Astronomy Picture of the Day · December 31, 2001

A Year of Dark Cosmology

The Astronomy Picture of the Day for December 31, 2001 is “A Year of Dark Cosmology,” an image. It is credited to Credit: W. M. Keck Observatory , Mauna Kea Observatory. The original explanation runs about 176 words.

From the explanation

“We live in the exciting time when humanity discovers the nature of our entire universe. During this year, in particular, however, the quest for cosmological understanding appears to have astronomers groping in the dark.”

— APOD editors, December 31, 2001

Read the full explanation on science.nasa.gov

At a glance

Date: December 31, 2001
Type: Image
Credit: Credit: W. M. Keck Observatory , Mauna Kea Observatory
Copyright: No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length: About 176 words

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On this day: December 31 in other years

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Source

Astronomy Picture of the Day, December 31, 2001 — science.nasa.gov/image-article/apod-2001-december-31-a-year-of-dark-cosmology

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.