当地时间3月4日，白宫新闻秘书卡罗琳·莱维特在记者会上表示，上周末启动的“史诗怒火”行动主要目标包括：摧毁伊朗弹道导弹及其生产体系、打击伊朗海军力量、削弱伊朗在中东地区的代理武装，以及确保伊朗无法获得核武器。
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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