What evidence is there for the origins of the elements?
Have a look at Mass Spectrometry 101.
Follow an Interactive H-R Diagram and try the Hertzsprung-Russell Diagram Explorer.
Watch this fascinating compilation of images from Siding Spring (see clip above).
Watch the beauty of the night sky: GREAT SOUTHERN SKY - A Tour through the Cosmos.
You can DOWNLOAD a current sky map.
See the 35 Brightest Galaxies in the Night Sky here.
How is it known that atoms are made up of protons, neutrons and electrons?
How is it known that classical physics cannot explain the properties of the atom?
How can the energy of the atomic nucleus be harnessed?
Here is an animated gif of radioactive decay.
How is it known that human understanding of matter is still incomplete?
Source: sumonsinha37 (2016), internet, https://makeagif.com/gif/cern-the-standard-model-of-particle-physics-T5MnR9, accessed 26/12/23.