Does nightime sky face outer or inner galaxy?

  • Thread starter Thread starter Moonrat
  • Start date Start date
  • Tags Tags
    Galaxy Sky
AI Thread Summary
Earth's nighttime sky generally faces the outer rim of the Milky Way, while the daytime view is directed toward the galactic center, which is obscured by sunlight. The center of the galaxy, located in the direction of the constellation Sagittarius, is often blocked from view by dust clouds. Visibility of the galactic center varies with the seasons, as the Earth's orbit around the sun shifts our perspective of the night sky. Observers south of 50 degrees north latitude can see the galactic center at certain times of the year, particularly during winter months when conditions are favorable. Overall, the discussion highlights the dynamic nature of our view of the galaxy based on Earth's position and seasonal changes.
Moonrat
Messages
170
Reaction score
0
I recently came across an argument that stated that Earth's nighttime view pretty much always faces the outer rim of our galaxy, while the day time view is facing right towards the center, which of course we don't see due to sunlight. There was refrenced a few indian tribes in s.america who trek toward the top of the andes mountains in the winter where the Earth briefy turns center enough just to see galactic center totally naked.

I am not an astronomer, but I was under the impression that galactic center is somewhere around Sagitarius.

What part of our galaxy to we see at nightime?
 
Astronomy news on Phys.org
It depends upon the season. We are continual revolving around the sun so every month the sun has apparently moved to a different place in the sky. This is the zodiac, and when they say that the sun is in one of the constellations of the zodiac that means we are not able to see the stars in that section of the sky. We are able to look at the section of the sky which contains the center of the galaxy with regularity. It is my understanding that the center of the galaxy is blocked from view by intervening dust clouds.
 
Look along the Milky Way; you are looking at the plane of the galactic disc.
Look in the direction of Sagittarius; you are facing the centre of the galaxy.
Look in the direction of Cassiopeia; you are facing the outer rim of the galaxy.

Garth
 
You can see the center of the galaxy in the constellation Sagittarius. Sagittarius is visible from the northern hemisphere in the summer months. It's at about -40 degrees declination, which means that it's visible at some time of the year to everyone south of 40 degrees north latitude. Sagittarius is home to the densest part of the milky way, the band of star clouds that marks the plane of the galaxy in our skies.

- Warren
 
A minor correction, if I may [it's my perfectionist side emerging]. Anyone south of 50N can view the galactic center [which is at 40S] sometime during the year. It rises to a maximum of about 10 degrees above the horizon for an observer at 40N.
 
Fortunate be those who live where the Milky Way bulge is at its zenith around midnight during the winter months, and for whom winter brings still, cloudless nights!

Who are they, these fortunate ones?
 
Nereid said:
Fortunate be those who live where the Milky Way bulge is at its zenith around midnight during the winter months, and for whom winter brings still, cloudless nights!

Who are they, these fortunate ones?
Might they be Kiwis? :smile: I wish - I'm on the other end of the stick. :blushing:

I get to see and photograph some pretty things, but I am envious of you.
 
They get some pretty good looks at ESO La Silla. The MW bulge is almost at the zenith in their winter sky:
http://www.eso.org/outreach/press-rel/pr-2004/phot-27-04.html
 
Last edited by a moderator:
Back
Top