Astronomy Picture of the Day ·

Comet C/2025 R2 (SWAN)

The Astronomy Picture of the Day for September 18, 2025 is “Comet C/2025 R2 (SWAN),” an image. The picture is copyrighted by its creator (Image Credit & Copyright: Team Ciel Austral). The original explanation runs about 173 words.

Comet C/2025 R2 (SWAN)
Credit: Image Credit & Copyright: Team Ciel Austral Copyrighted Shown from science.nasa.gov. Not hosted by OpenOrbit.

From the explanation

“A new visitor from the outer Solar System , comet C/2025 R2 (SWAN) also known as SWAN25B was only discovered late last week, on September 11. That’s just a day before the comet reached perihelion, its closest approach to the Sun.”

— APOD editors, September 18, 2025

Read the full explanation on science.nasa.gov

At a glance

Date
September 18, 2025
Type
Image
Credit
Credit: Image Credit & Copyright: Team Ciel Austral
Copyright
Copyrighted by the credited creator. Ask the copyright holder before reusing it.
Explanation length
About 173 words

All of September 2025 → · 2025 by month → · Full archive since 1995 →

Topics in this entry

The SunComets

Topics are matched from words in the title and explanation.

On this day: September 18 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.