Search found 13076 matches
- Sun Apr 28, 2024 11:42 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Regulus and the Dwarf Galaxy (2024 Apr 26)
- Replies: 13
- Views: 563
Re: APOD: Regulus and the Dwarf Galaxy (2024 Apr 26)
https://upload.wikimedia.org/wikipedia/commons/6/6b/HRDiagram.png https://apod.nasa.gov/apod/image/0102/m55cmd_mochejska.jpg Galaxies and globular clusters contain different types of stars. Ann Exactly. Which reasonably suggests that they have entirely different formation processes. Is it possible ...
- Sun Apr 28, 2024 6:04 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: All Sky Moon Shadow (2024 Apr 27)
- Replies: 10
- Views: 304
Re: APOD: All Sky Moon Shadow (2024 Apr 27)
This image really showcases just how tiny this phenomenon really looks to the unaided eye. Still, though, it's a great image! Actually, to the unaided eye, it looks much larger. What this picture illustrates is just how small it actually is, despite the powerful illusion of it appearing much larger...
- Sat Apr 27, 2024 5:20 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Colors of Twilight vs. Sunset/Sunrise
- Replies: 28
- Views: 1892
Re: Colors of Twilight vs. Sunset/Sunrise
Gretel. She'll be kidding in a couple of weeks. Thanks for teaching me a new word, Chris! I only knew one meaning of the word "kidding". I'm sure Gretel's kids will be adorable! Ann https://asterisk.apod.com/download/file.php?id=49542&t=1 Oh no no no, I can't stand the cuteness of thi...
- Sat Apr 27, 2024 6:56 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: All Sky Moon Shadow (2024 Apr 27)
- Replies: 10
- Views: 304
Re: APOD: All Sky Moon Shadow (2024 Apr 27)
Is that Cassiopeia's W near center? Probably not near center, but Cassiopeia should be in the picture. tse20240408h14_1024[1].jpg All Sky Moon Shadow Image Credit & Copyright: Tunc Tezel (TWAN) Venus Jupiter and Cassiopeia April 2024.png Venus is in Pisces, close to the border of Aries, Jupiter...
- Fri Apr 26, 2024 2:09 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Regulus and the Dwarf Galaxy (2024 Apr 26)
- Replies: 13
- Views: 563
Re: APOD: Regulus and the Dwarf Galaxy (2024 Apr 26)
Well I was going to ask at what point we differentiate between a star cluster and dwarf spheroidal galaxy, but thanks to the color commentary I am guessing the black hole at the center may be a factor. :idea: Some globular clusters have central black holes. I think there are at least two difference...
- Fri Apr 26, 2024 1:46 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Regulus and the Dwarf Galaxy (2024 Apr 26)
- Replies: 13
- Views: 563
Re: APOD: Regulus and the Dwarf Galaxy (2024 Apr 26)
Well I was going to ask at what point we differentiate between a star cluster and dwarf spheroidal galaxy, but thanks to the color commentary I am guessing the black hole at the center may be a factor. :idea: I'll try to answer. Globular clusters are typically compact and small in size. https://cdn...
- Fri Apr 26, 2024 6:49 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Regulus and the Dwarf Galaxy (2024 Apr 26)
- Replies: 13
- Views: 563
Re: APOD: Regulus and the Dwarf Galaxy (2024 Apr 26)
Wow, that's some spectacular info about tiny dwarf galaxy Leo I! :shock: But first, let's consider foreground star Regulus: Regulus_Dwarf_by_Markus_Horn1024[1].png Regulus and the Dwarf Galaxy Image Credit & Copyright: Markus Horn Regulus is the closest of all B-type stars at 79 light-years from...
- Thu Apr 25, 2024 5:07 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: NGC 604: Giant Stellar Nursery (2024 Apr 25)
- Replies: 7
- Views: 436
Re: APOD: NGC 604: Giant Stellar Nursery (2024 Apr 25)
I have two favorite images of NGC 604. Today's APOD is not one of them. Let's start with the Chandra portrait of NGC 604: APOD 25 April 2024 annotated.png Possible location of the Chandra bubbles in the APOD. Maybe it's just the right-hand bubble that is seen in the Chandra image. https://chandra.ha...
