Astronomy Picture of the Day ·

Heating Coronal Loops

The Astronomy Picture of the Day for September 28, 2000 is “Heating Coronal Loops,” an image. It is credited to Credit: M. Aschwanden et al. ( LMSAL ), TRACE , NASA. The original explanation runs about 164 words.

Heating Coronal Loops
Credit: M. Aschwanden et al. ( LMSAL ), TRACE , NASA Shown from science.nasa.gov. Not hosted by OpenOrbit.

From the explanation

“Extending above the photosphere or visible surface of the Sun , the faint, tenuous solar corona can’t be easily seen from Earth, but it is measured to be hundreds of times hotter than the photosphere itself. What makes the solar corona so hot?”

— APOD editors, September 28, 2000

Read the full explanation on science.nasa.gov

At a glance

Date
September 28, 2000
Type
Image
Credit
Credit: M. Aschwanden et al. ( LMSAL ), TRACE , NASA
Copyright
No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length
About 164 words

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

Topics in this entry

The Sun

Topics are matched from words in the title and explanation.

On this day: September 28 in other years

On Amazon

Popular picks for space fans

As an Amazon Associate I earn from qualifying purchases.

Electronics Amazon Kindle Paperwhite Signature Edition 32GB Read astronomy and space-history books anywhere. View on Amazon → Electronics Bose QuietComfort Wireless Headphones Noise-cancelling headphones for documentaries and launch livestreams. View on Amazon →

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.