Time lapse: Helvetia’s Dream | Bad Astronomy

Oh my, another lovely night sky (and landscape!) time lapse video; this time from Alessandro Della Bella, and called Helvetias Dream: [Make sure you set it to hi-def and make it full screen.] I love the opening shot! Unless it was just digitally zoomed, it must have taken some planning; you have to know just where the Moon is going to rise to catch it that accurately. A couple of other things to watch for, too: At about 45 seconds in, a bright meteor leaves a long persistent train, a glowing trail that gets blown away by the thin but rapid winds 100 kilometers above the Earths surface. I actually gasped when I saw that! At 1:30 you see the stars of Orion setting behind the Matterhorn, zoomed in Continue reading

Cannonball star blasts away from the scene of the crime | Bad Astronomy

When I picture an exploding star in my head which I do unsurprisingly often the imaginary mental detonation I picture is symmetric. That is, it expands like a sphere, getting bigger in all directions equally Continue reading