Search found 443 matches
- Wed Dec 28, 2022 7:38 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Messier 88 (2022 Dec 28)
- Replies: 9
- Views: 3490
Re: APOD: Messier 88 (2022 Dec 28)
https://apod.nasa.gov/apod/calendar/S_221228.jpg Messier 88 Explanation: Charles Messier described the 88th entry in his 18th century catalog of Nebulae and Star Clusters as a spiral nebula without stars. [snip] Messier never used the word “spiral”; his exact words were “Nébuleuse sans étoile.” Spi...
- Mon Dec 26, 2022 4:48 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Geminids and the Mittens (2022 Dec 25)
- Replies: 5
- Views: 2080
Re: APOD: Geminids and the Mittens (2022 Dec 25)
It’s happened again. Someone, somewhere posted a mnemonic for me to remember which star is Pollux and which star is Castor. As always, I have forgotten the mnemonic, and do not remember which star is which. I just read the damn description, and in the few seconds since, I have completely forgotten w...
- Sun Dec 18, 2022 3:00 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: 25 Brightest Stars in the Night Sky (2022 Dec 18)
- Replies: 23
- Views: 297918
Re: APOD: 25 Brightest Stars in the Night Sky (2022 Dec 18)
I created this simulation, based on the stars’ B – V indices, a few months before the IAU made the names official. I assumed a white point of D65, so the moderately blue stars look less blue than in Mr. Jittasaiyapan’s montage. garnet_star-norm.png Sorry, Ann, I was looking specifically at the Garne...
- Sun Dec 18, 2022 2:21 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: 25 Brightest Stars in the Night Sky (2022 Dec 18)
- Replies: 23
- Views: 297918
Re: Three of the 25 Brightest Stars are in Crux
Same from the Virgin Islands. The 5 stars in Centaurus and Crux are the lowest, with Acrux culminating 9° above my horizon.Jim Fenner wrote: ↑Sun Dec 18, 2022 10:12 am Also not meaning to boast, but from the latitude of Sydney, all these stars are visible in the course of a year.
Capella, Vega and Deneb do suffer from low altitude
- Mon Oct 31, 2022 1:08 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Night on a Spooky Planet (2022 Oct 30)
- Replies: 4
- Views: 2479
Re: APOD: Night on a Spooky Planet (2022 Oct 30)
Aurorae can be (and have been?) seen by only 2% of human beings. I suppose that may be why photographs of them are so popular, but I would guess that APOD pics of them are way more than 2% of the total historically.. That’s a strange criterion for selecting APOD photos. Total solar eclipses are see...
- Sun Oct 30, 2022 2:14 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Night on a Spooky Planet (2022 Oct 30)
- Replies: 4
- Views: 2479
Re: APOD: Night on a Spooky Planet (2022 Oct 30)
Not bloody likely.APOD Robot wrote: ↑Sun Oct 30, 2022 4:05 am And pretty soon, ghostly shapes may dance in your neighborhood too.
- Thu Oct 27, 2022 11:22 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Sunset, Moonset, Taj Mahal (2022 Oct 27)
- Replies: 4
- Views: 2206
Re: APOD: Sunset, Moonset, Taj Mahal (2022 Oct 27)
Excellent composition!
- Mon Oct 24, 2022 11:53 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Expanding Plume from DART's Impact (2022 Oct 05)
- Replies: 14
- Views: 11995
Re: APOD: Expanding Plume from DART's Impact (2022 Oct 05)
What’s up with this? The video as posted is too large to fit on my screen, so I chose Watch on YouTube, but all I get are right wing propaganda shorts. YouTube Shorts is broken. Since the day this APOD was posted, when I click on a YouTube Short, I almost always get a totally random video, and have...
- Sat Oct 22, 2022 2:14 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: NGC 1499: The California Nebula (2022 Oct 22)
- Replies: 13
- Views: 3210
Re: APOD: NGC 1499: The California Nebula (2022 Oct 22)
The California Nebula shines with the telltale reddish glow characteristic of hydrogen atoms recombining with long lost electrons... Most likely providing the energetic starlight that ionizes much of the nebular gas is the bright, hot star Xi Persei just to the right of the nebula. This means that ...
- Wed Oct 05, 2022 5:48 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Expanding Plume from DART's Impact (2022 Oct 05)
- Replies: 14
- Views: 11995
Re: APOD: Expanding Plume from DART's Impact (2022 Oct 05)
What’s up with this? The video as posted is too large to fit on my screen, so I chose Watch on YouTube, but all I get are right wing propaganda shorts.
- Tue Sep 06, 2022 1:23 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: An Iridescent Pileus Cloud over China (2022 Sep 06)
- Replies: 8
- Views: 4137
Re: APOD: An Iridescent Pileus Cloud over China (2022 Sep 06)
I don't see anything above the pileus cloud except blue sky.APOD Robot wrote: ↑Tue Sep 06, 2022 4:05 am Also captured were unusual cloud ripples above the pileus cloud.
