Asteroid or comet? Meteor or meteorite? How to identify and classify the rocks you see streaking through the sky

An observatory director describes the differences between the types of rocks that fly through space.

The Conversation
Asteroid or comet? Meteor or meteorite? How to identify and classify the rocks you see streaking through the sky

An observatory director describes the differences between the types of rocks that fly through space.

The Conversation

2026 June 8

Comet R3 PanSTARRS Through Time
* Image Credit & Copyright: Jakub Kuřák & Martin Mašek (FZU of the Czech Academy of Sciences)
https://www.instagram.com/jakubkurak/
https://www.fzu.cz/en/people/mgr-martin-masek
https://www.fzu.cz/en/home

Explanation:
What happens to a comet as it leaves our inner Solar System? Now the arrival of a comet into the inner Solar System is typically heralded with great fanfare and high hopes that the comet will become bright and photogenic. But on the way out, the comet's nucleus is less warmed by the Sun, less gas and dust are expelled, the bright coma around the nucleus shrinks and fades, and the tail length drops off. Many comets will then return to the outer Solar System and only return in hundreds or thousands of years. In contrast, some comets -- like Comet C/2025 R3 (PanSTARRS) -- receive a gravitational kick from the planets and so will never return. Pictured, Comet R3 PanSTARRs was imaged deeply many nights in early to mid-May near Cerro Paranal in Chile. Later images appear closer to the top and clearly show the shrinking ion tail.
https://science.nasa.gov/solar-system/solar-system-facts/
https://i.pinimg.com/236x/bf/f5/d0/bff5d074d399bdfec6071e9168398406.jpg
https://apod.nasa.gov/apod/ap220408.html
https://apod.nasa.gov/apod/ap241006.html
https://apod.nasa.gov/apod/ap251019.html
https://science.nasa.gov/sun/
https://apod.nasa.gov/apod/ap151118.html
https://www2.ess.ucla.edu/~jewitt/coma.html
https://apod.nasa.gov/apod/ap241018.html
https://en.wikipedia.org/wiki/Oort_cloud
https://en.wikipedia.org/wiki/C/2025_R3_(PanSTARRS)
https://en.wikipedia.org/wiki/Gravity_assist
https://theskylive.com/c2025r3-info
https://youtu.be/shbwtlPIDI4
https://en.wikipedia.org/wiki/Chile
https://spaceplace.nasa.gov/comets/en/anatomy-of-a-comet.en.jpg

https://apod.nasa.gov/apod/ap260608.html

#space #comets #astrophotography #photography #science #astronomy #nature #NASA #education #apod

Sad news on the comets-ml list today - Alan Hale (a great comet observer and co-discoverer of Comet C/1995 O1 Hale-Bopp) died today. Vale Alan, ad astra.

https://groups.io/g/comets-ml/message/35420
#comets #astronomy

The breezy Californian patio I'm on now is *nice*, don't get me wrong...but I'd really rather be here tonight. "Dancing into the Comets", as painted by yours truly.

#art #digitalart #digitalpainting #painting #spaceart #comets #beautifulwoman #beautifulgirl #dance #dancer #dancing

The comet that appeared over Augsburg in November, 1577. (1577).

Source: Zentralbibliothek Zürich / e-manuscripta

Available to buy as a print.

https://pdimagearchive.org/images/14f2d55d-d158-401b-8f5f-a378cf7bd1ee

#eclipses #astronomy #germany #nomenclature #buildings #protestant-reformation #comets #art #publicdomain

#brautigan
#beat
#refrigerator
#pumpkins
#comets

There is darkness on your lantern and pumpkins in your wind.
and Oh, they clutter up your mind
with their senseless bumping
while your heart is like a sea gull
frozen into a long distance telephone
call.

I’d like to take the darkness
off your lantern and change the pumpkins
into sky fields of ordered comets
and disconnect the refrigerator telephone
that frightens your heart into standing
still.
Brautigan, Rommel Drives on Deep Into Egypt

#eM