Search found 23 matches

by MoonRockMan
Tue Apr 16, 2024 6:19 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: The Cigar Galaxy from Hubble and Webb (2024 Apr 15)
Replies: 26
Views: 4345

Re: APOD: The Cigar Galaxy from Hubble and Webb (2024 Apr 15)

"shows, unexpectedly, that this red-glowing dust is associated with hot plasma."

Is it unexpected because there is plasma inside stars, but this is plasma dust in between stars, as if chunks of plasma were blown out of stars?
by MoonRockMan
Wed Oct 11, 2023 7:16 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: NGC 1097: Spiral Galaxy with Supernova (2023 Oct 11)
Replies: 9
Views: 12073

Re: APOD: NGC 1097: Spiral Galaxy with Supernova (2023 Oct 11)

Any idea if the differences between the two images--apart from the supernova--are because of differences in sky conditions at the respective times or because of brightening from the nova? Nothing to do with the SN. It's just really difficult image processing to create two identical images of the sa...
by MoonRockMan
Wed Oct 11, 2023 5:32 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: NGC 1097: Spiral Galaxy with Supernova (2023 Oct 11)
Replies: 9
Views: 12073

Re: APOD: NGC 1097: Spiral Galaxy with Supernova (2023 Oct 11)

Any idea if the differences between the two images--apart from the supernova--are because of differences in sky conditions at the respective times or because of brightening from the nova?
by MoonRockMan
Fri Sep 16, 2022 8:48 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: The Tarantula Zone (2022 Sep 16)
Replies: 11
Views: 2865

Re: APOD: The Tarantula Zone (2022 Sep 16)

orin stepanek wrote: Fri Sep 16, 2022 2:51 pm Tarantula-HST-ESO-Webb-SS1024.jpg
Tarantula-HST-ESO-annotated1800.jpg
Tarantula has the largest star forming area in the local group! Wow!
That's quite something for a small Galaxy! 8-)
Thank you so much the for annotated image! That's great.
by MoonRockMan
Sun Sep 11, 2022 7:55 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Planets of the Solar System: Tilts... (2022 Sep 11)
Replies: 41
Views: 9059

Re: APOD: Planets of the Solar System: Tilts... (2022 Sep 11)

The way Jupiter's tilt is when spinning around its axis, would that mean that the Sun is low in the sky in the polar regions? Unless this is a trick question, the answer is yes! And the same goes for Mercury and Venus. All three rotate almost perpendicularly to the plane of their orbit around the S...
by MoonRockMan
Sun Sep 11, 2022 6:43 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Planets of the Solar System: Tilts... (2022 Sep 11)
Replies: 41
Views: 9059

Re: APOD: Planets of the Solar System: Tilts... (2022 Sep 11)

The way Jupiter's tilt is when spinning around its axis, would that mean that the Sun is low in the sky in the polar regions?
by MoonRockMan
Sun May 08, 2022 3:44 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Spiral Galaxy NGC 1512: The Inner Rings (2022 May 08)
Replies: 15
Views: 3881

Re: APOD: Spiral Galaxy NGC 1512: The Inner Rings (2022 May 08)

I'm wondering if there are any phenomena on Earth that generate spiral objects with bars. Not to my knowledge, and I don't think it is possible. After all, a spiral galaxy with a bar and a ring is a tremendously huge and dynamical system, whereas the Earth is a (comparatively) tiny ball of rock, wi...
by MoonRockMan
Sun May 08, 2022 5:35 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Spiral Galaxy NGC 1512: The Inner Rings (2022 May 08)
Replies: 15
Views: 3881

Re: APOD: Spiral Galaxy NGC 1512: The Inner Rings (2022 May 08)

I'm wondering if there are any phenomena on Earth that generate spiral objects with bars.
by MoonRockMan
Tue May 03, 2022 4:15 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Mercury's Sodium Tail (2022 May 03)
Replies: 10
Views: 6461

Re: APOD: Mercury's Sodium Tail (2022 May 03)

"Sunlight also liberates these molecules from Mercury's surface and pushes them away."

