23.5 is - or very close - the actual tilt of the Earth. So as long as that is the case, nothing particular happens due to that.
23.5 degrees
For a start there would only be 1 season, forever if the Earth's axis was 0 degrees.
Earth's axial tilt is 23.44°.
Seasons
The earths tilt at its axis
G
Yes.
Mercury's axis tilt is 0°. Venus' axis tilt is 177.4°. Earth's axis tilt is 23.5°. Mars' axis tilt is 25.2°. Jupiter's axis tilt is 3.1°. Saturn's axis tilt is 25.3°. Uranus' axis tilt is 97.8°. Neptune's axis tilt is 28.8°. Pluto's axis tilt is 122.5°.
its earths tilt on its axis orbiting the sun
The earth's axis is tilted to 23.48 degrees to the ecliptic plane
It would have warmer summers and colder winters.
23 degrees