Search found 567 matches

by AVAO
Mon Feb 14, 2022 2:49 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: In the Heart of the Heart Nebula (2022 Feb 14)
Replies: 11
Views: 8173

Re: APOD: In the Heart of the Heart Nebula (2022 Feb 14)

Did anyone notice the pink ring at the top of the image and if there is a designation for it? Good question! WeBo 1 is a planetary nebula in the Heart Nebula and thus in the constellation of Cassiopeia, named after its discoverers Ronald F. Webbink and Howard E. Bond. The planetary nebula is formed...
by AVAO
Sun Feb 06, 2022 9:24 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Blue Marble Earth (2022 Feb 06)
Replies: 11
Views: 4212

Re: APOD: Blue Marble Earth (2022 Feb 06)

A "current" view of today's water planet can be found at https://earth.google.com/web/@-18.81240919,-153.47919845,-23611.46803364a,22275363.15610171d,35y,0h,0t,0r The cloud picture is almost live. A real view (Aug 7, 2017) from NASA can be found at https://www.nasa.gov/multimedia/imagegall...
by AVAO
Sun Jan 09, 2022 2:50 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Hubble's Jupiter and the Shrinking... (2022 Jan 09)
Replies: 26
Views: 6574

Re: APOD: Hubble's Jupiter and the Shrinking... (2022 Jan 09)

I like this animation: Voyager 1 fly by https://upload.wikimedia.org/wikipedia/commons/a/a3/790106-0203_Voyager_58M_to_31M_reduced.gif The Great Red Spot is a vortex between two rotating segments of a circle. As can be seen in the animation, the upper segment of the circle rotates in opposite direct...
by AVAO
Sun Dec 26, 2021 6:12 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: James Webb Space Telescope over Earth (2021 Dec 26)
Replies: 47
Views: 14110

Re: APOD: James Webb Space Telescope over Earth (2021 Dec 26)

Hey JWST - Welcome to the Universe! ...but if everything goes well, in summer 22 there is a lot of work waiting for you. In Cycle 1 the following missions are scheduled: 70 Exoplanets & Discs 75 Galaxies 3 Intergalactic Medium and the Circumgalactic Medium 9 Large Scale Structure of the Universe...
by AVAO
Tue May 26, 2020 7:43 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Mystic Mountain Monster being Destroyed (2020 May 25)
Replies: 9
Views: 3323

Re: APOD: Mystic Mountain Monster being Destroyed (2020 May 25)

The stars being born in the Mystic Mountain strikes me as typical triggered formation of second generation stars. These stars form at the top of pillars, which are being compressed and eroded away by the strong stellar wind and onslaught of ultraviolet light of pre-existing massive stars. Good exam...
by AVAO
Mon May 18, 2020 8:46 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Journey into the Cosmic Reef (2020 May 18)
Replies: 50
Views: 20004

Re: APOD: Journey into the Cosmic Reef (2020 May 18)

From where does the assumption come that, viewed from the side, it is an hourglass shape? This is typical for planetary nebulae, but not espacially for Wolf-Rayet stars?
by AVAO
Sat May 16, 2020 4:42 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: The Dark River to Antares (2020 May 16)
Replies: 16
Views: 4211

Re: APOD: The Dark River to Antares (2020 May 16)

ThanX GeoXXXXX The Spotty Surface of Betelgeuse https://apod.nasa.gov/apod/image/1001/Betel_haubois800.jpg "The intriguing picture shows two, large, bright, star spots. The spots potentially represent enormous convective cells rising from below the supergiant's surface." APOD 2010 January ...
by AVAO
Fri May 15, 2020 3:53 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Galaxy Wars: M81 and M82 (2020 May 15)
Replies: 26
Views: 6719

Re: APOD: Galaxy Wars: M81 and M82 (2020 May 15)

