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.
这价格看着挺唬人，其实就是2021年招商局和维京游轮买入时的成本价，约合4亿美元。
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All the models featured in our instant camera buying guide are enjoyable to use, but each offers a distinct set of features at a different price point. As a result, some are more appropriate for a child or budding photographer, while others are more advanced and provide added creative control (for a price). When it comes down to it, though, we consider print quality, ease of use, and affordability to be the hallmarks of a quality shooter. That’s why we picked Fujifilm’s Instax Mini 12 as the best instant camera for most people, as it ticks all three boxes wonderfully.