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2. List of astronomical catalogues - Wikipedia

   en.wikipedia.org/wiki/List_of_astronomical...

   AM — Arp-Madore catalogue of open and globular star clusters (Halton Arp / Barry F. Madore) (for example: Arp-Madore 1 in Horologium, Arp-Madore 2 in Puppis) An — Anderson (double stars) Andrews / Lindsay (AL) (open star clusters) (for example: Andrews-Lindsay 1 at 13:15:16 / -65°55'12" in Musca ) (AL 1 is also known as vdB-Hagen 144)

3. Atlas of Peculiar Galaxies - Wikipedia

   en.wikipedia.org/wiki/Atlas_of_Peculiar_Galaxies

   For example, NGC 2914 (Arp 137) is merely a spiral galaxy with faint spiral arms, [14] and NGC 4015 (Arp 138) is an interacting pair of galaxies where one galaxy is an edge-on spiral galaxy. [15] Some objects, such as NGC 2444 and NGC 2445 ( Arp 143 ), are systems that contain "ring galaxies", which are created when one galaxy (the elliptical ...

4. Halton Arp - Wikipedia

   en.wikipedia.org/wiki/Halton_Arp

   Halton Christian "Chip" Arp (March 21, 1927 – December 28, 2013) was an American astronomer. He is remembered for his 1966 book Atlas of Peculiar Galaxies , which catalogued unusual looking galaxies and presented their images.

5. ARP4754 - Wikipedia

   en.wikipedia.org/wiki/ARP4754

   ARP4754(), Aerospace Recommended Practice (ARP) Guidelines for Development of Civil Aircraft and Systems, is a published standard from SAE International, dealing with the development processes which support certification of Aircraft systems, addressing "the complete aircraft development cycle, from systems requirements through systems verification."

6. Is Christmas Eve a federal holiday? Here’s what to know after ...

   www.aol.com/christmas-eve-federal-holiday-know...

   Christmas Eve is not a designated federal holiday. Still, U.S. presidents, including Joe Biden and Donald Trump, have used the holiday to grant a day off to the country's more than 2 million ...

7. How To Find The Right Type Of Therapy For You - AOL

   www.aol.com/type-therapy-120000234.html

   Experts share about all the different therapy types and formats that you can access for mental health help: CBT, EMDR, walk-and-talk, and more.

8. Caffeine Can Disrupt Sleep Even 12 Hours After You've ... - AOL

   www.aol.com/caffeine-disrupt-sleep-even-12...

   Coffee drinkers may want to think twice before having large doses of caffeine several hours before bed — if they want a good night's sleep. A new study suggests that certain doses of caffeine ...

9. ISO 14555 - Wikipedia

   en.wikipedia.org/wiki/ISO_14555

   ISO 14555 is an ISO standard for arc stud welding of metallic materials.It was incorporated as a European Norm as EN (ISO) 14555 and is referenced by Eurocode 4 in the evaluations of the design shear resistance of a headed stud which is automatically welded according to this standard.