1·Supernovas in the Milky Way are the likeliest source for most of the cosmic rays reaching Earth.
银河系中的超新星最有可能是大多数宇宙射线到达地球的来源。
2·Supernovas can briefly shine as brightly as an entire galaxy.
超新星能短暂地发出相当于整个星系亮度的光。
3·Pulsars and supernovas seem to take over at about 9:00 and are truly spectacular.
脉冲星和超新星似乎在大约900的位置上，而且确实相当壮观。
4·Supernovas can be very bright for a short time and usually release huge amounts of energy.
超级新星在一段短时间内会非常明亮，而且常常放出巨大能量。
5·Supernovas are a class of violently exploding stars that become super bright after eruption.
超新星是一类剧烈爆炸的恒星，爆发之后它变得极为明亮。
6·Historically, only seven supernovas were known to have been recorded before the 17th century.
历史上，在17世纪之前只有7个超新星爆炸事件被记录下来了。
7·Her eyes shine softly with a silvery light but can also burst in a blinding flash like supernovas.
她的眼睛闪耀着柔和的银色光芒，但是也能瞬间放射出新星一般的强光。
8·Shadow-casting Supernova Supernovas are exploding stars that often briefly outshine entire galaxies.
超新星是那种爆发时常简短地使整个银河都为之失色的星。
9·A collection of Hubble Space Telescope images shows distant supernovas, the death explosions of massive stars.
这是一组哈勃望远镜拍摄下来的，遥远的超新星以及这些巨大的星体发生死亡爆炸的景象。
10·Maybe supernovas were different in the past, for example, which made it look like the universe was accelerating.
比如说，也许超新星在过去是不同的，这使得宇宙看起来是加速的。