【科学60秒】宇宙也自导自演“暑期档大片”_英语听力练习mp3下载-科学-沪江听力酷

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【科学60秒】宇宙也自导自演“暑期档大片”

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It's a ____1____ worthy of an action film - galaxies, violently torn apart, smashing into one another, leaving remnants of themselves behind billions of years later. That's the scene that ____2____ some of the oldest stars in our own Milky Way galaxy, according to work published in the journal Monthly Notices of the Royal Astronomical Society.
Researchers ran a huge computer simulation of the evolution of the universe starting shortly after the big bang, more than 13 billion years ago. It's the most detailed model ever produced, and allowed a close examination of the make-up of the Milky Way's stellar halo. The stellar halo is ____3____ that surrounds our familiar white swirl of stars. The halo is much larger and much older than the Milky Way itself.
And the simulations show that the ancient stars in the halo were formed from young, small galaxies that ____4____ and left behind fragments of themselves, ____5____ those stars actually being born in the Milky Way when it started forming 10 billion years ago. The researchers say the scene ____6____ the dramatic - and violent - clashes that were taking place long, long ago, in a galaxy not very far away.