Astronomy Picture of the Day · January 4, 2009

Breaking Distant Light

The Astronomy Picture of the Day for January 4, 2009 is “Breaking Distant Light,” an image. It is credited to Credit: VIMOS , VLT , ESO. The original explanation runs about 130 words.

From the explanation

“In the distant universe, time appears to run slowly. Since time-dilated light appears shifted toward the red end of the spectrum (redshifted), astronomers are able to use cosmological time-slowing to help measure vast distances in the universe.”

— APOD editors, January 4, 2009

Read the full explanation on science.nasa.gov

At a glance

Date: January 4, 2009
Type: Image
Credit: Credit: VIMOS , VLT , ESO
Copyright: No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length: About 130 words

All of January 2009 → · 2009 by month → · Full archive since 1995 →

Topics in this entry

Galaxies

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On this day: January 4 in other years

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Source

Astronomy Picture of the Day, January 4, 2009 — science.nasa.gov/image-article/apod-2009-january-4-breaking-distant-light

Copy taken Oct 28, 2026, 2:39 AM EDT. The image and explanation belong to their creators. OpenOrbit is not affiliated with or endorsed by NASA.