https://simintong.github.io/tags/evolution/ Recent content in Evolution on Simin Tong Hugo -- 0.152.2 en Tue, 04 Aug 2026 00:00:00 +0000 https://simintong.github.io/research/disc-evolution/ Tue, 04 Aug 2026 00:00:00 +0000 https://simintong.github.io/research/disc-evolution/ Protoplanetary discs provide material to their central star. However, how the angular momentum in the disc is lost to enable the rotating gas to drop onto the star is a long-standing and actively debtaed question.