This image of the star-forming region Rho Ophiuchi was taken in 1983 by the Infrared Astronomical Satellite (IRAS), the first infrared telescope ever launched into Earth orbit. Infrared light refers to wavelengths slightly longer than what human eyes can see. Most infrared wavelengths are blocked by Earth's atmosphere, so infrared space telescopes are essential for observing the full breadth of infrared light from cosmic sources. Rho Ophiuchi's thick clouds of gas and dust block visible light, but IRAS' infrared vision made it the first observatory to be able to pierce those layers to reveal newborn stars nestled deep inside. https://photojournal.jpl.nasa.gov/catalog/PIA26271