Lmst

Comets Calendar 2026: From PanSTARRS To Howell, Feast Your Eyes With Five Celestial Delights This Year

https://fed.brid.gy/r/https://in.mashable.com/science/104335/comets-calendar-2026-from-panstarrs-to-howell-feast-your-eyes-with-five-celestial-delights-this-year

Menin fuskun jatkokurssille viejän roolissa. Onkin vaativaa, kun peilikuva-askellus, oikea käsi irti otteesta, vasemmalla annat vasteen ja nostat ylös portiksi.. pysyt tahdissa. Myös että ymmärtääkö seuraaja. Koska alkeet oli helppoa, niin ihan oikein mulle. Tänään pääsisi jo kilpailemaan.
#tanssi #roolit #comets

A dedicated scan for signs of aliens in interstellar comet 3I/ATLAS. It would have been silly not to look, says @ScienceAlert. A good read for space buffs:

https://flip.it/f60g__

#Science #Space #SpaceExploration #Comets

“Solar System” Quilt (1876–ca. 1883) by Ellen Harding Baker.

Source: Smithsonian Libraries and Archives

https://pdimagearchive.org/images/fa3bf009-8700-48b1-8867-bc6c0a8151c0

#embroidery #planets #orbits #astronomy #quilts #cosmos #education #sun #stars #comets #art #publicdomain

Ellen Harding Baker's solar system quilt

3I/ATLAS was just a comet – but could we have defended ourselves if it was aliens?

https://fed.brid.gy/r/https://metro.co.uk/2025/12/28/3i-atlas-just-a-comet-defended-aliens-24851735/

“A true Projection of the System of the known Comets, all in just Proportion and Position to the Orbits of Saturn and Jupiter.” (1750) by Thomas Wright, from An Original Theory or New Hypothesis of the Universe.

Source: The Getty / Internet Archive

https://pdimagearchive.org/images/4d9b5797-950a-4abc-b976-59cc026a46b8

#diagrams #space #astronomy #cosmos #universe #stars #spheres #celestial #comets #art #publicdomain

illustration from An Original Theory or New Hypothesis of the Universe

2025 December 26

3I/ATLAS Flyby
* Image Credit & Copyright: Dan Bartlett
https://app.astrobin.com/u/h2ologg#gallery
https://www.danbartlett.space/

Explanation:
Attention grabbing interstellar visitor 3I/ATLAS made its not-so-close flyby of our fair planet on December 19 at a distance of 1.8 astronomical units. That's about 900 light-seconds. Still, this deep exposure captures the comet from another star system as it gently swept across a faint background of stars in the constellation Leo about 4 days earlier, on the night of December 15. Though faint, colors emphasized in the image data, show off the comet's yellowish dust tail and bluish ion tail along with a greenish tinged coma. And even while scrutinized by arrays of telescopes and spacecraft from planet Earth, 3I ATLAS is headed out of the Solar System. It's presently moving outward along a hyperbolic trajectory at about 64 kilometers per second relative to the Sun, too fast to be bound the Sun's gravity.
https://science.nasa.gov/solar-system/comets/3i-atlas/3i-atlas-facts-and-faqs/
https://en.wikipedia.org/wiki/3I/ATLAS
https://en.wikipedia.org/wiki/Astronomical_unit
https://app.astrobin.com/i/vnsgps?r=0
https://app.astrobin.com/i/991zqj
https://science.nasa.gov/solar-system/comets/3i-atlas/comet-3i-atlas-image-gallery/
>>https://theskylive.com/3dsolarsystem?obj=c2025n1

https://apod.nasa.gov/apod/ap251226.html

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

2025 December 26

3I/ATLAS Flyby
* Image Credit & Copyright: Dan Bartlett

Explanation:
Attention grabbing interstellar visitor 3I/ATLAS made its not-so-close flyby of our fair planet on December 19 at a distance of 1.8 astronomical units. That's about 900 light-seconds. Still, this deep exposure captures the comet from another star system as it gently swept across a faint background of stars in the constellation Leo about 4 days earlier, on the night of December 15. Though faint, colors emphasized in the image data, show off the comet's yellowish dust tail and bluish ion tail along with a greenish tinged coma. And even while scrutinized by arrays of telescopes and spacecraft from planet Earth, 3I ATLAS is headed out of the Solar System. It's presently moving outward along a hyperbolic trajectory at about 64 kilometers per second relative to the Sun, too fast to be bound the Sun's gravity.

Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
NASA Official: Amber Straughn Specific rights apply.
NASA Web Privacy, Accessibility, Notices;
A service of: ASD at NASA / GSFC,
NASA Science Activation
& Michigan Tech. U.

3I/ATLAS Updates: X Ray Observations Uncover New Details - YouTube
https://www.youtube.com/watch?v=W8tDioTn7sM

#Astronomy #Cosmology #Comets

Humans used to take #comets as omens, not as benign celestial phenomena. On #ThisDayInHistory in 1758, #HalleysComet was spotted by German astronomer #JohannGeorgPalitzsch, just when #EdmundHalley had said it would return. This was the first time a comet was predicted in advance.

Christmas 2025: Was The ‘Star Of Bethlehem’ Intergalactic Comet Like 3I/ATLAS? A NASA Scientist May Have Answers

https://fed.brid.gy/r/https://in.mashable.com/culture/103935/christmas-2025-was-the-star-of-bethlehem-intergalactic-comet-like-3iatlas-a-nasa-scientist-may-have

Asteroid Size Comparison

https://tube.blueben.net/w/irCFLiQHsfFxKhPwxTHMS6

Asteroid Size Comparison

https://tube.blueben.net/w/r7572zZFzNJFDqEeU9vdrw

Interstellar comet 3I/ATLAS is only the third object we've ever seen passing through our solar system from elsewhere in the galaxy. 3I/ATLAS doesn't pose a threat to Earth, and the closest it'll get to our home planet (on Dec. 19) is about 170 million miles—nearly twice the distance between Earth and the Sun.

This image of 3I/ATLAS was taken by our Hubble Space Telescope on Nov. 30, when the comet was about 178 million miles from Earth.

#astrophotography
#comets
#NASA