Public domain
The Light and Dark Sides of a Distant Planet
From the collection of NASA Image and Video Library. Free to download, adapt and use — no permission needed.
About this work
The top graph consists of infrared data from NASA Spitzer Space Telescope. It tells astronomers that a distant planet, called Upsilon Andromedae b, always has a giant hot spot on the side that faces the star, while the other side is cold and dark.
NASA Image and Video Library’s own descriptionSubjects
Credit lineThe Light and Dark Sides of a Distant Planet. NASA/JPL, 2006-10-12. Public domain. ID: PIA01937.