Sunday inspiration: A voice from the future
Though I have already written a profile about Greta Thunberg, the young woman who virtually single handedly has propelled the fight for climate science into the mainstream, I continue to be struck by what I consider to be her significance in the larger picture of human history. This photo demonstrates so clearly the power for change that she has exhibited: last year she performed a one-girl climate strike. This year millions of people participated in the strike for climate science.
We are in the transition between the Age […]
I posted this a few years ago but it’s still my favorite post for this time of year. Because the earth orbits at a slight tilt, and the tilt of the orbit changes over time, the celestial equator is always moving and the vernal equinox is always moving along the ecliptic, the apparent path of the Sun around the Earth from our perspective. We call this the “Precession of the Equinoxes,” and that is what we mean when we talk about the 
Image credit: “God the Father” by Cima de Conegliano. Because the earth orbits at a slight tilt, and the tilt of the orbit changes over time, the celestial equator is always moving and the vernal equinox is always moving along the ecliptic, the apparent path of the Sun around the Earth from our perspective. We call this the “Precession of the Equinoxes,” and that is what we mean when we talk about the 
