What would the night sky look life if the Earths axis wasn't tilted? Where can I find info on pre-tilt earth?

Question

What would the night sky look life if the Earths axis wasn't tilted? Where can I find info on pre-tilt earth?

Answer 1

The ecliptic would be coincident with the equator, so the planets would always follow approximately the same path relative to your local horizon. There wouldn't be a Pole Star - the celestial pole would coincide with the north ecliptic pole in Draco, between delta and zeta Draconis. Long-term, there would be no precession. And, since there would be no equinoxes, astronomers would use a different reference point for 0 RA.

Answer 2

Much the same as it does now, except that all elevations would be shifted 23 degrees.

More noticeable would be the difference in seasons -- we wouldn't have any -- and day/night: both 12 hours, all the time, everyplace on earth.

Answer 3

There is no such thing as a pre-tilt earth!

As for what the sky would look like... pretty similar to what it looks like now. The poles would still see the same stars all the time going around and around and never rising or setting, the equator would have no circumpolar stars (all stars rise and set).

What would be different is the seasons - we wouldn't have them!