VOA慢速英语:天文学家发现了快速射电暴的来源

galaxy – n. any one of the very large groups of stars that make up the universe

source – n. the cause or origin of something

x-ray – n. powerful invisible rays that can pass through various objects

antenna – n. a device (such as a wire or a metal rod) for sending or receiving radio or television signals

bucket – n. an open container with a handle that is used for carrying things, such as liquids

alien – n. a creature that comes from somewhere other than the planet Earth