Wednesday, March 30, 2011: The star Alpha Camelopardalis (center) speeds through the universe at somewhere between 1.5 and 9.4 million miles per hour (680 and 4,200 kilometers per second). Considered a runaway star by astronomers, it creates a bow shock, seen as the red swath in the image.
Ultra Vivid Scene
Thursday, March 31, 2011: Magnetic field lines arc high above the surface of the sun in this image obtained Feb. 23-27, 2011, by the Solar Dynamics Laboratory. In extreme ultraviolet light the multitude of lines are revealed because charged particles are spinning along them.