This document introduces tangible holograms for data physicalization and big data exploration. It discusses prior work on tangible user interfaces and radical atoms, which involve augmenting physical objects with digital information. The document presents a prototype system using HoloLens that displays holographic visualizations of data that can be manipulated physically using a robotic arm. It proposes a framework for dynamic data physicalization using tangible holograms to represent varying data dimensions through physical properties. The goal is collaborative exploration of big datasets using mobile, embodied interaction.