the earth is fixed in its orbit.
The earth is not fixed in it's orbit and neither is the orbit fixed.
For example the precession of the equinoxes causes the to wobble tracing a circle which currently points towards Polaris in Ursa Minor.
3000 years ago it pointed toward Thuban in the constellation Draco.
13000 years ago it pointed toward Vega in the constellation Lyra.
3000 years ago the sun entered the constellation Ares on the vernal equinox. Now the sun enters Pisces on the vernal equinox.
The orbit is changed by perturbations caused by Venus & Mars.
There is no better love between 2 people than mutual respect for each other WT Young, 2002
Who gave anyone the authority to call me an authority on anything. WT Young, 1969
Since Evolution is only ~90% correct it should be thrown out and replaced by Creation which has even a lower % of correctness. W T Young, 2008