"...The sun will be brought down to about two bows length (about a mile away) which will cause mankind..."
This is a part of the End Times prophecy, when, as islam believes, the Mahdi shall return and rule the world.
I wrote a rather tongue in cheek article you might enjoy, about the Islamic Prophecy:
http://www.israelnationalnews.com/article.php3?id=3042
I'm not up to date on where the "bows" thing started. Except for the picture. Did it or some jihadi post specifically say "bows"? Or is it just from the picture?
An excellent article. Thank you.