- Tue Aug 23, 2022 2:09 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Meteor & Milky Way over the... (2022 Aug 23)
- Replies: 14
- Views: 6425
Re: APOD: Meteor & Milky Way over the... (2022 Aug 23)
My father did the same, though perhaps not as extensively as Mr. Looten.APOD Robot wrote: ↑Tue Aug 23, 2022 4:05 amWhat you can't see is that, on this night, the astrophotographer brought along his father who, although unskilled in modern sky-capture techniques, once made it a point to teach his child about the sky.
- Sat Jul 16, 2022 4:32 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Tycho and Clavius at Dawn (2022 Jul 16)
- Replies: 13
- Views: 4263
Re: APOD: Tycho and Clavius at Dawn (2022 Jul 16)
This confused me as well. It would have been helpful to explain in the description that this is a mirror image.
Artistic license?xdm wrote: ↑Sat Jul 16, 2022 10:02 am Why present a mirror image, by the way
- Sat Jun 25, 2022 3:34 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Planets of the Solar System (2022 Jun 25)
- Replies: 46
- Views: 11648
Re: APOD: Planets of the Solar System (2022 Jun 25)
I have questions about Uranus and Neptune. I was barely able to pick out Neptune with averted vision in a binocular last night, and it was next to a brighter star. There’s no way it could have been as bright as in this photo without a whole bunch of stars showing. I haven’t seen Uranus yet—I haven’t...
- Sun Jun 19, 2022 3:55 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Game: Super Planet Crash (2022 Jun 19)
- Replies: 9
- Views: 2374
Re: APOD: Game: Super Planet Crash (2022 Jun 19)
The game literally does not fit on my computer screen.
- Tue Jun 14, 2022 7:45 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Find the Man in the Moon (2022 Jun 12)
- Replies: 15
- Views: 4293
Re: APOD: Find the Man in the Moon (2022 Jun 12)
That’s what I always see.Guest wrote: ↑Tue Jun 14, 2022 10:31 amRabbit!
- Sun Jun 12, 2022 3:40 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Find the Man in the Moon (2022 Jun 12)
- Replies: 15
- Views: 4293
- Sun Jun 12, 2022 3:38 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Find the Man in the Moon (2022 Jun 12)
- Replies: 15
- Views: 4293
Re: APOD: Find the Man in the Moon (2022 Jun 12)
That’s the first time I’ve ever seen the Man in the Moon delineated that way. And it seems rather selective and arbitrary from among all the dark markings on the Moon.
Sometimes I wonder if all the “Man in the Moon” talk is a worldwide conspiracy to personally gaslight me. I just don’t see it.
Sometimes I wonder if all the “Man in the Moon” talk is a worldwide conspiracy to personally gaslight me. I just don’t see it.
- Tue May 31, 2022 10:18 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: What did you see in the sky tonight?
- Replies: 1303
- Views: 1080899
Re: What did you see in the sky tonight?
Did anyone else see meteors last night? It was a good night for them! I looked out my front door shortly after 12:30 last night, and it was immediately clear that I wouldn’t see anything over the neighborhood streetlights. So I got dressed and drove to an unlit scenic lookout. There was no meteor s...
- Sun Apr 03, 2022 6:53 pm
- Forum: Open Space: Discuss Anything
- Topic: neufer Memorial
- Replies: 21
- Views: 37509
- Mon Mar 28, 2022 10:55 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Gems of a Maldivean Night (2022 Mar 28)
- Replies: 21
- Views: 12146
Re: APOD: Gems of a Maldivean Night (2022 Mar 28)
"Seen from Alpha Centauri, our own Sun would be a bright yellowish star in the otherwise recognizable constellation Cassiopeia." Is this really saying the Cassiopeia would look about the same to us if we were standing on a planet around Alpha Centauri? At first think, that seems like it w...
- Mon Mar 28, 2022 6:09 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Gems of a Maldivean Night (2022 Mar 28)
- Replies: 21
- Views: 12146
- Mon Mar 28, 2022 1:34 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Gems of a Maldivean Night (2022 Mar 28)
- Replies: 21
- Views: 12146
Re: APOD: Gems of a Maldivean Night (2022 Mar 28)
Fun fact: Alpha Centauri A is the same spectral class as the Sun, and Alpha Centauri B is cooler. Therefore, if we could see it at a distance, the Sun would appear no more yellow than Alpha Centauri.
- Mon Mar 28, 2022 1:28 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Gems of a Maldivean Night (2022 Mar 28)
- Replies: 21
- Views: 12146
Re: APOD: Gems of a Maldivean Night (2022 Mar 28)
I can barely make out the stars of Chamaeleon, and they looked too close to the horizon for the south celestial pole to be visible. To rule out camera lens distortion, I looked up Madivaru’s latitude. It is 4.5° north. The south celestial pole cannot be above the island in this picture.
- Tue Mar 22, 2022 9:15 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: A Whale of an Aurora over Swedish Forest (2022 Mar 22)
- Replies: 21
- Views: 11440
Re: APOD: A Whale of an Aurora over Swedish Forest (2022 Mar 22)
I see a raptor with outstretched wings. I cannot make out a whale.