[It may take a minute to load, it's a big file.]
Wow! You can see the Sun's rotation over the four hour interval these pictures were taken, and then the Moon flashes by. The Moon is dark because it's between us and the Sun, so were seeing the unlit side (I have a diagram showing an approximation of the geometry of this event on my other page about it).
Moreover, scientists can use images of the sharp-edged Moon against the Sun's disk to check on the optics of the observatory. That information can be used to sharpen the images even more. So this is fantastic, fantastically beautiful, and fantastically useful, too.
Tip o' the sunglasses to NASAGoddard.
TODAY IN SLATE
Don’t Worry, Obama Isn’t Sending U.S. Troops to Fight ISIS
But the next president might.
IOS 8 Comes Out Today. Do Not Put It on Your iPhone 4S.
Why Greenland’s “Dark Snow” Should Worry You
How Much Should You Loathe NFL Commissioner Roger Goodell?
Here are the facts.
Amazon Is Launching a Serious Run at Apple and Samsung
Slim Pickings at the Network TV Bazaar
Three talented actresses in three terrible shows.
More Than Scottish Pride
Scotland’s referendum isn’t about nationalism. It’s about a system that failed, and a new generation looking to take a chance on itself.