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A Visualization Depicts a Sunset With the Sun Replaced by Other Stars (Original Post) n2doc Mar 2015 OP
higly recommended pscot Mar 2015 #1
The last two are ads for SPF 4000 sunblock mindwalker_i Mar 2015 #2
Do they even sell Arcturus sunblock? Danascot Mar 2015 #5
It would probably come in the form of mindwalker_i Mar 2015 #7
That sounds like a good name for a sunblock, actually! nt MADem Mar 2015 #11
American hawks would go back to worrying about ... Quasimodem Mar 2015 #13
very cool... dhill926 Mar 2015 #3
GAH! Adsos Letter Mar 2015 #4
Very Cool. The Alberio double star sytem would be pretty with it's blue and Yellow colors BlueJazz Mar 2015 #6
Albireo was once thought to be an optical double, but more recently a true double ... eppur_se_muova Mar 2015 #9
Wonderful Link. Thanks much! BlueJazz Mar 2015 #10
Here's a simulator for a solar-system: DetlefK Mar 2015 #8
The two red dwarfs are probably most typical ... eppur_se_muova Mar 2015 #12
Pfft, Eta Carinae or bust MillennialDem Mar 2015 #21
Super great! K&R raven mad Mar 2015 #14
There's a lot of great Grow-Lights out there in space, for sure nikto Mar 2015 #15
Cool!l oldandhappy Mar 2015 #16
Kepler-35 proves that God doesn't like us. If he wasn't so damn cheap, he would'a given us two Suns. Hoppy Mar 2015 #17
or more dolphinsandtuna Mar 2015 #20
Kinda hot with Aldebaran in the sky! Helen Borg Mar 2015 #18
These are really neat! MatthewStLouis Mar 2015 #19
Aldebaran, Smaldebaran.. LW1977 Mar 2015 #22
Kick and recommend alfredo Mar 2015 #23
nice - thanks for posting samsingh Mar 2015 #24

eppur_se_muova

(36,263 posts)
9. Albireo was once thought to be an optical double, but more recently a true double ...
Thu Mar 19, 2015, 10:11 AM
Mar 2015

and it turns out Albireo A is actually a close double, with an orbital period of ~213 years.

A planet around either A or B would see the other as a bright star, since they are separated by a very large distance (orbital period ~100,000 y). Not sure A would have any long-term stable planetary orbits. Both A & B are much more massive than the sun, so such a large orbital period indicates a really large distance (period ~ M-1/2) -- many times the distance from Sol to Pluto (which has an orbital period of ~248 y, and from which the Sun appears as a particularly bright star).

http://freestarcharts.com/index.php/17-guides/stars/171-albireo-beta-cygni-abeta-cyg-double-star?tmpl=component

DetlefK

(16,423 posts)
8. Here's a simulator for a solar-system:
Thu Mar 19, 2015, 07:10 AM
Mar 2015
http://www.stefanom.org/spc/

You have a sun and an Earth-like planet.
To get points, you add more planets, but beware that none get flung out in swing-by maneuvers.

eppur_se_muova

(36,263 posts)
12. The two red dwarfs are probably most typical ...
Thu Mar 19, 2015, 10:59 AM
Mar 2015
According to some estimates, red dwarfs make up three-quarters of the stars in the Milky Way.[2]

http://en.wikipedia.org/wiki/Red_dwarf


And they seem to have their fair share of planets.

Most of our nearest neighbors turn out to be red dwarfs -- but most are not visible to the unaided eye !
This list contains all known stars and brown dwarfs at a distance of up to 5 parsecs (16.3 light-years) from the Solar System. In addition to the Solar System, there are another 54 stellar systems currently known lying within this distance. These systems contain a total of 56 hydrogen-fusing stars (of which 46 are red dwarfs), 14 brown dwarfs, and 4 white dwarfs. Despite the relative proximity of these objects to Earth, only nine of them have an apparent magnitude less than 6.5, which means only about 12% of these objects can be observed with the naked eye.[1] Besides the Sun, only three are first-magnitude stars: Alpha Centauri, Sirius, and Procyon. All of these objects are located in the Local Bubble, a region within the Orion–Cygnus Arm of the Milky Way.

http://en.wikipedia.org/wiki/List_of_nearest_stars_and_brown_dwarfs


I can't help but notice they left out Betelgeuse

raven mad

(4,940 posts)
14. Super great! K&R
Thu Mar 19, 2015, 07:25 PM
Mar 2015

and bookmarked for my equally science-fanatic spouse! Thanks for the post and the beauty therein!

 

Hoppy

(3,595 posts)
17. Kepler-35 proves that God doesn't like us. If he wasn't so damn cheap, he would'a given us two Suns.
Thu Mar 19, 2015, 11:54 PM
Mar 2015

MatthewStLouis

(904 posts)
19. These are really neat!
Fri Mar 20, 2015, 05:35 PM
Mar 2015

For fun, I'd like to see similar pics for these stars in the afternoon or morning, and maybe for a planet in the Goldilocks Zone as well... (As you said, the last few stars likely wouldn't have liquid water under those conditions.)


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