April 19, 2013

A law enforcement bomb technician walks away after preparing the controlled detonation of a suspicious object during a search for a suspect in the Boston Marathon bombing, in Watertown, Massachusetts.

1 A law enforcement bomb technician walks away after preparing the controlled detonation of a suspicious object during a search for a suspect in the Boston Marathon bombing, in Watertown, Massachusetts.

Lower house president Laura Boldrini (R) checks the t-shirt of PDL (People of Freedom party) member Alessandra Mussolini (C) during the second day of the presidential election in the lower house of the parliament in Rome, Italy.

2 Lower house president Laura Boldrini (R) checks the t-shirt of PDL (People of Freedom party) member Alessandra Mussolini (C) during the second day of the presidential election in the lower house of the parliament in Rome, Italy.

A man places a bunch of flowers at the Monument to the Ghetto Heroes after a ceremony commemorating the 70th anniversary of the Warsaw Ghetto Uprising in Warsaw, Poland.

3 A man places a bunch of flowers at the Monument to the Ghetto Heroes after a ceremony commemorating the 70th anniversary of the Warsaw Ghetto Uprising in Warsaw, Poland.

Astronomers have used NASA's Hubble Space Telescope to photograph the iconic Horsehead Nebula in a new, infrared light to mark the 23rd anniversary of the famous observatory's launch aboard the space shuttle Discovery on Apr. 24, 1990. (NASA/ESA/Hubble Heritage Team)

4 Astronomers have used NASA's Hubble Space Telescope to photograph the iconic Horsehead Nebula in a new, infrared light to mark the 23rd anniversary of the famous observatory's launch aboard the space shuttle Discovery on Apr. 24, 1990. (NASA/ESA/Hubble Heritage Team)

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April 19, 2013