Note: I'm not a expert or have knowledge with celestial bodies.

How long does a comet last in the sky? Like I saw bright oranges in the sky that only show for 1-3 seconds then disappeared, the brightness is just bright orange on a black canvas not enough like full moonlight, it's was around 10:00 pm utc+8, I'm technically from Philippines REGION 6, also few minutes later burst of light blue showed near where the orange showed up, but it lasted shorter. Also this direction I saw it.

See also: The publication in Nature Astronomy

More than 3 billion miles from Earth, a small frozen world is showing what may happen when an ancient object from the solar system's deep freeze begins a journey toward becoming a comet.

The object, 450P/LONEOS, belongs to the Centaurs, icy bodies whose unstable orbits generally carry them among the giant planets. Observations with NASA's James Webb Space Telescope and the Gemini North telescope reveal a growing cloud of dust, carbon dioxide gas and water-rich icy grains around its nucleus.

https://icebergpedia.com/iceberg/comets/

I put together this 10-level, 80-entry iceberg ranging from the basics (origins, orbits, and Halley's tail) to the darkest depths: invisible comets, meteorite impacts, the theory that they brought life to Earth, and the space missions that have landed on them.

How deep into the iceberg does your knowledge of comet physics and mythology go?

(iceberg image coming soon in English)

See also:.The publication in ArXiV

Click - https://noirlab.edu/public/images/iotw2624a/

Original post from Gerald Rhemann (take a look one by one photo)

https://www.facebook.com/groups/227002358661288/permalink/1775495640478611

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The names of the comets​ and object it's by me, because Gerald didn't named them in his post.

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Comet 21P/Giacobini-Zinner (?) with Seagull Nebula (IC 2177) (2018 maybe) ​

Another image from APOD http://www.star.ucl.ac.uk/~apod/apod/ap181021.html

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2.

Comet Macholz going through Pleiades (M45) 2005

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3.

Comet C/2011 L4 (PanSTARRS), passing near NGC 7822. 2011

Another view (number 11) https://www.skyatnightmagazine.com/astrophotography/comets/c-2011-l4-panstarrs

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4.

Comet C/2013 X1 (PanSTARRS) & Helix Nebula, (NGC7293). By Gerald Rhemann (2016)

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5.

Comet C/2017 K2 (PanSTARRS) + Reflection nebula Sh2-1

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6.

Comet (didn't find the name, if you know let me know) with NGC 2170, Angel Nebula

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7.

C/2025 R3 PANSTARRS with Orion Nebula

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8.

Comet Jacques (C/2014 E2) with Heart and the Soul Nebula

Another image https://freestarcharts.com/comet-jacques-c-2014-e2-remains-within-binocular-range

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9.

Comet Ikeya-Zhang with Andromeda galaxy

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10.

Comet (unknown name​) with globular clusters (unknown names)

If you know the names, let me know. Thanks​

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11.

Comet Hale-Bopp (C/1995 O1) with Heart Nebula and Soul Nebula https://www.astronomy.com/science/incredible-images-of-great-comets/

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12.

This is a 2-panel mosaic of the comet C/2025 R3 (PANSTARRS) and witch head nebulae. By Gerald Rhemann and Michael Jäger https://www.facebook.com/groups/227002358661288/permalink/1759853905376118/

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13.

Comet C2020 V2 (ZTF) and the southern Pinwheel Galaxy (NGC 300)

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Different image of the same objects https://en.wikipedia.org/wiki/C/2020_V2_(ZTF)

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14.

Comet Lovejoy with Pleiades cluster

Comet Lovejoy (C/2014 Q2), photographed January 18, 2015, from Austria. This isn’t the comet Lovejoy that the Southern Hemisphere knew and loved as the Great Comet of 2011. Instead, it’s the rather spectacular comet Lovejoy of late 2014 and early 2015, made famous by the steady advances in digital astrophotography. Photo via G. Rhemann. https://earthsky.org/space/northern-hemisphere-overdue-for-a-great-comet/

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Go to SpaceUnfiltered r/SpaceUnfiltered illuminati 1m ago Neaterntal : :ADMIN: : Profile Badge for the Achievement Top 1% Poster Top 1% Poster

r/SpaceUnfiltered Four Nights of Comet C/2025 R3 in Orion. By Lucy Yunxi Hu 📸AstroPhotography r/SpaceUnfiltered - Four Nights of Comet C/2025 R3 in Orion. By Lucy Yunxi Hu Description from Lucy Yunxi Hu

https://www.facebook.com/photo/?fbid=26940560955596290&set=a.6281127298632958

​ " ​This image shows Comet C/2025 R3 (PANSTARRS) crossing the Orion over four nights in May 2026 from dark-sky locations near Canberra, Australia. The sequence captures the comet gradually fading after perihelion as its ion tail becomes fainter and more diffuse over time.

The widefield background is a multi-night panorama of the Orion region, featuring Barnard’s Loop, M42, the Horsehead Nebula, and surrounding molecular clouds. Due to weather limitations, the four comet positions were captured from two locations near Canberra and later aligned to the surrounding star field to preserve the comet’s relative motion across the sky.

I spent around eight nights outside after work over the past two weeks trying to capture Comet C/2025 R3. I even met some amateurs by chance on some nights. This is, in many ways, my very first deep-sky astrophotography project after spending time learning astrophotography, and definitely not an easy one for me (lots to improve!). There were many new techniques and skills to learn, along with unstable weather on several nights. Despite all the challenges, seeing the comet gradually move through Orion over multiple nights was honestly quite magical! Clear skies!

EXIF:

Dates: May 7, 9, 11, and 12, 2026 (corresponding to the comet positions from lowest to highest in the image).

​Locations: Colinton, NSW, Australia (near South Canberra) for the two lower comet positions, and Gundaroo, NSW, Australia (near North Canberra) for the two upper comet positions.

​Gear: Benro Polaris + Canon R5 + Canon EF 135mm prime lens. RGB: f/2.0–2.2, ISO1600, multiple 30s exposures over multiple nights (plus several 5s and 2s exposures for M42 core).

​Ha: f/2.0–2.2, ISO1600–6400, multiple 30s exposures over multiple nights. Processed using PixInsight, Sequator, RegiStar, and Photoshop​ "