Phil Plait

Phil Plait


SCIENCE! I love this stuff. My Bad Astronomy blog: https://t.co/7kkmlXW1jN I use "likes" for bookmarks. No endorsement implied.

615607 followers  •  602 follow  •    •   https://t.co/FZ6zYdPTeQ

3/ A paper came out a few years ago putting Betelgeuse going supernova in about 100,000 years. So it’s unlikely to be ready to go off now.

5/ The amount the day changes and the times of sunrise/set depend on latitude (and your local horizon). You can check that here: Don’t forget to put in your own location; that’s for Boulder.

2/ It has several cycles all going on at the same time in its atmosphere, and (I’m guessing) it’s possible they just are all kinda hitting their low. I strongly doubt this has anything to do with it getting ready to explode, though.

6/ But the outer layers are so big the density is incredibly low. It doesn’t really have a surface per se. It just kinda gets more tenuous as you move away from the center. The atmosphere is prone to all sorts of changes, which is why the brightness changes.

7/ It’s been known for centuries to be variable by some amount. So this change is interesting, not alarming.

8/ At 650 light years away it’s too far to hurt us even if it does go supernova. It’ll get as bright as the full Moon though! That’ll be cool (though irritating for astronomers who want to observe other objects).

Loading
Loading

This is real: 11 Oregon GOP senators have fled, and one is threatening to kill police officers, because *they don’t want to vote on a carbon tax*. This is what science denial and fossil fuel graft have brought us to. This is what we must fight if we want to save our future.

No human on the planet has lived through a hotter July. Ever.

tweet picture

Roses are red, But that's not quite true, They absorb every wavelength of the visible portion of the electromagnetic spectrum, *Except* for that hue.

This is so very cool: Astronomers have confirmed that Europa blasts out geysers of water, sourced from the ocean deep beneath its surface!

Need a total perspective shakeup? That’s the far side of the Moon and the Earth seen *in a single shot* by a Chinese lunar satellite. Yeah.

tweet picture

A lovely family portrait, created by @bhgross144 .

tweet picture

Loading
Loading