burst – n. a short period of producing or doing something that begins suddenly

emission – n. the act of producing or sending out something (such as energy or gas) from a source

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

speculation – n. ideas or guesses about something that is not known

dwarf – adj. smaller than normal size

assumption – n. something that is believed to be true or probably true but that is not known to be true

detect – v. to discover or notice the presence of (something that is hidden or hard to see, hear, taste, etc.)


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