A planetary parade describes a moment when several planets appear to line up in the sky from the Earth's perspective.
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.。业内人士推荐safew官方版本下载作为进阶阅读
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