TE
科技回声
首页24小时热榜最新最佳问答展示工作
GitHubTwitter
首页

科技回声

基于 Next.js 构建的科技新闻平台,提供全球科技新闻和讨论内容。

GitHubTwitter

首页

首页最新最佳问答展示工作

资源链接

HackerNews API原版 HackerNewsNext.js

© 2025 科技回声. 版权所有。

What happens when Betelgeuse explodes?

124 点作者 varmais大约 10 年前

13 条评论

adwn大约 10 年前
To get a feel for the tremendous size of that star: <a href="https://en.wikipedia.org/wiki/File:Star-sizes.jpg" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;File:Star-sizes.jpg</a>
评论 #9106243 未加载
评论 #9108051 未加载
评论 #9109025 未加载
评论 #9108773 未加载
评论 #9109789 未加载
d_theorist大约 10 年前
&quot;Betelgeuse is already one of the brightest stars in the night sky, sitting somewhere around the 8th or 9th brightest star in the night sky. (These lists don’t include the Sun, which is somewhat obviously always the brightest object in the sky.)&quot;<p>A good point, although it is fairly rare to see the sun in the night sky these days.
评论 #9107141 未加载
Starwatcher2001大约 10 年前
The remnents of the supernova that occurred in 1054 is known as the &quot;Crab Nebula&quot;, AKA M1 on Messier&#x27;s catalog.<p>I remember observing this from my back garden some 10 years ago with a small telescope, but that&#x27;s quite difficult now due to light polution. It&#x27;s getting hard for people to see stars in many big cities, let alone fainter objects.
评论 #9107531 未加载
astletron大约 10 年前
&quot;Nighttime will be a different story. The brightness of Betelgeuse’s supernova is about the same as the quarter moon.&quot;<p>This will last maybe a couple of weeks, but we don&#x27;t expect it for 100K years.
评论 #9106492 未加载
nsxwolf大约 10 年前
The transition of the star to nebula will also permanently alter the appearance of the constellation Orion, which is both exciting and sad.
评论 #9107372 未加载
amoruso大约 10 年前
This article reminded me of something I read a few years ago. What is it like to be really near a supernova? It&#x27;s a quick read and entertaining too.<p>Life (Briefly) Near a Supernova:<p><a href="http://www.nagt.org/files/nagt/jge/abstracts/Dutch_v53n1.pdf" rel="nofollow">http:&#x2F;&#x2F;www.nagt.org&#x2F;files&#x2F;nagt&#x2F;jge&#x2F;abstracts&#x2F;Dutch_v53n1.pdf</a>
dghf大约 10 年前
Any risk of a gamma-ray burst affecting Earth?
评论 #9106433 未加载
评论 #9107016 未加载
评论 #9110151 未加载
kijin大约 10 年前
Other than slightly brighter-than-normal nights, will there be any adverse effects on Earth?<p>The wikipedia article on near-Earth supernovae [1] suggests that Betelgeuse will be pretty safe because of its distance. But exactly how safe? What about all the delicate electronics that we&#x27;ve sent up to space? I suppose anything that can withstand a daily dose of solar radiation would probably be okay, but are there any specific wavelengths that could cause an issue?<p>[1] <a href="https://en.wikipedia.org/wiki/Near-Earth_supernova" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Near-Earth_supernova</a>
评论 #9107757 未加载
评论 #9106791 未加载
TazeTSchnitzel大约 10 年前
When I read that title, I assumed it had something to do with Douglas Adams.
评论 #9108823 未加载
shrikrishna大约 10 年前
Starts-With-A-Bang is a must-follow blog collection for anyone mildly interested in Physics. They&#x27;re all frequent, up to date, and most importantly, accurate.
mkramlich大约 10 年前
semi-related: Betty From Betelgeuse is the name of one of the main characters in my book series The Dread Space Pirate Richard.<p>I chose Betelgeuse partly as a nod to HHGG and partly for the way it read and sounded when pronounced aloud. I think of all the star names it is possibly the most beautiful and memorable.
robinhoodexe大约 10 年前
I&#x27;m pretty sure Ford Prefect would be rather disappointed that his home planet got blown up...
评论 #9107561 未加载
cgtyoder大约 10 年前
<i>All that said, Betelgeuse isn’t expected to explode for another 100,000 years or so.</i><p>Total click bait title.