Starship Asterisk*

https://www.youtube.com/watch?v=uGzl6RG-8iY Aw! No picture today! New; for me! (solar magnetic reconnection!) Knowing about them; and being able to use that information; sounds complex to me! That's true there isn't 'an' astronomy picture today. It's actually a series of moving pictures! Sometimes ...

why can't Witch Head Nebula be an aging HH object (10 ky old) in the thick of giant stars' bubble wall? It is not the sort of environment I would expect: Candidates for pre-main sequence stars and some classic T-Tauri stars have been found deep within the nebula. Do I get it right: a star is welcom...

favorable circumstances for star formation well, why can't Witch Head Nebula be an aging HH object (10 ky old) in the thick of giant stars' bubble wall? It is not the sort of environment I would expect: Candidates for pre-main sequence stars and some classic T-Tauri stars have been found deep withi...

https://cdn.spacetelescope.org/archives/images/screen/opo9524a.jpg This jet (bottom image) from a young star bears a passing structural resemblance to the Witch Head Nebula. (The image is from https://esahubble.org/images/opo9524a/, and it suggests the jet is monodirectional.) Bottom image This vie...

https://upload.wikimedia.org/wikipedia/commons/2/24/Gina_Lollobrigida_Fata_Turchina.jpg As a Color Commentator (and a crazy lover of all things blue), I can't help noticing the the rather non-blue color of the Witch Head Nebula in the APOD. Why is the Witch Head so lacking of azure hues in this APO...

https://upload.wikimedia.org/wikipedia/commons/8/8a/Ride_a_cock_horse_to_Banbury_Cross_1_-_WW_Denslow_-_Project_Gutenberg_etext_18546.jpg Sorry to ride my hobby horse again, but this nebula looks neither 'creepy' nor like a witch. Your pareidolia is broken. Maybe you should have that looked at! ;-)...

https://www.youtube.com/watch?v=pWklR2PBfQU NASA Science Live:Scheduled for 3:00 PM Jan 24, 2022 What’s Next for the James Webb Space Telescope? <<The past month has been an exciting one for NASA’s James Webb Space Telescope — from launch in tropical French Guiana, to the two-week unfolding of this...

MarkBour wrote: ↑Sun Jan 23, 2022 10:35 pm
Telesto and Calypso are big enough that they're perturbing Tethys as well.

Saturn's mass is ~6 orders of magnitude greater than that of Tethys.

Tethys's mass is ~5 orders of magnitude greater than that of Telesto or Calypso.

Cousin Ricky wrote: ↑Sun Jan 23, 2022 3:51 pm
So, you’re saying I should look at the Moon without my glasses?

• Or vice versa.

https://upload.wikimedia.org/wikipedia/commons/7/7f/Animation_of_Polydeuces%27s_orbit_relative_to_Saturn_and_Dione.gif Telesto (24 kilometers, or 15 miles across) shares the orbit of Saturn's moon Tethys (1,071 kilometers, or 665 miles across), leading the larger moon in its path by 60 degrees. Sim...

Ann wrote: ↑Sun Jan 23, 2022 4:42 am
"Bork, bork, bork!" is an example of the Swedish chef's own personal use of the Swedish language.

It's a shame that they didn't monitor his ear jets in false color IR.

https://www.youtube.com/watch?v=Ctv0x3jWQM8 And I had no idea what your first " Word!!! " was meant to imply. Hey, maybe that was just my own personal use of the English language going for a walk in the park. Ann's use of "word" as an interjection to express vehement agreement i...

how come they map a longer wavelength to blue and a shorter wavelength to orange? Word!!! And thanks, Victor, I prefer your color scheme. And you said that you didn't care: So what do the colors of the APOD mean? Don't ask me. I have no idea. All I'm sure of is that the colors are not "true&qu...

I was never able to picture a face in the Moon until I saw it explained in detail in a book, meticulously matching lunar maria to facial features. And now, in the years since I read that book, I just can't see the face any more. Higher contrast plus lower resolution helps: https://upload.wikimedia....

<<Eugene Schieffelin (January 29, 1827 – August 15, 1906) has been considered the primary person responsible for introducing the European starling (Sturnus vulgaris) to North America. Schieffelin was the seventh son of Henry Hamilton Schieffelin (1783–1865) and Maria Theresa (née Bradhurst) Schieff...

Band . . . Wave-length ------------------------------- H 2 (1-0). . 2.122 μm K. . . . . . 1.635 μm how come they map a longer wavelength to blue and a shorter wavelength to orange? https://www.youtube.com/watch?v=UAJEbuTBodI Word!!! And thanks, Victor, I prefer your color scheme. And you said that ...

So what do the colors of the APOD mean? Don't ask me. I have no idea. All I'm sure of is that the colors are not "true" or optical ones... <<The Gemini South Adaptive Optics Imager (GSAOI) is a near-infrared adaptive optics camera used with the Gemini Multi-conjugate Adaptive Optics Syste...

This isn't : 169 = [14]. This IS : 169 => Sum of proper factors 1 & 13 = [14]. It all involves a generalization of the classical concept of: A perfect number like: 28 => Sum of proper factors 1, 2, 4, 7 & 14 = [28]. In this [sum of proper factors] evolving universe: All primes => [1]. All p...

My bad... correction : 1489 is a prime number . The only proper factors of the square of a prime number p are: 1 & p. Hence, p 2 => [1 + p] I'm not even sure what that means, again take p=13 ... 169 => [14] ??? This isn't : 169 = [14]. This IS : 169 => Sum of proper factors 1 & 13 = [14]. I...

1489 is a prime number . The only proper factors of the square of a prime number p are: 1 & p. Hence, [1+p 2 ] => [1 + p] I don't think that follows. For example, let p = 13 [170] ??? [14} And more than that, for 1489 in particular, 1+1489*1489=2217122, the factors of that are {2, 1108561}, and...

Most high resolution deep field galaxy images comparable to this show up a menagerie of more distant galaxies. But I could only find a few few dim distant spiral candidates. Have these more distant been edited out? Is this an artifact of Andromeda covering such an expanse? Or are we looking in the ...

More cool stuff. But what do you mean by "[1+1489 2 ] => 1490 => {1210 <=> 1184})"? That if you start with 1+1489 2 = 2,217,122 and find its factors and add them, and continue that process, that you will eventually end in the {1210 <=> 1184} amicable pair? If so, that seems hard to believ...

https://www.youtube.com/watch?v=kKVV23LAkRo Explanation: Hot, young stars and cosmic pillars of gas and dust seem to crowd into NGC 7822. At the edge of a giant molecular cloud toward the northern constellation Cepheus, the glowing star forming region lies about 3,000 light-years away. Within the n...