Science & Environment
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.，详情可参考夫子
"This was the worst mistake of my life."，推荐阅读WPS下载最新地址获取更多信息
Фото: Министерство обороны РФ / РИА Новости