<p>With the axis of rotation of the earth matching the axis of rotation of the stars, and the equator of the earth matching the equator of the stars, any place along the equator would match what you have described. However due to closeness to the horizon, the polar-most stars wouldn't be visible. If you were able to get a hundred metres or so above the ground, with nothing in the surrounding landscape, you could see all of the stars in the sky over a year's time.</p>

CC BY-SA 3.0
2016-04-22T01:55:52.793Z
2016-04-22T01:55:52.793Z
Tanenthor
<p>Is there a place on Earth, where polar axis lies on the horizont and heaven equator is in zenit? If it exists, can I, in theory, see all the constelations available worldwide this night?</p>

CC BY-SA 3.0
2015-09-21T18:07:07.027Z
@barrycarter thx, but is the Earth's equator coincide with the celestial one? I thought this point should be somewhere off the equator (actually it should be line not parallel to latitude lines)?
blitzar787
CC BY-SA 3.0
2015-09-21T18:32:27.250Z
@barrycarter thx, now I got it.
blitzar787
CC BY-SA 3.0
2016-06-21T16:29:18.127Z
@blitzar787 You may be aware that the [invariable plane](https://en.wikipedia.org/wiki/Invariable_plane) of the solar system is different however. This might be what you were thinking of.
called2voyage
<observational-astronomy>
Universal point for sky observation
blitzar787
# Universal point for sky observation

(Asked by: username_0 on 2015-09-21)

Is there a place on Earth, where polar axis lies on the horizont and heaven equator is in zenit? If it exists, can I, in theory, see all the constelations available worldwide this night?

**Tags:** observational-astronomy
> **Comments:**
> **username_0**: @barrycarter thx, but is the Earth's equator coincide with the celestial one? I thought this point should be somewhere off the equator (actually it should be line not parallel to latitude lines)?  
> **username_0**: @barrycarter thx, now I got it.  
> **username_1**: @blitzar787 You may be aware that the [invariable plane](https://en.wikipedia.org/wiki/Invariable_plane) of the solar system is different however. This might be what you were thinking of.  

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## 1 answers

### Answer by username_2 on 2016-04-22. Score: 1

With the axis of rotation of the earth matching the axis of rotation of the stars, and the equator of the earth matching the equator of the stars, any place along the equator would match what you have described. However due to closeness to the horizon, the polar-most stars wouldn't be visible. If you were able to get a hundred metres or so above the ground, with nothing in the surrounding landscape, you could see all of the stars in the sky over a year's time.


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