> reconstruct what happened so long ago just based on careful observations. Me too! My book is filled with them. Like how minerals in lava, affected by Earth's

> reconstruct what happened so long ago just based on careful observations. Me too! My book is filled with them. Like how minerals in lava, affected by Earth's magnetic field, lock into place while cooling, which provides us with yet another cross-check for radiometric dating. See page 23: https://impacts.to/downloads/lowres/impacts.pdf https://impacts.to/downloads/lowres/impacts.pdf