01/06/2012 at 5:09 pm

This was a great week for images. What an amazing world we live in

01/07/2012 at 12:21 pm

I hate you, PopSci. How does a star rotate at 1 million "miles per hour?"

Also, centrifugal force? Really?

01/08/2012 at 5:58 pm

@tyronemojojohnson:
Both those statements are pretty much straight from the source (go read the linked NASA page). The way it rotates at "miles per hour" is that you mark a spot on the surface and then measure the length of time that spot takes to make one rotation. Knowing the diameter of the star and time to make a trip around the diameter, you can calculate a linear speed in terms of whatever units you want (i.e., miles per hour).

01/08/2012 at 8:19 pm

what is that layer of green in the atmosphere?

to NekoMouser: don't you mean mean circumference, even though you can calculate circumference from diameter. sorry, wouldn't think tryo would be capable to think of that.

@ tyronemojojohnson: centrifugal force? you don't believe in it? how can you not believe in inertia? why does it take more energy for a vehicle to change direction while maintaining speed than to maintain speed going straight? a force called inertia, it wants to keep the car going in the direction in which you were going, while you are trying to make it go in a new direction. hopefully you understand now. maybe you should try wikipediaing centrifugal force.

01/09/2012 at 12:26 am

what is that layer of green in the atmosphere?

+1

01/09/2012 at 12:45 am

In the description of the LED lamp, PopSci mis-quoted the numbers in the Gizmodo article. It takes 10 apples to power EACH LED of the 30 LED lamp. So 300 apples total.