
An ‘alien meteorite’ probably didn’t slam into Earth — how will we know if one does?
It might soon become possible to study the entire history of the Milky Way through interstellar objects.
I'm a science journalist in Boulder, Colorado.
I report on the earth, planetary and astronomical sciences. See below for selected clips, and find more recent thoughts at @alexwitze.
My book ISLAND ON FIRE, coauthored with my husband Jeff Kanipe, is about the extraordinary 18th-century eruption of the Icelandic volcano Laki.
Reach me at witzescience@gmail.com.