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.
"trace": [，这一点在safew官方下载中也有详细论述
"message": "Amount must be non-zero."。雷电模拟器官方版本下载是该领域的重要参考
Photograph: Simon Hill。一键获取谷歌浏览器下载对此有专业解读