Starship Asterisk*

I should not be the first to review this APOD, because any photographer that has spent blood sweat and tears and many many hours to produce an astronomical image that has been chosen as an APOD deserves a fine review. So let me just say that I personally prefer another type of Trifid Nebula portrait...

Where is the smaller galaxy that is pulling on the arc? Or is the smaller galaxy already merged with M83? A quick googling turned up no info on a small galaxy pulling in M83. With the help of my software, I found a small galaxy, PGC 47885 or MCG-05-32-042, whose radial velocity is very similar to t...

Where is the smaller galaxy that is pulling on the arc? Or is the smaller galaxy already merged with M83? A quick googling turned up no info on a small galaxy pulling on M83. With the help of my software, I found a small galaxy, PGC 47885 or MCG-05-32-042, whose radial velocity is very similar to t...

Today's APOD shows a long stellar stream emanating from M83. (Unfortunately, the picture is so big that I have to post it as an attachment.) Ah yes, but there is still more to M83 than meets the eye in the APOD! DeepM83ThousandRubyGalaxy1024[1].jpg M83: Star Streams and a Thousand Rubies Image Credi...

ThanX Ann I feel honored. All my pictures have a CC license with attribution for free use. I do this... for pure fun and to challenge myself a little in the morning before I can dive back into my daily work routine. ... and of course also to be able to talk to you :wink: about exciting astronomical...

[...] Oh wow, that's an awesome awesome awesome image of the central star cluster of NGC 602, Jac! 😀 🤩 🥳 🐬 I'm so so so tempted to steal it from you and insert it into my own post, but I managed to restrain myself (just barely)! But I will upload it to my computer! Ann ThanX Ann I feel honored. All...

Of course, assuming technology to shield the ship from collisions with interstellar matter, the time it takes to get there (in theory) can be arbitrarily short (subject, as well, to the G-force limitations on whatever is inside the ship). Arbitrarily short from the reference frame of the ship, that...

https://apod.nasa.gov/apod/calendar/S_240702.jpg NGC 602: Oyster Star Cluster Explanation: The clouds may look like an oyster, and the stars like pearls, but look beyond. Near the outskirts of the Small Magellanic Cloud , a satellite galaxy some 200 thousand light-years distant, lies this 5 million...

Don't know how to reproduce the mouseover, so... https://upload.wikimedia.org/wikipedia/commons/thumb/8/81/NGC602.jpg/1049px-NGC602.jpg https://apod.nasa.gov/apod/image/2407/Ngc602_ChandraHubbleSpitzer_960.jpg As you can see, the X-ray sources (purple) are not coincident with the brightest stars of ...

Color me baffled. https://www.psu.edu/news/research/story/tiny-bright-objects-discovered-dawn-universe-baffle-scientists https://iopscience.iop.org/article/10.3847/2041-8213/ad55f7 I read the first article you linked to and I, too, am baffled. I'd say we should remain somewhat skeptical for the tim...

Spoiler! I was giving our math challenged friend an opportunity to work that out. Yeah, thanks... But thank you, Johnny, for working it out for me. Ann And quite coincidentally, I'm sure, 0.5° is almost exactly how "wide" the Moon appears in Earth's skies! (PS - I suspect Ann is not nearl...

Chris Peterson wrote: ↑Mon Jul 01, 2024 1:16 pm

johnnydeep wrote: ↑Mon Jul 01, 2024 1:09 pm

Chris Peterson wrote: ↑Mon Jul 01, 2024 12:59 pm

Well, yes, the Earth is rotating. But how much in just two minutes?

About 0.5° apparently, so not much!

Spoiler! I was giving our math challenged friend an opportunity to work that out.

Yeah, thanks... But thank you, Johnny, for working it out for me.

Ann

My computer was acting up yesterday, and I dislike using my mobile phone to comment on Starship Asterisk*, so I decided not to even try to comment. But I have a stupid amateur question. If the Earth was seen rising over the Moon, shouldn't the Earth also be seen to slowly rotate?

Ann

Hubble Space Telescope Views NGC 5253 with ACS / HRC NASA/ESA | Original release 2024 June 28 https://cdn.sci.news/images/2024/06/image_13041_1-NGC-5253.jpg GOTD4Y Jac https://live.staticflickr.com/65535/53824440101_c080f2a635_b.jpg https://live.staticflickr.com/65535/53823520912_49eb2163f2_b.jpg o...

Why do the white blob and the yellow blob appear to be windblown in opposite directions? The windblown white blob, by the way, is ever so slightly similar to Hubble's Variable Nebula . https://upload.wikimedia.org/wikipedia/commons/thumb/8/8b/Hubble%27s_Variable_Nebula_-_NGC_2261.png/290px-Hubble%2...

disk shadow 1 The disk around the intermediate-mass young star EC 82 casts a large shadow on surrounding reflection nebulosity, giving rise to the so-called “Great Serpens Disk Shadow” sh1.jpgsh1+.jpg https://asterisk.apod.com/download/file.php?id=49932&mode=view That's an impressive disk shado...

In Thule Greenland where I worked for a year the summer solstice full moon remains about 14.5 degrees below the horizon. When the Sun is high in the sky, in the summer, the Moon is low in the sky. Of course, the Sun is never high in the sky in (northern) Greenland, but during the summer solstice th...

Marvellous image, cosmic creation in full force! And we barely need to "surmise" what's going on, we see those new worlds forming! (even more so in AVAO's zoom-in link) Here is some context about the environment and the comparison between Optical and IR. Dynamic area up there ,-) https://...

https://apod.nasa.gov/apod/calendar/S_240627.jpg Protostellar Outflows in Serpens Explanation: Jets of material blasting from newborn stars, are captured in this James Webb Space Telescope close-up of the Serpens Nebula. The powerful protostellar outflows are bipolar, twin jets spewing in opposite ...

HST: NGC 3059 - A broad and narrow galactic view NASA/ESA | Original release 2024 June 3 https://cdn.esahubble.org/archives/images/screen/potw2423a.jpg A spiral galaxy seen face-on, so that its many arms and its glowing, bar-shaped core can be easily seen. The arms are filled with bluish patches of...

How large is a piece of the dust. Is it hot? If not, then there is no chance of it to conglomerate and form a star. Dust (and gas) needs to be cold - really very cold - in order to for gravity to make it sink into its own gravity well and become concentrated enough to eventually form a star. If the...

Note how the Doodad is leaking smoke along its entire length! https://apod.nasa.gov/apod/image/2406/Doodad_PughSung_1080.jpg Note in particular the dusty gusts of smoke that seem to surround globular cluster NGC 4372. Note the small blue foreground star on the right "corner" of NGC 4372 th...

Telescopes as time machines is a familiar idea but we should never lose sight of how extraordinary this is! Imagine if palaeontologists could study actual pictures of dinosaurs! Or if historians could see pictures of Cleopatra, or geologists seeing pictures of the Late Heavy Bombardment! What’s mor...

JADES-GS-z14-0 appears to be photobombed by a galaxy colleague: https://i.abcnewsfe.com/a/5bab0ff4-d5b9-4e05-9458-c0c87729230b/231106_gma_digital_catproposal_hpMain_9x16.jpg?w=1600 https://apod.nasa.gov/apod/image/2406/MostDistantGalaxy_Webb_960.jpg JADES-GS-z14-0 (that name sure rolls off the tongu...

How is it that when looking north, east is to your left? Not on any compass I've ever seen. Is this photo a mirror-reversed image? If you lay on the ground, with your head to the north, east is to your left. Stellar coordinates mirror terrestrial coordinates because instead of being drawn on the ou...