INFRARED ASTRONOMY: More Than Our Eyes Can see
Visible light (left) and infrared (right) images of the constellation Orion
Why observe infrared? Many objects in space emit almost all their energy at infrared wavelengths. via Twitter / SOFIAtelescope
The visible and infrared images above illustrate the different views of the universe that can be obtained with an infrared observatory. Both images are of the constellation Orion (outlined).
- The image on the left was made with a camera sensitive to the same type of light that the human eye or the Hubble Space Telescope can see. Prominent objects in that image are stars with about the same temperature as our Sun.
- The image on the right shows the same scene viewed at far-infrared wavelengths by a space observatory or SOFIA. Features that cannot be seen at all using visible light show up very brightly in the infrared.
At long infrared wavelengths, astronomers are able to study the distribution of dust that characterizes these cocoons where star formations occur. At short infrared wavelengths, scientists can pierce through the obscuring dust and gas to reveal the young stars in the process of being born.
SOURCE: SOFIA | NASA
Image Credit: Akira Fuji / Infrared Astronomical Satellite
