I got this in an email today. I'd list the photo credits if I had them. The email said the photos came from JPL, but I don't know if that's true. Snopes didn't have any hits on the searches I tried. So here are the photos:
Sirius, by the way (white star in the fourth picture), is that bright star in the sky at the shoulder of Orion's dog, Ursa Major.
And all the ruckus in the news right now is happening on a little dot on the left side of the earth in the top picture.