Astronomy Picture of the Day ·

Microwave Hotspots: The Oldest Structures Known

The Astronomy Picture of the Day for October 29, 2000 is “Microwave Hotspots: The Oldest Structures Known,” an image. It is credited to Credit: DMR , COBE , NASA. The original explanation runs about 181 words.

Microwave Hotspots: The Oldest Structures Known
Credit: DMR , COBE , NASA Shown from science.nasa.gov. Not hosted by OpenOrbit.

From the explanation

“These spots are the oldest, most distant structures known. They are seen on the above two images of the microwave sky, north and south of our galaxy’s equator, based on four-year’s worth of data from NASA’s COsmic Background Explorer (COBE) satellite (1989-1993).”

— APOD editors, October 29, 2000

Read the full explanation on science.nasa.gov

At a glance

Date
October 29, 2000
Type
Image
Credit
Credit: DMR , COBE , NASA
Copyright
No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length
About 181 words

All of October 2000 → · 2000 by month → · Full archive since 1995 →

Topics in this entry

Galaxies

Topics are matched from words in the title and explanation.

On this day: October 29 in other years

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Source

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.