You may have heard about the “green comet.” Here is my rendering of its trajectory in space. Continue reading “Green comet”
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Markers on Planet Earth
We are in a new geological epoch, the Anthropocene. Continue reading “Markers on Planet Earth”
Moon and tide
The Moon is full tonight, Continue reading “Moon and tide”
Nearest to Sun, but latest sunrise
In our picture of the dawn scene on January 5, Continue reading “Nearest to Sun, but latest sunrise”
Quadrantids open the year
In the night between January 3 and 4 Continue reading “Quadrantids open the year”
One last sight
Maybe, one last sight for the year: Continue reading “One last sight”
Heliacal risings and setting – Part Four and Christmas star?
Part One showed the heliacal rising of Sirius in our time and in the Egypt of 2000 BC. Part Two was about geometrical vs. observed events, calendar shift, and heliacal setting. Part Three was about the heliacal rising and setting of the Pleiades, important to the Greeks.
Call for observations! Continue reading “Heliacal risings and setting – Part Four and Christmas star?”
Heliacal risings – Part Three
Goalposts in the sky
The ball often gets kicked between the posts at the western end of the celestial football field, Continue reading “Goalposts in the sky”
Sun lowest
The solstice comes on Wednesday Dec. 21, Continue reading “Sun lowest”