英语听力精选进阶版 13911（在线收听）

Scientists discover earth-like planet

Vocabulary

dwarf star

type of star similar to our sun

light-years

units for measuring long distances in space (how far light travels in a year)

constellation

group of stars that form a shape in the sky

on paper

in theory

mass

size or weight

rocky surface

ground covered in rocks

shirt-sleeve weather

warm weather where a sweater or coat is not needed

hunting

searching

detected

discovered or noticed

tell-tale signs

obvious clues