Astronomy/Space themed currency

Here are four different pieces of currency that have an astronomical/space theme to it. The top currency is from Romania showing the August 11, 1999 total solar eclipse path across Romania, the second is from India showing their satellite in orbit, the third is from Armenia showing the late astronomer Viktor A. Armbatsumian, who studied galaxies, and an observatory and the last one is from Switzerland and depicts Heinrich Wilhelm Olbers known for Olber's Paradox.