What is the primary observable effect of the slow precession of Earths rotational axis?

0 votes
    It causes tides to rise and fall.
     It causes the set of constellations visible on any fixed night each year to change over many years.
     It causes parallax measurements to change.
     It causes the days to slowly lengthen.
     It causes eclipses to occur more frequently.
asked Sep 20, 2012 in Astronomy by anonymous
    

1 Answer

0 votes
It causes the set of constellations visible on any fixed night each year to change over many years.
answered Sep 22, 2012 by SkyStar ~Expert~ (2,855 points)



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