What was Theia like?

Theia is a planet theorized to have collided with Earth to form the Moon. But what was Theia actually like? Theia may have been 40% the mass of Earth: https://www.sciencedirect.com/science... other cool things to read: https://arxiv.org/pdf/2507.01826 https://ui.adsabs.harvard.edu/abs/202... If you enjoy, please like and subscribe Footage in this video made using Space Engine