How JWST looks back through time

The James Webb Space Telescope (JWST) is able to see further back to the origins of the universe than any previous telescope

GAZING BACK IN TIME

First stars form	
First galaxies form
Modern galaxies form
Present day

Big Bang (13.8 billion years ago)

Hubble viewing limit (13.4 billion years)

JWST viewing limit (possibly up to 13.7 billion years)

Infrared instruments have longer wavelength coverage than Hubble

Light from earliest stars begins its journey around 100 million years after Big Bang. JWST will view those stars as they were billions of years ago

Micro-wave 	Far infrared 	Mid infrared 	Near infrared	Visible light


Sources: NASA, BBC, Independent
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