<p>Two enormous <a href="http://scied.ucar.edu/solar-filament">filaments</a> 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.</p>

Arrow

Two 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.

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.

Read This Next

Can science help personalize your diet?
Hogs are running wild in the U.S.—and spreading disease
Salman Rushdie on the timeless beauty of the Taj Mahal

Go Further

Subscriber Exclusive Content

Why are people so dang obsessed with Mars?

How viruses shape our world

The era of greyhound racing in the U.S. is coming to an end

See how people have imagined life on Mars through history

See how NASA’s new Mars rover will explore the red planet

Why are people so dang obsessed with Mars?

How viruses shape our world

The era of greyhound racing in the U.S. is coming to an end

See how people have imagined life on Mars through history

See how NASA’s new Mars rover will explore the red planet

Why are people so dang obsessed with Mars?

How viruses shape our world

The era of greyhound racing in the U.S. is coming to an end

See how people have imagined life on Mars through history

See how NASA’s new Mars rover will explore the red planet