helenmariabackstrom

Anteckning 38A

"The glow was bright enough to light up layers of dust surrounding the star, like a flashlight shining through smoke in a dark room. Every time Hubble astronomers take a picture, the dust ring looks larger than before. But, in the Hubble pictures, the dust really isn't growing. Instead, light from the flash is sweeping through the dust, lighting up different parts. This illusion is called a "light echo."

Idag har jag lånat tio böcker om astronomi.