Nov 22, 2011

Betelgeuse- The Star that might Explode Tomorrow

I'm not really good at constellations, and one of the few I can distinguish is Orion. One of the stars forming Orion is very famous.

That star is Betelgeuse, the one in the upper left of the constellation. It is the only star that can be seen as a "disk"as opposed to the other stars that can only be seen as a"dot"even with the best telescope.
Though it's far away at 640 light years from Earth, it's huge- 1000 times the diameter of the Sun.
The reason it's so big is that it's in the final stage of a star's life cycle. This is" red giant"is very close to its fiery end, a supernova explosion.

But still, we won't know if it will explode tomorrow or 1000 years later.
If it did, it'd be instantly recognizable to us. It will become the brightest star, and we'll be able to see it even during daytime when the sun's up.

Well let's hope we won't be gone before Betelgeuse does.

Why it was Brighter Outside at 9 PM than in 5 in Tokyo

Last Saturday, I went to a prep school in Shinjuku after school (yes, schools on Saturdays sucks). Class started at 5:30, and it was already very dark outside. It finished at around 9 pm, but when I got outside I felt a little disoriented.

Then I realized what was doing that to me.
Does this look like a photo taken at 9 PM? It really is. (sorry about the quality of the image)
The sky was a lot brighter than it was 4 hours ago!! I was confused and considered all possible suspects; from the" the beginning of the end of the world" to a supernova explosion of Betelgeuse.(well, it's not unthinkable)

(Of course, obviously it's very bright at night in Shinjuku. That was probably the reason, but that's not so interesting as the ones I listed, isn't it?)
So I got home, and something made me look to Shinjuku from my house(on the 8th floor).