VOA慢速英语:科学家在宇宙碰撞中获取丰富的信息

neutron star – n. a very dense object in space that consists of closely packed neutrons and is produced by the collapse of a much larger star

gamma ray – n. a ray that is like an X-ray but of higher energy and that is given off especially by a radioactive substance

gravitational wave – n. a very small ripple or movements through space time in the universe.

spiral – n. a circular curving line that goes around a central point while getting closer to or farther away from it

watch – n. a device that shows what time it is and that you wear on your wrist or carry in a pocket

leap – v. to jump from a surface