As streams of material spiral from the disk onto the star, its mass increases and it brightens and heats up dramatically.
由于物质流盘旋地离开此盘落入恒星，恒星的质量增大并且急剧地变亮、变热。
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Infrared images from the Spitzer Space Telescope (yellow, red, and green) expose a surrounding shell of dust and gas that's being lit up as the material streams through a nearby star cluster.