image credit: ROSAT Mission, Max-Planck-Institut für Extraterrestrische Physik; image source; larger image
APOD: X-Ray Moon
What you see above is two images of the moon in x-ray light as it moves in front of an x-ray binary star system. The binary is visible as a yellow dot in the first image before being obscured by the moon in the second. Learn more about this image here. To see another image of the moon in x-ray light, see APOD: X-Ray Moon.
X Rays: Another Form of Light
X-ray astronomy helps astronomers see a complete picture of the universe. Find out more at X Rays: Another Form of Light, and explore the mission of the Chandra X-ray Observatory with this activity.
To learn more about the x-ray sky, watch the High-Energy Groovy Movie. (Be patient--it's a slow download.)