It's not yet clear why researchers decided to point Webb in its direction, but little is known about the nebula, including the mass of the star creating it. That matters because a more massive star could eventually explode as a supernova, while a smaller, sun-like star would keep shrugging off layers of material until only a dense core remains and cools over time.
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清晨7点，潮白河大桥上车流不息。家住河北省廊坊市大厂回族自治县、在北京市上班的李彤晖驶上厂通路，约40分钟后抵达单位。“以前上班得绕行武兴路或走京哈高速，不仅远，交通高峰期还特别堵。”李彤晖说，自从厂通路通车后，通勤时间缩短了近半小时。
ISS astronauts begin journey back to Earth in Nasa’s first ever medical evacuation