Why Do We Exist? The Nine Realms of the Universe That Make You Possible

Work

by Hakeem Oluseyi, Nils Johnson-Shelton · 2026

Astrophysicist Hakeem Oluseyi presents a sweeping account of the universe and humanity’s place within it, tracing the interconnected cosmic conditions that made life and consciousness possible. The book moves from the Big Bang and the formation of stars to chemistry, biology, and the emergence of human minds, using nine “realms” to frame questions about existence and meaning.

Get the book

1 episode featuring Why Do We Exist? The Nine Realms of the Universe That Make You Possible

StarTalk with Neil deGrasse Tyson
Oluseyi maps the cosmic chain that makes life possible
The conversation tests how far evidence can carry explanations of existence before speculation outruns what science can establish.
Sep 15, 2026 · 48 min

1 episode featuring Why Do We Exist? The Nine Realms of the Universe That Make You Possible

Oluseyi maps the cosmic chain that makes life possible