A bystander throws a tear gas canister back at the al-Azhar University campus. The canister was originally shot by the Egyptian security forces towards protesters at the school in Cairo.
The fifth brightest galaxy in the sky Centaurus A, is shown in this handout photo provided by NASA May 1, 2014. Centaurus A is an active galaxy about 12 million light years from Earth and is part of a "quartet of galaxies" collaboration of professional and amateur astronomers that combines optical data from amateur telescopes with data from the archives of NASA missions.
A soldier and a paramilitary officer help to move part of a damaged car at the scene of a car bomb attack in Nyanya, Abuja, Nigeria.
Civilians find cover from the rain under a Ukrainian army armored personnel carrier at a checkpoint near the town of Slaviansk.