A stellar example of the work of astrophysicists.
This figure is a time-lapse movie from infrared light detailing how stars in the central light-year of our Galaxy have moved over a period of 14 years. The images were captured using one of the Paranal Observatory's very large telescopes in northern Chile with a sophisticated infrared camera. The stars are moving under the influence of the enormous gravity of an unseen object that must be extremely compact -- a super-massive black hole thought to have the mass of 3 - 4 million suns. They really get whipped around that central spot.
The deep near-infrared image in the figure below shows the crowded inner 2 light-years of the Milky Way with the exact position of the galactic center indicated by arrows. That is where the action is occuring.