ArrowTwo enormous filaments floating above the sun's surface come to a head, creating an "arrow" pointing to the right. If these dark-colored lines of cooler material were straightened out, each would be a million miles long.
Photograph by NASA/SDO

Week's Best Space Pictures: See An Arrow on the Sun

Pluto's moon Nix wobbles in a chaotic spin and filaments floating across the sun head to the right.

ByJane J. Lee
Photo gallery byEmily Jan
June 5, 2015

Feed your need for "heavenly" views of the universe every Friday with our picks of the most awe-inspiring space pictures. This week, a new braking system for Martian spacecraft is put through its paces and fluffy white clouds dot green fields in Texas.

National Geographic History Magazine

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