Search found 3111 matches
- Fri Sep 20, 2024 12:59 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: A Hazy Harvest Moon (2024 Sep 20)
- Replies: 3
- Views: 236
Re: APOD: A Hazy Harvest Moon (2024 Sep 20)
What other cultural significance does the Harvest Moon hold in different tunnel rush regions around the world? Google is useful here. Various articles found, but here's a more informative one (assuming it's accurate!): https://www.outdoorapothecary.com/septembers-full-moon/ THE FOLKLORE OF Septembe...
- Thu Sep 19, 2024 6:58 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Dark Seahorse of Cepheus (2024 Sep 19)
- Replies: 4
- Views: 474
- Wed Sep 18, 2024 3:51 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Find the Man in the Moon (2024 Sep 15)
- Replies: 14
- Views: 999
Re: APOD: Find the Man in the Moon (2024 Sep 15)
And why was that? [ EDIT: never mind - I see there was a partial lunar eclipse last night. I don't keep up with daily astronomy sky watching news, I'm afraid. ]Chris Peterson wrote: ↑Wed Sep 18, 2024 2:28 pm The Man in the Moon got a bit of a haircut last night!
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E7_49069_Enhanced_NR_RGB_VNG.jpg
- Mon Sep 16, 2024 9:01 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Mercury's Vivaldi Crater from... (2024 Sep 16)
- Replies: 9
- Views: 728
Re: APOD: Mercury's Vivaldi Crater from... (2024 Sep 16)
Hmmm https://live.staticflickr.com/65535/53999883294_1ea7eb7b1f_b.jpg https://solarsystem.nasa.gov/gltf_embed/2369/ ... What are you showing here? it almost looks like you reflected around the vertical midline, but not quite. Is this what the actual surface looks like (minus the blurry section in t...
- Mon Sep 16, 2024 6:33 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Mercury's Vivaldi Crater from... (2024 Sep 16)
- Replies: 9
- Views: 728
Re: APOD: Mercury's Vivaldi Crater from... (2024 Sep 16)
Two different hits in approximately the same place? Hmmm https://live.staticflickr.com/65535/53999883294_1ea7eb7b1f_b.jpg https://solarsystem.nasa.gov/gltf_embed/2369/ ... What are you showing here? it almost looks like you reflected around the vertical midline, but not quite. Is this what the actu...
- Mon Sep 16, 2024 1:24 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Find the Man in the Moon (2024 Sep 15)
- Replies: 14
- Views: 999
Re: APOD: Find the Man in the Moon (2024 Sep 15)
I don't on my Android phone. Just a context menu. Which is what I'd expect unless some very specific coding on the website isn't done. Odd. It only works if you long press on the image on the page with the text. Not if you click the image first, which makes sense. I see the same behavior with both ...
- Sun Sep 15, 2024 8:47 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Find the Man in the Moon (2024 Sep 15)
- Replies: 14
- Views: 999
Re: APOD: Find the Man in the Moon (2024 Sep 15)
I'm not sure if that works on touchscreen devices. Hover operations generally don't unless very deliberate and careful workarounds are provided. On my iPad anyway, if I long press the image, the hover-over image shows up. Ditto for my Android phone. I don't on my Android phone. Just a context menu....
- Sun Sep 15, 2024 8:15 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Find the Man in the Moon (2024 Sep 15)
- Replies: 14
- Views: 999
Re: APOD: Find the Man in the Moon (2024 Sep 15)
Ooop! Sorry, I failed to see that this is a "roll-on-roll off" (RORO) image showing different images depending on whether the cursor is on the image or not. Will all viewers have access to the RORO feature? I'm not sure if that works on touchscreen devices. Hover operations generally don'...
- Sat Sep 14, 2024 1:10 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Moona Lisa (2024 Sep 14)
- Replies: 4
- Views: 589
Re: APOD: The Moona Lisa (2024 Sep 14)
The image does not look like the Mona Lisa to me. It is more like the head in the Madonna of the Yarnwinder (Spindles), the Buccleuch version! Nice. I had to google that. From https://en.wikipedia.org/wiki/Madonna_of_the_Yarnwinder The Madonna of the Yarnwinder (Italian: Madonna dei Fusi, "Mad...
- Fri Sep 13, 2024 6:33 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Aurora Australis and the ISS (2024 Sep 13)
- Replies: 1
- Views: 629
Re: APOD: Aurora Australis and the ISS (2024 Sep 13)
The auroral glow is caused by emission from excited oxygen atoms in the extremely rarefied upper atmosphere still present at the level of the orbiting outpost. So, the ISS is actually embedded within the aurora I suppose, in addition to being able to see it while looking through a long enough colum...
- Thu Sep 12, 2024 6:22 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Young Star Cluster NGC 1333 (2024 Sep 12)
- Replies: 6
- Views: 967
Re: APOD: Young Star Cluster NGC 1333 (2024 Sep 12)
On the lower right, is this a planetary disk seen edge-on ? It is clearly a disk of some sort. APOD 12 September 2024 detail.png I'd say it's the the accretion disk, or the remnant of the accretion disk, around a young star. No obvious signs of planet formation can be seen at this resolution and ma...
- Mon Sep 09, 2024 3:45 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Mars: Moon, Craters, and Volcanos (2024 Sep 09)
- Replies: 6
- Views: 707
- Sat Sep 07, 2024 8:18 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Small Moon Deimos (2024 Sep 07)
- Replies: 3
- Views: 660
Re: APOD: Small Moon Deimos (2024 Sep 07)
Both Martian moons were discovered in 1877 by Asaph Hall , an American astronomer working at the US Naval Observatory in Washington D.C. But their existence was postulated around 1610 by Johannes Kepler , the astronomer who derived the laws of planetary motion. In this case, Kepler's prediction was...