Is it possible that Mercury is becoming less and less of a planet (very, very, very slowly) over time because of this and other forces?
by MoonRockMan
Tue Apr 26, 2022 7:23 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Planet Parade over Sydney Opera House (2022 Apr 26)
Replies: 5
Views: 4035

Re: APOD: Planet Parade over Sydney Opera House (2022 Apr 26)

Why exactly is the line of planets mostly horizontal in the northern hemisphere but more vertical in the southern hemisphere? :) I wondered that myself, but I think it has to do with the difference between the Earth's equatorial plane and the ecliptic, the Earth's path around the Sun. (I say the ec...
by MoonRockMan
Tue Apr 26, 2022 5:06 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Planet Parade over Sydney Opera House (2022 Apr 26)
Replies: 5
Views: 4035

Re: APOD: Planet Parade over Sydney Opera House (2022 Apr 26)

Why exactly is the line of planets mostly horizontal in the northern hemisphere but more vertical in the southern hemisphere? :)
by MoonRockMan
Wed Mar 16, 2022 12:13 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: A Road to the Stars (2022 Mar 15)
Replies: 4
Views: 2723

Re: APOD: A Road to the Stars (2022 Mar 15)

Chris Peterson wrote: Tue Mar 15, 2022 10:43 pm
MoonRockMan wrote: Tue Mar 15, 2022 9:14 pm Am I correct that this is Saturn?

Image
Yup.
Thanks! Just double-checking myself :)
by MoonRockMan
Sat Feb 26, 2022 8:13 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Nearby Spiral Galaxy NGC 4945 (2022 Feb 26)
Replies: 12
Views: 4780

Re: APOD: Nearby Spiral Galaxy NGC 4945 (2022 Feb 26)

orin stepanek wrote: Sat Feb 26, 2022 12:34 pm NGC4945-Dietmar-Eric-crop.jpg
I'm curious if anyone has identified any of the other galaxies in the image, like the one highlighted here, for instance. Beyond my capabilities :)
by MoonRockMan
Wed Feb 02, 2022 5:35 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Galileo's Europa (2022 Jan 15)
Replies: 16
Views: 6840

Re: APOD: Galileo's Europa (2022 Jan 15)

Does anyone know what the scars/missing chunks at the bottom left of the image are? I presume you are referring to these: Depressions on Europa.JPG Not sure exactly, but they seem to be uncommon. Localized "sink holes" in the ice of some sort I guess. Exactly. They're intriguing; thanks f...
by MoonRockMan
Sun Jan 16, 2022 1:28 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Galileo's Europa (2022 Jan 15)
Replies: 16
Views: 6840

Re: APOD: Galileo's Europa (2022 Jan 15)

Does anyone know what the scars/missing chunks at the bottom left of the image are?
by MoonRockMan
Wed Jan 12, 2022 2:31 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Hubble's Jupiter and the Shrinking... (2022 Jan 09)
Replies: 26
Views: 7460

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

johnnydeep wrote: Tue Jan 11, 2022 4:22 pm
MoonRockMan wrote: Tue Jan 11, 2022 4:16 am
johnnydeep wrote: Mon Jan 10, 2022 3:03 pm

I suppose you must be referring to this unusually dark oblong spot?:


jupiter moon shadow.JPG
Exactly :ssmile:
You have very observant eyes!
Thank you! :) I've been told I'm observant, and it's hard not to stare at a beautiful picture like this one for a long time.
by MoonRockMan
Tue Jan 11, 2022 4:16 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Hubble's Jupiter and the Shrinking... (2022 Jan 09)
Replies: 26
Views: 7460

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

johnnydeep wrote: Mon Jan 10, 2022 3:03 pm
MoonRockMan wrote: Mon Jan 10, 2022 3:16 am
Karol Masztalerz wrote: Mon Jan 10, 2022 2:54 am
Yes, it is!
That pleases me :D Thank you for confirming
I suppose you must be referring to this unusually dark oblong spot?:


jupiter moon shadow.JPG
Exactly :ssmile:
by MoonRockMan
Mon Jan 10, 2022 3:16 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Hubble's Jupiter and the Shrinking... (2022 Jan 09)
Replies: 26
Views: 7460

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

Karol Masztalerz wrote: Mon Jan 10, 2022 2:54 am
MoonRockMan wrote: Mon Jan 10, 2022 12:08 am Is that one of the moon's shadows on the far left side?
Yes, it is!
That pleases me :D Thank you for confirming
by MoonRockMan
Tue Jan 04, 2022 5:45 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Comet Leonard's Long Tail (2022 Jan 03)
Replies: 10
Views: 4088

Re: APOD: Comet Leonard's Long Tail (2022 Jan 03)

Is there a possibility that the Earth may sweep through the tail at some point?