"Thank, Jac, that's a very nice image! :D I much appreciate being able to see the Hα in the core of NGC 3077. I'm also very glad to see that the picture was taken by a woman, Hypatia Alexandria! :D Ann" Indeed. This is true today as in the past. In honor of ... Hypatia from Alexandria (Gre...
by AVAO
Fri May 15, 2020 11:54 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Galaxy Wars: M81 and M82 (2020 May 15)
Replies: 26
Views: 6719

Re: APOD: Galaxy Wars: M81 and M82 (2020 May 15)

"There are some interesting similarities between NGC 3077 and M82, the famous "red-gas-spitting" neighboring galaxy of M81. Both M82 and NGC 3077 have stopped forming stars almost everywhere except in their cores, which, however, are ablaze with brilliant star formation. Clearly inter...
by AVAO
Fri May 15, 2020 10:32 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Galaxy Wars: M81 and M82 (2020 May 15)
Replies: 26
Views: 6719

Re: APOD: Galaxy Wars: M81 and M82 (2020 May 15)

"Locked in gravitational combat," really? So tired of the overuse of war metaphors especially when another would be so easy to find. "They've been dancing together for a billion years - spurring creation and complexity in one another, someday to unite." "They've been slidin...
by AVAO
Sun May 10, 2020 7:24 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: The Porpoise Galaxy from Hubble (2020 May 10)
Replies: 14
Views: 3759

Re: APOD: The Porpoise Galaxy from Hubble (2020 May 10)

Wow. Great Picture! For me, it looks as if the "dust body" in the foreground has almost completely separated from the "star body" in the background. Does anyone have a physical explanation for this? "If you are lost in space and time - stay cool - and do it with love!"...
by AVAO
Sun May 10, 2020 9:27 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: The Porpoise Galaxy from Hubble (2020 May 10)
Replies: 14
Views: 3759

Re: APOD: The Porpoise Galaxy from Hubble (2020 May 10)

Wow. Great Picture! For me, it looks as if the "dust body" in the foreground has almost completely separated from the "star body" in the background. Does anyone have a physical explanation for this? "If you are lost in space and time - stay cool - and do it with love!" ...
by AVAO
Thu Apr 30, 2020 8:20 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Andromeda Island Universe (2020 Apr 30)
Replies: 9
Views: 2990

Re: APOD: Andromeda Island Universe (2020 Apr 30)

It looks like the core (the eye in the middle) is turning towards us... I think he is preparing for a fight ;-) look at: https://apod.nasa.gov/apod/image/0510/m31red_spitzer_big.jpg https://apod.nasa.gov/apod/image/0510/m31red_spitzer.jpg For explanation: NASA's Hubble Shows Milky Way is Destined fo...
by AVAO
Sat Nov 16, 2019 5:50 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: The Star Streams of NGC 5907 (2019 Nov 16)
Replies: 12
Views: 3649

Re: APOD: The Star Streams of NGC 5907 (2019 Nov 16)

Brilliant picture! The explanation makes me doubt. If the stellar streams come from an earlier dwarf galaxy, it is illogical that there are no obvious traces of the previous battle, if they come from a small galaxy that has been torn apart and already "digested". There are neither new and ...
by AVAO
Tue Oct 15, 2019 6:56 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: The Galaxy Above (2019 Oct 15)
Replies: 14
Views: 9844

Re: APOD: The Galaxy Above (2019 Oct 15)

Congratulation, beautiful picture!

I would be interested to know why two images had to be overlaid?
Why it was not possible at one time?
by AVAO
Wed Oct 02, 2019 5:29 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Molecular Clouds in the Carina Nebula (2019 Oct 02)
Replies: 26
Views: 8950

Re: APOD: Molecular Clouds in the Carina Nebula (2019 Oct 02)

Caterpillar!!! I love it! :D And the many-peded thing seems to be looking at a cosmic bunny rabbit in wild flight! Look at the white behind and the two dark hind legs, as the cosmic lepus is trying to get away! Ann ... or Milnesium tardigradum in space (water bear). like it https://upload.wikimedia...
by AVAO
Tue Oct 01, 2019 9:59 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: MyCn 18: The Engraved Hourglass... (2019 Sep 29)
Replies: 25
Views: 9908