- Sat Sep 07, 2024 12:59 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Ringed Ice Giant Neptune (2024 Sep 06)
- Replies: 8
- Views: 934
Re: APOD: Ringed Ice Giant Neptune (2024 Sep 06)
Thanks, guys (AVAO, Chris and Ann).
- Fri Sep 06, 2024 3:53 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Ringed Ice Giant Neptune (2024 Sep 06)
- Replies: 8
- Views: 934
Re: APOD: Ringed Ice Giant Neptune (2024 Sep 06)
So, Neptune's atmospheric methane both absorbs infrared (getting warmer I suppose), and then also emits infrared that is visible to JWST here? Or is it only the "High altitude clouds that reach above most of Neptune's absorbing methane" that we are seeing here? (And that also must be emitt...
- Tue Sep 03, 2024 4:07 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Quarter Moon and Sister Stars (2024 Sep 03)
- Replies: 18
- Views: 1900
Re: APOD: Quarter Moon and Sister Stars (2024 Sep 03)
As for the Nebra Sky Disk, sadly, the ridged circular arc at the bottom is apparently not the mirror from a long lost reflecting telescope, but the "solar boat" of the Sun deity! The Sun was sometimes envisioned as traveling through the sky in a boat. A prominent example is the solar barqu...
- Tue Sep 03, 2024 3:33 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Quarter Moon and Sister Stars (2024 Sep 03)
- Replies: 18
- Views: 1900
Re: APOD: Quarter Moon and Sister Stars (2024 Sep 03)
Except in this case it's three quarters of the way through a full cycle. It's a waning moon. Well, it marks one of the four natural quarter positions around the circle of moon phases. But I phrased it badly in my first post. I think that calling this a "quarter moon", as phrased in the ca...
- Tue Sep 03, 2024 3:19 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Quarter Moon and Sister Stars (2024 Sep 03)
- Replies: 18
- Views: 1900
Re: APOD: Quarter Moon and Sister Stars (2024 Sep 03)
It was a "third quarter moon". Not "quarter" by itself, and certainly commonly called "half". I think of it as although it's face is half lit from our perspective, it's deemed a quarter moon since it's a quarter of the way through a full cycle of phases: https://c.tads...
- Tue Sep 03, 2024 3:17 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Quarter Moon and Sister Stars (2024 Sep 03)
- Replies: 18
- Views: 1900
Re: APOD: Quarter Moon and Sister Stars (2024 Sep 03)
I expected the link in the text to “eight successive” exposures to show those eight individual images instead of a picture of eight cats. Any explanation? It meant to be humorous. Yes, it's true, even astrophotographers and astronomers have a sense of humor. There are often such links to "cute...
- Tue Sep 03, 2024 1:43 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Quarter Moon and Sister Stars (2024 Sep 03)
- Replies: 18
- Views: 1900
Re: APOD: Quarter Moon and Sister Stars (2024 Sep 03)
Isn't that a half moon? It was a "third quarter moon". Not "quarter" by itself, and certainly commonly called "half". I think of it as although it's face is half lit from our perspective, it's deemed a quarter moon since it's a quarter of the way through a full cycle o...
- Mon Sep 02, 2024 8:33 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: A Triangular Prominence Hovers Over... (2024 Sep 02)
- Replies: 9
- Views: 1503
Re: APOD: A Triangular Prominence Hovers Over... (2024 Sep 02)
What a fascinating view are prominences of the sun in different shapes, that is a naturally occurring phenomenon of the sun that is overwhelmingly making us wonder what will happen next. Speaking of the sun's future, at present, the sun is getting nova and will get bigger in 3937 as Nostradamus pre...
- Mon Sep 02, 2024 5:00 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: A Triangular Prominence Hovers Over... (2024 Sep 02)
- Replies: 9
- Views: 1503
Re: APOD: A Triangular Prominence Hovers Over... (2024 Sep 02)
Well, start by considering the density. The density of a prominence is about the same as the density of Earth's atmosphere somewhere between 30 and 50 kilometers above the surface. (The pressure at that height is a fraction of a percent of the surface pressure. Not a hard vacuum, but pretty thin.) ...
- Mon Sep 02, 2024 3:37 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: A Triangular Prominence Hovers Over... (2024 Sep 02)
- Replies: 9
- Views: 1503
Re: APOD: A Triangular Prominence Hovers Over... (2024 Sep 02)
The " documented by NASA" link to the SDO movie that this clip was apparently processed from shows this (after rotating and flipping to match the APOD): traingular prominence on sun from SDO.jpg So, ignoring the intense heat that close to the Sun, if the Earth were embedded in this promin...
- Mon Sep 02, 2024 1:17 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: A Triangular Prominence Hovers Over... (2024 Sep 02)
- Replies: 9
- Views: 1503
Re: APOD: A Triangular Prominence Hovers Over... (2024 Sep 02)
The " documented by NASA" link to the SDO movie that this clip was apparently processed from shows this (after rotating and flipping to match the APOD): traingular prominence on sun from SDO.jpg So, ignoring the intense heat that close to the Sun, if the Earth were embedded in this promine...
- Fri Aug 30, 2024 2:24 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Southern Moonscape (2024 Aug 30)
- Replies: 9
- Views: 1599
Re: APOD: Southern Moonscape (2024 Aug 30)
In this picture I see little to no asymmetry in the craters that I would expect if the impactor hit at an angle other than 90 degrees to the surface. Now that I think of it, this seems to be common to most of the pictures I have seen of other cratered surfaces. Am I missing something? Or is it the ...