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Mathematics

An ultra-black coating for satellites could stop them spoiling astronomy pictures

The Conversation | 24 Jul 2025

Every night, as telescopes around the world open their domes to study the cosmos, astronomers are forced to contend with an unexpected form of pollution: bright white streaks slicing across their images. These luminous trails are caused by satellites. Specifically, the growing number of “megaconstellations” launched into low...

66th International Mathematical Olympiad (IMO), by Hua Bin

The Unz Review | 24 Jul 2025

The above top global math competition was held in July in Australia. Since 1985 when China participated in the event for the first time, the Chinese team has won...