Beyond the cloud's unusual shape, scientists see the nebula as a freeze-frame in the life of a star facing its final act. Elderly stars shed their outer layers in bursts, creating shells of gas and dust that expand. By observing the nebula at different wavelengths, researchers can sort out what material was molted first, how fast the star is losing mass, and which phase of decline Webb has caught.
Фото: Alex Brandon / Reuters
，详情可参考WPS下载最新地址
643 0 3 SHIFT DLY IN+D ; SIGMA = 3
Some methods men discuss online to looksmax include going to the gym and "mewing," or sticking one's tongue on the roof of his mouth to give the appearance of a sharper jawline. But men have gone to drastic lengths to looksmax. This includes surgery (jaw surgery, leg-lengthening surgery), bonesmashing (using objects like hammers to literally try to "chisel" their face), and taking drugs such as steroids, hormones, or even illegal substances.