March 7, 2014

View of South America and portions of North America and Africa from the Mercury Dual Imaging System’s wide-angle camera aboard MESSENGER (Mercury Surface, Space Environment, Geochemistry, and Ranging). (Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington)

1 View of South America and portions of North America and Africa from the Mercury Dual Imaging System’s wide-angle camera aboard MESSENGER (Mercury Surface, Space Environment, Geochemistry, and Ranging). (Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington)

Magnetic loops carry gas and dust above disks of planet-forming material circling stars, as shown in this artist's conception. These loops give off extra heat, which NASA's Spitzer Space Telescope detects as infrared light.

2 Magnetic loops carry gas and dust above disks of planet-forming material circling stars, as shown in this artist's conception. These loops give off extra heat, which NASA's Spitzer Space Telescope detects as infrared light.

An Indian Muslim girl performs martial arts during a function to mark International Women’s Day at a school in Hyderabad. International Women's Day will be marked on March 8.

3 An Indian Muslim girl performs martial arts during a function to mark International Women’s Day at a school in Hyderabad. International Women's Day will be marked on March 8.

Debris cover a street and flames rise from a building following a reported air strike by Syrian government forces during the Friday prayer in the Sukkari neighborhood of the northern city of Aleppo.

4 Debris cover a street and flames rise from a building following a reported air strike by Syrian government forces during the Friday prayer in the Sukkari neighborhood of the northern city of Aleppo.

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March 7, 2014