Free Republic
Browse · Search
General/Chat
Topics · Post Article

Skip to comments.

Astronomy Picture of the Day - Facing NGC 6946
NASA ^ | 26 Jul, 2024 | Image Credit & Copyright: Roberto Marinoni

Posted on 07/26/2024 12:05:54 PM PDT by MtnClimber

Explanation: From our vantage point in the Milky Way Galaxy, we see NGC 6946 face-on. The big, beautiful spiral galaxy is located just 20 million light-years away, behind a veil of foreground dust and stars in the high and far-off constellation Cepheus. In this sharp telescopic portrait, from the core outward the galaxy's colors change from the yellowish light of old stars in the center to young blue star clusters and reddish star forming regions along the loose, fragmented spiral arms. NGC 6946 is also bright in infrared light and rich in gas and dust, exhibiting a high star birth and death rate. In fact, since the early 20th century ten confirmed supernovae, the death explosions of massive stars, were discovered in NGC 6946. Nearly 40,000 light-years across, NGC 6946 is also known as the Fireworks Galaxy.


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; nasa
To be added or removed from the Astronomy Picture of the Day ping list please send me a request via "Private Reply" (Mail).

For more detail go to the link and click on the image for a high definition image. You can then move the magnifying glass cursor then click to zoom in and click again to zoom out. When zoomed in you can scan by moving the side bars on the bottom and right side of the image.

1 posted on 07/26/2024 12:05:54 PM PDT by MtnClimber
[ Post Reply | Private Reply | View Replies]

To: MtnClimber

2 posted on 07/26/2024 12:06:17 PM PDT by MtnClimber (For photos of scenery and wildlife, click on my screen name for my FR home page. More photos added.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: 21stCenturion; 21twelve; 4everontheRight; abb; AFB-XYZ; AFPhys; Agatsu77; America_Right; ...
Pinging the APOD list

🪐 🌟 🌌 🍔


3 posted on 07/26/2024 12:07:00 PM PDT by MtnClimber (For photos of scenery and wildlife, click on my screen name for my FR home page. More photos added.)
[ Post Reply | Private Reply | To 2 | View Replies]

To: MtnClimber

Except for the occasional galaxy floating by, there’s nothing out there.


4 posted on 07/26/2024 12:36:42 PM PDT by ComputerGuy (Heavily-medicated for your protection)
[ Post Reply | Private Reply | To 2 | View Replies]

To: MtnClimber

Wouldn’t all the aliens be sliding to the bottom on their planets?....


5 posted on 07/26/2024 1:15:12 PM PDT by minnesota_bound (Need more money to buy everything now)
[ Post Reply | Private Reply | To 2 | View Replies]

To: MtnClimber

So if we went at the max warp (warp 9.975 or 3,053 times the speed of light), we could be there in 20 million /3053 = 6551 years.

Can we use replicator machines to build new star ships to house the surplus population growth while we travel?

Assume we start with a crew of 1000 people (Enterprise was 1014 give or take a red shirt or two).

And assume we grow the population at a 1% annual growth rate (Historical human growth rate peaked at 2%). They have advanced health care, won’t run into many hostile aliens in intergalactic space, and presumably can avoid civil war.

We would arrive in 6500 years with a population after 6500 years of compound growth at 1% of ≈1.2×10^31.

And we would have built 1.2x10^28 enterprise class star ships to hold that population.

How big of an invasion force do we need for a whole galaxy?


6 posted on 07/26/2024 1:24:21 PM PDT by DannyTN
[ Post Reply | Private Reply | To 1 | View Replies]

To: MtnClimber

A beautiful spiral.👍🔭


7 posted on 07/26/2024 1:29:47 PM PDT by telescope115 (I NEED MY SPACE!!! 🔭)
[ Post Reply | Private Reply | To 1 | View Replies]

To: telescope115
A beautiful spiral.

Almost as beautiful as this one...

8 posted on 07/26/2024 3:37:34 PM PDT by Deaf and Discerning
[ Post Reply | Private Reply | To 7 | View Replies]

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
General/Chat
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson