قالب وردپرس درنا توس
Home / Science / Space Photos of the Week: Reading the Universe in the Infrared

Space Photos of the Week: Reading the Universe in the Infrared



The human eye can process light wavelengths in the range of 380 to 740 nanometers. However, there is a whole strip of "light" that we can not see. Cue the failed telescopes! This week, we'll be looking at photos of space filtered for the infrared – wavelengths from 700 nanometers to 1 millimeter. By filtering to infrared, scientists can see through the visible material in the way, such as gas and dust and other material, to see heat, and in space there is a lot of hot material. That's why NASA has telescopes like Spitzer, which orbit the Earth and observe the universe in the infrared. They show us things that our miserable eyes would never see alone ̵

1; a space photograph cool enough to make Andy Warhol proud: this four-part series features the Whirlpool galaxy and its partner above, a satellite galaxy called NGC 5195. This series is a good example of how different features can occur when cameras filter for different wavelengths of light. The far left image is captured in visible light, a notable scene, even though the galaxy is more than 23 million light-years from Earth. The second image adds a little extra: The visible light is shown in blue and green, and the bright red stripes are infrared, revealing new star activity and hot ionized material. Photo: NASA / JPL-Caltech
With this infrared image of the Orion Nebula, astronomers can see dust stemming from star formation. The central light blue region is the hottest part of the fog. When the byproducts of the Star Factory are expelled, they cool and appear red. Photo: ESA / NASA / JPL-Caltech
Cygnus X is a gigantic star complex with about 3 million solar masses and one of the largest known protoster factories. This image shows CygnusX in infrared light and glowing hot. The bright white spots form stars, and the red tendrils show how gas and dust are expelled after birth. Photo: NASA Goddard

Source link