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.
After nine months in space, Nasa astronauts Butch Wilmore and Suni Williams have finally arrived back on Earth.
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«Если начнется война, мы, конечно, будем готовы ко всему, что может обеспечить выживание Швеции и безопасность шведов», — сказал он.