51吃瓜

When stars are still very young (only a few million years old), their circumstellar disks are relatively huge, often with about 1 to 10 percent of the mass of the central star in a typical system. For a star like the sun, that amounts to a disk with roughly 100 times the mass of Jupiter.

In the circumstellar shells, which are shells of gas now surrounding the star, you can have dust particles form because the temperature and density are perfect for making dust. This dust then gets kicked back out into the interstellar medium along with gas and that is what the next generation of stars will form from.

Fashion Week in New York started on Thursday with designer runways shrouded in gray …. Occasional breaks in the overcast tones on the catwalks brought flashes of burgundy and teal, although the go-to color of the day was purple. Violescent dresses, skirts and shirts were paired with black-and-white coordinating pieces by Richard Chai Love. The designer cut lavender damask into dresses, coats and suits. Nicholas K, meanwhile, showed a handful of smoky mauve fashions, including a luscious knitted wrap and a luminescent jacket.

The sudden alternations of warm light and cold shade made him shiver. In front of the Palazzo di Venezia, and in front of the Gesu, it had seemed to him as if all the night of ancient times were falling icily upon his shoulders; but at each fresh square, each broadening of the new thoroughfares, there came a return to light, to the pleasant warmth and gaiety of life. The yellow sunflashes, in falling from the house fronts, sharply outlined the violescent shadows. Strips of sky, very blue and very benign, could be perceived between the roofs.

While they were not-so-friendly rivals, in certain ways Janet [Jackson] and Madonna helped trailblaze similar terrain. Both were strong, intelligent, fiercely ambitious artists. Neither expressed any reticence about their desire for mass commercial success. Both were engaged in similar struggles for respect, empowerment and agency in an industry dominated by men and male expectations. Both also faced serious pushback from music critics.

The forest was in the middle stages of rebirth. Parts of it had been consumed by a blaze in the eighties, and adolescent trees stood calf-like among the charred carcasses of their forefathers. That鈥檚 the machine of the world, how past meshes with future: dig deep enough or wait long enough and you鈥檒l find the bones of a dead thing. Kids consume the legacies of their parents. People found cities over unmarked graves. Civilizations rise up from the ruins of those that trailblazed before them. Whole histories are built on the leftovers of older worlds.