Gaia21bty's BrightnessGaia21bty's BrightnessMysteryunpredictably.A young star's brightness fluctuatesSolar and Stellar AstrophysicsThe Brightness Surge of Gaia21btyAstronomers observe unusual brightness changes in young star Gaia21bty.2025-10-11T14:33:27+00:00 ― 5 min read