Mars spent 8 months in Gemini and Cancer, tracing its apparent retrograde motion between 7th December 2024 and 24th February 2025. The red planet came to opposition…

I've been photographing the night sky just over a year; but that's a Saturn year. 😉 Whose first iteration looks like this: https://apod.nasa.gov/apod/ap220819.html Then, I went on to produce this ...

Analysis of changes in the Earth’s rotation in the Precambrian suggests that day length stabilized at 19 h for 1 billion years due to tidal resonance, which may have been linked to a relatively ...