- Wed Apr 24, 2024 6:25 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Dragon's Egg Bipolar Emission... (2024 Apr 24)
- Replies: 3
- Views: 547
Re: APOD: Dragon's Egg Bipolar Emission... (2024 Apr 24)
Yes, that's a nice APOD! I particularly like the faint blue "outer halo or nebula". Blue gas does not appear naturally in space, so we have to assume that the blue gas is green OIII emission that has been mapped as blue. https://apod.nasa.gov/apod/image/2404/DragonsEgg_Prangley_960.jpg The...
- Wed Apr 24, 2024 5:07 am
- Forum: Open Space: Discuss Anything
- Topic: What is this
- Replies: 1
- Views: 92
Re: What is this
I have a couple of pictures that I think is a comet during the eclipse. I don’t know how to insert them though. There was a comet seen during the eclipse. It was a Sun-grazing comet. The comet Pons-Brooks was also seen, but farther away from the eclipsed Sun. The Sun-grazing comet is in the picture...
- Tue Apr 23, 2024 7:17 pm
- Forum: The Observation Deck: Latest Sky Photography
- Topic: Found Images: 2024 April
- Replies: 30
- Views: 1151
Re: Found Images: 2024 April
Salt Lake Pretty https://www.astronomy.com/picture-of-the-day/photo/salt-lake-pretty/ Credit and copyright: Abhijit Patil https://www.astronomy.com/wp-content/uploads/sites/2/2024/04/Badwater_SMW_panocopy.jpg?fit=620%2C310 This picture was published in Astronomy Magazine and chosen as Picture of th...
- Tue Apr 23, 2024 6:08 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: GOTD: Galaxy Of The Day
- Replies: 53
- Views: 305235
Re: GOTD: Galaxy Of The Day
Hubble captures a bright galactic and stellar duo phys.org | Original release 2024 April 22 https://scx1.b-cdn.net/csz/news/800a/2024/hubble-captures-a-brig.jpg While the focus of this image is the spiral galaxy NGC 3783, the eye is equally drawn to the very bright object in the lower right part of...
- Tue Apr 23, 2024 5:40 am
- Forum: The Communications Center: Breaking Science News
- Topic: MAUVE survey: Giant galactic explosion in NGC 4383
- Replies: 1
- Views: 182
Re: MAUVE survey: Giant galactic explosion in NGC 4383
MAUVE survey: Giant galactic explosion in NGC 4383 exposes galaxy pollution in action phys.org | 2024 April 21 https://scx1.b-cdn.net/csz/news/800a/2024/giant-galactic-explosi.jpg A team of international researchers studied galaxy NGC 4383, in the nearby Virgo cluster, revealing a gas outflow so la...
- Mon Apr 22, 2024 5:51 pm
- Forum: Open Space: Discuss Anything
- Topic: Weather!
- Replies: 2850
- Views: 987512
Re: Weather!
Yesterday the weather here in Malmö was nice, and I was out walking in the parks downtown, taking many pictures with my fairly simple mobile phone. The picture that I liked best was this one: Nyutslagna lindar kanalbåt och flanörer.jpg I liked it so much that I submitted it to a program on Swedish T...
- Mon Apr 22, 2024 5:51 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Moon and Smoke Rings from Mt. Etna (2024 Apr 22)
- Replies: 6
- Views: 419
Re: APOD: Moon and Smoke Rings from Mt. Etna (2024 Apr 22)
APOD 22 April 2024 cropped.png Moon and Smoke Rings from Mt. Etna (cropped). Image Credit & Copyright: Dario Giannobile Great image ! :D But I took the liberty of editing out Mt. Etna itself to bring out the otherworldliness of the almost organic and lifelike tendrils of smoke rising from Mt. E...
- Mon Apr 22, 2024 5:20 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: NewJWST: New Pictures from JWST
- Replies: 18
- Views: 14847
Re: NewJWST: New Pictures from JWST
NGC 3972 jac berne (flickr) STScI Mikulski Archive | Release Date 2024-04-19 18:23 https://live.staticflickr.com/65535/53669315446_4cfec79a38_b.jpg NGC 3972 is a spiral galaxy located in the northern constellation of Ursa Major. It was discovered by William Herschel on April 14, 1789.This galaxy is...
- Sat Apr 20, 2024 7:53 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Colors of Twilight vs. Sunset/Sunrise
- Replies: 28
- Views: 1892
Re: Colors of Twilight vs. Sunset/Sunrise
All I can say is that purple light triggers a response from both the blue-sensitive and the red-sensitive rods in our retinas. Consider this color, ███ . The (rgb) values of this particular color is, r = 123 , g = 0, and b = 222 . So purple, at least as far as our eyes are concerned, is indeed a mi...
