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#astronomyday

AkaSci 🛰️AkaSci@fosstodon.org
2024-05-19

Next on #AstronomyDay is this strange looking lenticular galaxy NGC 4753 by #Hubble.

Those are dust lanes twisting around the galactic nucleus and are likely the result of a merger with a dwarf galaxy about 1.3 billion years ago.

The gas and dust in the galactic disk got twisted by "differential precession" and are seen as the complex shapes seen edge-on from earth.

Most of the unseen mass in the galaxy lies in a slightly flattened, spherical halo of dark matter.

science.nasa.gov/missions/hubb
2/n

1. Hubble image of NGC 4753 2. A model of NGC 4753's dust lanes seen from multiple angles. Source: https://articles.adsabs.harvard.edu/pdf/1992AJ....104.1339S
AkaSci 🛰️AkaSci@fosstodon.org
2024-05-18

Let's celebrate #AstronomyDay with this image taken today by Mars rover Perseverance's SHERLOC Autofocus and Context Imager (ACI).

This is the first such image of a rock sample since Dec 16, 2023, when the dust cover of the camera and laser spectroscopy instrument got stuck. It is still stuck, but in an open position and its auto-focus mechanism is nonoperational.

The camera took a sequence of images from different distances; the middle ones are in focus.

🎉
mars.nasa.gov/mars2020/multime
#Mars
1/n

NASA's Mars Perseverance rover acquired this image using its SHERLOC Autofocus and Context Imager (ACI), located on the turret at the end of the rover's robotic arm. This image was acquired on May 18, 2024 (Sol 1153) at the local mean solar time of 16:36:25. Image Credit: NASA/JPL-Caltech
Rageelarageela
2024-04-29

Exploring the cosmos one leap at a time! Happy Astronaut Day to the dreamers and stargazers!

Whiskers 🇦🇺ecoscore@aus.social
2023-04-30

What a weekend! Yesterday #AstronomyDay and today #InternationalJazzDay
Tomorrow isn't so ordinary either, it's #Mayday 😆

Stella-Luna Observatory ✨🌙StellaLunaObs@mastodon.online
2023-04-29

Happy International Astronomy Day!
Pictured: Conjunction of Moon, Venus, and Mercury the evening of March 3, 2018.
Photo by James Guilford.

#astronomy #astronomyday #internationalastronomyday

In a dark, cloud-streaked sky after sunset, a tiny sliver of Earth's Moon is seen above a treeline. To the right of Moon is a bright dot which is planet Venus and above and to the right of Venus is a dimmer dot of light -- Mercury. In the foreground is a mirror-still lake surface which reflects a dull blur image of Moon, a bright streak of Venus, and the bare limbs of the line of trees.
Naztronomynaz@astrodon.social
2023-04-29

Happy spring astronomy day! These are planets for a mobile that my wife made. *Not to scale.

#astronomy #astronomyday #springastronomyday #planets

astropage.euastropageeu
2022-10-01

zum , aber leider bei schlechtem Seeing.

Jupiter for the but under unfavorable seeing conditions.
astropage.eu/wp-content/galler

Sternwarte_info
2022-08-30

WAS WIR hier machen
..
(mit einiger unverständlicher Behinderung durch teils deutlich
UNWISSENDE)

Astronomie & Co zu Menschen bringen
..
macht auch


(VA gibt es wohl seit 1973)
Quelle
de.wikipedia.org/wiki/Astronom GER AT CH ..

LANGE waren Sternwarten und ihre Vorgänger vielen Menschen verschlossen Entdecke 400 Jahre moderne Blicke per Optik unter http://de.wikipedia.org/wiki/Sternwarte#Neuzeit Credit Wikipedia Archiv - zeigt KLEINE Sternwarte
Dave xxxiv 🇨🇦📷🔭✨nlskies
2022-05-07

In honour of Int'l , here's an image I've not put out there before:
NGC 3718 from 3rd April

A strikingly pretty & often overlooked galaxy below the big dipper.
Also visible - Hickson 56 galaxy cluster.

🔭Esprit 150
📷QHY128C
⏲️37x5min (3hr 5m)

Dave xxxiv 🇨🇦📷🔭✨nlskies
2022-05-07

Saturday May 7th is International Astronomy Day.
earthsky.org/space/internation

Check out your local astronomy club for possible public outreach activities. In Canada, that would be a centre such as
:
stjohnsrasc.ca/astroday/astrod


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