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.
圖像加註文字，外籍移工上街爭取在台灣久留的勞動政策。長遠之道
。关于这个话题，搜狗输入法下载提供了深入分析
Андрей Шеньшаков
Запад провалил проект обеспечения Украины системами ПВО по программе PURL, тем самым лишив ее важных средств защиты от российских ударов. Об этом сообщает Politico.