A poster titled "Gravitation: From Newton to Einstein." It discusses both Newton's and Einstein's theories of gravity. The main graphic in the center of the poster shows the inspiral, merger, and ringdown phases of the sorts of black hole mergers detected by LIGO. There is also a waveform showing both LIGO data and the predictions of GR for one of the mergers observed by LIGO.
https://files.mastodon.social/media_attachments/files/110/395/789/316/902/726/original/6a5f61cb594cf229.jpeg