The combination of the two telescopes' super powers reveals previously unseen features of a pair of distant galaxies.
. The light from the background galaxy has to pass through the outer reaches of the spiral arms of the galaxy in the front, which can be distinguished in the image thanks to Webb's infrared vision. Features captured by Webb are represented by green, yellow and reddish hues in this image, while Hubble's observations are displayed in shades of blue.
Tracking the distribution of dust in galaxies helps astronomers understand how this dust alters the brightness and color of background objects, Windhorst added.
Astronomers discovered a previously unknown galaxy thanks to the combination of James Webb Space Telescope's infrared vision and the effect known as gravitational lensing.The unknown galaxy, which has not yet been named, can be seen on the left of the white elliptical galaxy as an arced streak of orange light. In fact, the lensed galaxy is visible twice in this image, thanks to the duplicating effect that comes with gravitational lensing.
"These images of the lensed galaxy are so faint and so red that they went unrecognized in Hubble data, but are unmistakable in Webb's near-infrared image," Windhorst said in the statement."Simulations of gravitationally lensed galaxies like this help us reconstruct how much mass is in individual stars, along with how much dark matter is in the core of this galaxy."
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