- Sat Apr 20, 2024 4:15 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Great Carina Nebula (2024 Apr 19)
- Replies: 9
- Views: 627
Re: APOD: The Great Carina Nebula (2024 Apr 19)
I had no idea that NGC 3324 referred to the Keyhole Nebula. Guess I was wrong about it referring to the Gabriela Mistral Nebula. Wikipedia wrote: https://upload.wikimedia.org/wikipedia/commons/thumb/7/70/Carina_Nebula_by_Harel_Boren_%28151851961%2C_modified%29.jpg/435px-Carina_Nebula_by_Harel_Boren...
- Fri Apr 19, 2024 7:05 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Facing NGC 1232 (2024 Apr 18)
- Replies: 5
- Views: 498
Re: APOD: Facing NGC 1232 (2024 Apr 18)
Something which perplexes me is that when I type in my brower's search engine that websites come up with different data for NGC1232 distance and size. Most webpages say 60 million light years away, 1 site said 61 million, and only APOD said 47 million light years. There was repetition of the size o...
- Fri Apr 19, 2024 6:21 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Great Carina Nebula (2024 Apr 19)
- Replies: 9
- Views: 627
Re: APOD: The Great Carina Nebula (2024 Apr 19)
As usual, I'm failing to place this apparent close-up in the larger image shown here: https://cdn.esahubble.org/archives/images/screen/heic0707a.jpg I'd guess it's the black V slightly to the left and downward from the center, but the angle of that V doesn't seem to match? APOD 19 April 2024 detail...
- Fri Apr 19, 2024 4:21 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Cigar Galaxy from Hubble and Webb (2024 Apr 15)
- Replies: 27
- Views: 1331
Re: APOD: The Cigar Galaxy from Hubble and Webb (2024 Apr 15)
I also like microquasars with pigtails :evil: https://live.staticflickr.com/65535/53664019544_7e538f5509_b.jpg https://live.staticflickr.com/65535/53664019544_e0caf95736_o.jpg https://live.staticflickr.com/65535/53663661611_5c13ca7891_o.jpg https://www3.mpifr-bonn.mpg.de/staff/abrunthaler/m82/Radio...
- Fri Apr 19, 2024 6:58 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Great Carina Nebula (2024 Apr 19)
- Replies: 9
- Views: 627
Re: APOD: The Great Carina Nebula (2024 Apr 19)
I'm somewhat critical of the colors of this APOD. APOD 19 April 2024 annotated.png The Great Carina Nebula. Image Credit & Copyright: Demison Lopes Carina Nebula Harel Boren annotated.png The Great Carina Nebula. Credit: Harel Boren Harel Boren's image is an RGB one, but I don't know what filter...
- Thu Apr 18, 2024 9:40 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Cigar Galaxy from Hubble and Webb (2024 Apr 15)
- Replies: 27
- Views: 1331
Re: APOD: The Cigar Galaxy from Hubble and Webb (2024 Apr 15)
https://www.wired.com/images_blogs/wiredscience/2011/01/WISE-M81-M82.jpg Clearly M82 is an unusual case, because if it wasn't, we'd see many more galaxies like it. Ann Looks like the Milky Way, Andromeda and the Triangulum but M82 the Cigar is passing through a baby boom phase right now and NGC 307...
- Thu Apr 18, 2024 7:07 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Facing NGC 1232 (2024 Apr 18)
- Replies: 5
- Views: 498
Re: APOD: Facing NGC 1232 (2024 Apr 18)
Yes, I like it! :D https://www.eso.org/public/archives/images/screen/eso9845d.jpg https://apod.nasa.gov/apod/image/2404/NGC1232_Eye_of_God_Galaxy_fullsize_2024-03-28_1024.jpg What I particularly like about Neil Corke's portrait of NGC 1232 is that he shows us the pink emission nebulas in the arms. T...
- Thu Apr 18, 2024 4:55 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Total Eclipse and Comets (2024 Apr 17)
- Replies: 25
- Views: 1041
Re: APOD: Total Eclipse and Comets (2024 Apr 17)
I wonder what makes the comet get too close to the Sun ? I'd imagine gravity pull .. but then, how long it must have taken that comet to reach that stage (i mean how many times it must have made rounds around Sun and how many years it must have been doing it before finally getting too close and get...