Universe  ID: 12856

Redshift Animations

Released on March 11, 2021
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As the universe expands, it stretches the wavelengths of light along with it, a process called redshift. The farther away an object is, the more the light from it has stretched by the time it reaches us.

Credit: NASA/JPL-Caltech//R. Hurt (Caltech-IPAC)

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Stretching over distance makes redshift one of the key tools for measuring the universe. Since astronomers can usually determine what wavelength they would see from up close, they can tell how far a galaxy is by how much the light has changed.

Credit: NASA/JPL-Caltech//R. Hurt (Caltech-IPAC)

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Distant galaxies have all of their visible light shifted into infrared.

Credit: NASA/JPL-Caltech//R. Hurt (Caltech-IPAC)

 

Used Elsewhere In

New ‘Eyewear’ to Deepen the View of NASA’s Roman Space Telescope

Credits

Scott Wiessinger (USRA): Producer
Robert Hurt (IPAC): Lead Animator
Please give credit for this item to:
NASA's Goddard Space Flight Center. However, individual items should be credited as indicated above.

Short URL to share this page:
https://svs.gsfc.nasa.gov/12856

Mission:
Nancy Grace Roman Space Telescope

This item is part of this series:
Astrophysics Animations

Keywords:
SVS >> Galaxy
SVS >> Infrared
SVS >> Astrophysics
SVS >> Universe
SVS >> Redshift
NASA Science >> Universe
SVS >> Nancy Grace Roman Space Telescope