Re: APOD: MyCn 18: The Engraved Hourglass... (2019 Sep 29)

Below I try to compare a close-up from the core with the ring nebula. I think these type of planetary nebula are missing the hourglass ejection surfaces, as they have already dissolved. Therefore you can only see the central ring. The typical eye-like formation in the case of MyCn 18 results from t...
by AVAO
Sun Sep 29, 2019 10:47 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: MyCn 18: The Engraved Hourglass... (2019 Sep 29)
Replies: 25
Views: 9908

Re: APOD: MyCn 18: The Engraved Hourglass... (2019 Sep 29)

Below I try to compare a close-up from the core with the ring nebula. I think these type of planetary nebula are missing the hourglass ejection surfaces, as they have already dissolved. Therefore you can only see the central ring. The typical eye-like formation in the case of MyCn 18 results from th...
by AVAO
Tue Jul 09, 2019 5:48 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: The Galactic Center in Radio from... (2019 Jul 08)
Replies: 10
Views: 5149

Re: APOD: The Galactic Center in Radio from... (2019 Jul 08)

One tiny thing that I find interesting is that there appear to be three smilar-sized supernova remnants to the left of Sagittarius A*, and two much larger and therefore older supernova remnants to the right of it. I assume that the sites of star formation near Sgr A* has shifted over time. Usually,...
by AVAO
Thu Jun 20, 2019 8:48 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: A View Toward M106 (2019 Jun 20)
Replies: 12
Views: 5007

Re: APOD: A View Toward M106 (2019 Jun 20)

The "blurrier" the picture is, the harder it is to tell the difference between stars and galaxies. In today's APOD there are no long spikes emanating from the stars, which makes it even harder to tell them from elliptical or face-on spiral galaxies. Instead of spikes, there is a multitude...
by AVAO
Thu Jun 20, 2019 7:43 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: A View Toward M106 (2019 Jun 20)
Replies: 12
Views: 5007

Re: APOD: A View Toward M106 (2019 Jun 20)

Sorry if I've already asked this in the past. Whenever I look at such photos, I always wonder, which one of the bright objects (of various sizes, shapes and colors) we see are stars and which ones are galaxies. There are some photos wherein every object (almost every) is a galaxy. But, some have a ...
by AVAO
Wed Jun 19, 2019 7:49 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Our Galaxy's Magnetic Center (2019 Jun 19)
Replies: 11
Views: 5088

Re: APOD: Our Galaxy's Magnetic Center (2019 Jun 19)

Where exactly is Sag A* (our galaxy's supermassive BH) in this image? An X marks the spot overlay would be very helpful, along with a dashed line showing the Milky Way's mid plain. To your question look at: https://instagram.fzrh3-1.fna.fbcdn.net/vp/8eb9dcd630955e9512bf042bffabf438/5D90398F/t51.288...
by AVAO
Sun Jun 16, 2019 7:27 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Unusual Mountain Ahuna Mons on Ceres... (2019 Jun 16)
Replies: 21
Views: 12271

Re: APOD: Unusual Mountain Ahuna Mons on Ceres... (2019 Jun 16)

Not a word about the odd hexagonal highlighted object? Good question... Normally, these patterns exist only at the poles of the planets. However, I think that it is unlikely that the hexagon surrounded by the red is the former pole territory... https://instagram.fzrh3-1.fna.fbcdn.net/vp/efac3daa81e...
by AVAO
Sun Jun 16, 2019 9:50 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Unusual Mountain Ahuna Mons on Ceres... (2019 Jun 16)
Replies: 21
Views: 12271

Re: APOD: Unusual Mountain Ahuna Mons on Ceres... (2019 Jun 16)

ThanX Ann Interesting point. But where are the wildebeests on Ceres ?-) Okey, with -106 degrees, it is a little cold. But where does the heat come from to make the soda-carbonate liquid? Maybe it was different there earlier. So I'm sure, we will find a couple of wildebeest bones on the next expediti...