As big as a tennis court and as tall as a four-story building, a full-scale model of the James Webb Space Telescope model was on display from March 8-10 at the South by Southwest Interactive Festival in Austin, Texas, USA. NASA's James Webb Space Telescope is the successor to Hubble and the largest space telescope to ever be built.
Day in Photos, March 12, 2013

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As big as a tennis court and as tall as a four-story building, a full-scale model of the James Webb Space Telescope model was on display from March 8-10 at the South by Southwest Interactive Festival in Austin, Texas, USA. NASA's James Webb Space Telescope is the successor to Hubble and the largest space telescope to ever be built. (NASA/Chris Gunn)

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A homeless woman, her feet wrapped in plastic, walks in the snow in Paris as winter weather with snow and freezing temperatures returns to northern France.

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Radio telescope antennas of the ALMA (Atacama Large Millimeter/submillimeter Array) project, in the Atacama desert, some 1500 km north of Santiago, Chile. The ALMA, an international partnership project of Europe, North America and East Asia with the cooperation of Chile, is presently the largest astronomical project in the world.

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Cardinals attend a Mass for the election of a new pope celebrated by Cardinal Angelo Sodano inside St. Peter's Basilica, at the Vatican.