world has been treated to two partial solar eclipses, one March 29, 2025, and the ...