The sun has completed just 20 laps around the milky way. On the previous lap (230 million years ago) dinosaurs were just beginning to appear.
How do you feel about that?
We were taught that Earth orbits the Sun in a closed circle. In reality, Earth has never returned to the same point in space once in 4.5 billion years.
Right now, the Sun is carrying Earth and every planet around the center of the Milky Way at 230 km/s (828,000 km/h), more than
It’s a real challenge for store workers to check every item on their shelves daily, to ensure none remain past the use-by date.
It’s near impossible for someone to do it 100% correctly every day.
Fortunately many new technologies are coming in that make it possible.
