
ALT A colorful nebula in space with a white haze throughout that is more concentrated in the center with a rippling effect. Gas filaments appear to splash outward from the nebula center, colored yellow, magenta, and blue. A faint black border with right angles at the corners of the images show where the telescope\u2019s field of view stops. Small white stars dot the background. Credit: NASA, ESA, STScI, William Blair (JHU); Image Processing: Joseph DePasquale (STScI)

ALT An image containing four snapshots of Earth, each at a different equinox or solstice. Each Earth is perfectly divided in half by sunlight and shadow. The images of the equinoxes (dates listed as March 20, 2011 and Sept. 20, 2011) have sunlight centered along the equator, with Earth lit from 12 o'clock to 6 o'clock. The image of the summer solstice (June 21, 2011) shows Earth lit from about 11 o'clock to 5 o'clock. The image of the winter solstice (Dec. 21, 2010) shows Earth lit from about 1 o'clock to 7 o'clock. Credit: NASA





























