Starship Asterisk*

https://apod.nasa.gov/apod/calendar/S_220606.jpg Milky Way Galaxy Doomed: Collision with Andromeda Pending Given that to our eyes we only see the central part of Andromeda, and it's about the same brightness as the Milky Way, I'd expect this view to have both components look similar (and to our eye...

Love that GIF, AVAO! I knew of the helical motion of the planets in the solar system as the Sun drags them along, of course, but the GIF looks stunning, anyway. But surely there is a difference between a system of two black holes orbiting each other and planets orbiting the Sun? Yes, I know that te...

. . . I'm not sure if the assumption "two supermassive black holes are bound together by gravity in a binary system" can be correct, because otherwise it would be expected that the two double tails of the black holes moving in the same direction would have to twist helically against each ...

Explanation: What's happening at the center of active galaxy 3C 75?.. I think this is wrong. 3C 75 is not a description for a galaxy... Wikipedia quote: ..3C 75 is a binary black hole system .. in the dumbbell shaped galaxy NGC 1128... https://en.wikipedia.org/wiki/3C_75 I think the description in ...

Regarding the resolution of the engineering-picture from JWST, where several think it's low: It has to do with wave-length. It's unfair to compare a picture taken in the UV-Visible range(where Hubbel opperates), and compare it directly with an image taken in the deeep part of the IR. The diameter o...

"We report the discovery of a solar-type star in a close, eccentric binary system with a neutron star within the young Galactic supernova remnant RCW 86. Our discovery implies that the supernova progenitor was a moving star, which exploded near the edge of its wind bubble and lost most of its ...

...That's why these supernovas leave no neutron stars behind, because the progenitor stars are like huge solar mass thermonuclear bombs 💣 waiting to explode 🎇 under the right circumstances. (The progenitor stars of core-collapse supernovas, by contrast, have "dead" iron cores that can't b...

https://upload.wikimedia.org/wikipedia/commons/thumb/c/cc/NGC_4565_-_Spitzer.png/800px-NGC_4565_-_Spitzer.png?20201206170519 As you can see, the dusty disk (shown in red) is clumpy. Such clumpiness suggests the presence of young star clusters and even ongoing star formation. Ann Good point! All rig...

Let me begin by passing a verdict: NGC 4565 is a quite yellow galaxy ███ , and not very colorful at all. Ann I totally agree with you. Today's APOD image is too colorful looking at the blue and red ends. In reality the galaxy is probably very similar to NGC 4594 (Sombrero Galaxy) and also quite ina...

This star-filled image, taken by Hubble in near-infrared wavelengths of light (right side), reveals a very different view of the Lagoon Nebula compared to its visible-light portrait. The observations were taken by Hubble’s Wide Field Camera 3 (WFC3) instrument between February 12 and 18, 2018. Imag...

My point is that I don't expect the stars near the center of the Lagoon Nebula to be reddened by the same amount. But they do, indeed, look about equally red. My guess is that these stars have been detected by one and the same infrared filter, and therefore the huge majority of them appear to be th...

This picture[/url], spanning about 10 light years, combines images taken in six colors by the orbiting Hubble Space Telescope . I think it would be better to talk about wavelengths instead of colors here. the stars are "borrowed" from the near infrared and many of them would probably not ...

why is the IR frame of the two-frame video monochromatic? Spitzer Space Telescope must be capturing more than one spectral band channel of data, must not it? What additional value would combining IR channels provide? The intent it to highlight the dust, and a single channel would seem to be best fo...

https://upload.wikimedia.org/wikipedia/en/f/f6/MoretonWaveAnimation200612.gif https://upload.wikimedia.org/wikipedia/en/f/f6/MoretonWaveAnimation200612.gif I find it difficult to interpret the animation correctly. On the one hand, I see a linear flare-up along a "stress front" with an irr...

I think that many of the faint white dots seen scattered over the face of NGC 1316 in the Hubble image are globulars. My guess is that some of the brighter white dots are not globulars, but foreground stars, and that goes for more than the obvious star "above" the most prominent dust lane...

As I understand the situation, the two clouds are approaching each other or will merge in the future. But why the gas and the star connecting strands occur separated? (blue & white lines) I first found this picture on a site where the size of the picture was ridiculously large, almost 8 MB. Yik...

Perhaps some of them could be at the same distance to us as Sgr A*, to the east or left of Sgr A*? Ann Couldn't some of the stars in the larger image Be more than 2000 AU from the black hole, but less than a few light-years? Sure. But like I asked, so what? And what does that have to do with the or...

(I know you're aware that the SMB is too small to be seen. I was just pointing out how incredibly small, at 1% of a single pixel.) It's really incredibly small... https://live.staticflickr.com/65535/52071356583_8827c0d40c_m.jpg 100'000LY https://live.staticflickr.com/65535/52070304432_ccdc4251d1_m....

Ann wrote: ↑Thu May 12, 2022 5:42 am

The Large and Small Magellanic Clouds and the bridge connecting them. Image credit: V. Belokurov / D. Erkal / A. Mellinger.

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Ann

As I understand the situation, the two clouds are approaching each other or will merge in the future. But why the gas and the star connecting strands occur separated? (blue & white lines)

i like halloween too :evil: Chandra reveals that the right eye is the central galaxy. Hubble reveals that this has a double core, or two elliptical galaxies are in close merger. If these are part of the gravitational center, they must be very "heavy", which in my logic would mean that they...

Nuclear rings like the one in NGC 1512 are not common, but they are certainly not unheard of, either. Ann ...Galaxies wrap their arms around and form ring-like structures all the time... Geck's idea from the legendary APOD discussion to Hoag's Object (2019 Nov 27) convinces me. I think "intert...

A very similar galaxy, "Hoag's Object" has featured many times on APoD, most recently https://apod.nasa.gov/apod/ap191127.html I've never seen a picture of Hoag with as much resolution as this one. Has Hubble ever imaged Hoag? The structures seen within NGC1512 and the blurb (which I have...

"Burning"? I think the JWST will reveal that much more stars have tails of dust than we think. And in many cases these will only be visible in the IR and with a high IR sensitivity of the instrument. The question for me is what is the reason for this? When stars start to develop strong &q...

What does a black hole look like? ... 1:4 - Maybe the Donat will get legs in the future too ;-) https://live.staticflickr.com/65535/52041764539_d203ddf498_m.jpg https://live.staticflickr.com/65535/52041764539_d203ddf498_b.jpg https://live.staticflickr.com/65535/52040472352_3c81b0b03f_m.jpg https://...

...., the cluster was not resolved into its individual stars until telescopes were available. JWST thinks that stars are burning :-) https://live.staticflickr.com/65535/52038429037_040d778470_z.jpg https://blogs.nasa.gov/webb/2022/04/28/nasas-webb-in-full-focus-ready-for-instrument-commissioning/ C...