The rest of those are not experiments, they are descriptions of natural phenomena we have no power of repeating. Which goes to show that you can have a science that does not have experiments but does have observations.
We clearly have different definitions of "experiment". Having a theory (e.g. light is affected by gravity), making a prediction (that star that should be behind the sun will be visible) and then doing an observation fits my definition of experiment. It's more difficult to reproduce that measuring the speeds of falling apples, but eclipses are not that rare and you can always come up with other predictions from you theory and do the corresponding observations.
I would rather argue that we can in fact do experiments in economics as well. It's just harder to draw conclusions from the observations because there are lots of variables you can't control for easily.
Elements in a star is part of chemistry.
The rest of those are not experiments, they are descriptions of natural phenomena we have no power of repeating. Which goes to show that you can have a science that does not have experiments but does have observations.