NASA's Spitzer Space Telescope was able to detect a super-Earth's direct light for the first time using its sensitive heat-seeking infrared vision. Super-Earths are more massive than Earth but lighter than gas giants like Neptune. As this artist's concept shows, in visible light, a planet is lost in the glare of its star. When viewed in infrared, the planet becomes brighter relative to its star. This is largely due to the fact that the planet's scorching heat blazes with infrared light. Even our bodies emanate more infrared light than visible due to our heat. Credit: NASA/JPL-Caltech