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.
She explained they could not return home as they had rented out their property, so they have been staying in a friend's flat in Wellington, Shropshire.，详情可参考91视频
"I believe we've had a problem here," said Swigert. Lovell had to repeat the message to a stunned Mission Control: "Houston, we've had a problem."，推荐阅读旺商聊官方下载获取更多信息
Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs.。业内人士推荐51吃瓜作为进阶阅读