What Force Could Bruise a Galaxy? And Other Puzzles

Hubble sends earth the equivalent of an encyclopedia worth of data every day, giving scientists new insight into the life cycles of stars and galaxies. NASA officials canceled Hubble's last service mission in January, giving the telescope a death sentence that some legislators are trying to appeal. What follows are photos of some unusual lights Hubble has captured through its lens. You can use them to test your knowledge of Hubble and the stars.

Hubble captured this image in 2000. What is the bright streak in the picture?

Image courtesy NASA and The Hubble Heritage Team (STScI/AURA)