事实上，黑洞也是托福听力经常出现的内容。下面新东方网托福频道就和大家分享有关黑洞(black holes)的英文介绍和常用词。

　　Astronomers think the object shown in this Chandra X-ray Observatory image (in box) may be an elusive intermediate-mass black hole. Located about 32 million light-years from Earth in the Messier 74 galaxy (M74), this object emits periodic bursts of x-rays at a rate that suggests it is much larger than a stellar-mass black hole but significantly smaller than the supermassive black holes found at the centers of galaxies. Few such middling black holes have been discovered, and scientists aren't sure how they form.

　　Black holes are the cold remnants of former stars, so dense that no matter—not even light—is able to escape their powerful gravitational pull.

　　While most stars end up as white dwarfs or neutron stars, black holes are the last evolutionary stage in the lifetimes of enormous stars that had been at least 10 or 15 times as massive as our own sun.

　　When giant stars reach the final stages of their lives they often detonate in cataclysms known as supernovae. Such an explosion scatters most of a star into the void of space but leaves behind a large "cold" remnant on which fusion no longer takes place.

　　相关英文词汇

　　黑洞 black holes

　　光年 light-year

　　中等质量 intermediate-mass

　　恒星质量 stellar-mass

　　特大质量的 supermassive

　　星系 galaxy

　　银河系 the Milky Way

　　残余，残留物 remnants

　　稠密的，浓厚的 dense

　　重力的，引力的 gravitational