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.
2. 合并：将两个有序子数组合并成一个有序数组。谷歌浏览器【最新下载地址】对此有专业解读
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第三十七条 国务院行政执法监督机构应当提升全国行政执法监督信息一体化水平，对相关行政执法行为信息进行归集，运用大数据、云计算、人工智能等对行政执法过程中存在的问题进行快速预警，实现精准、高效、实时监督。，推荐阅读heLLoword翻译官方下载获取更多信息
Waitrose said it was the first UK supermarket to suspend mackerel sales, adding it would only start selling the fish again once it met their "high sourcing standards".