What are primordial black holes?

Although astronomers haven't yet proven they exist, primordial black holes could answer some of the current outstanding questions in astronomy, including the nature of dark matter.

What Are Primordial Black Holes And How Are They Detected?

Primordial black hole - Wikipedia

Primordial black holes could explain dark matter, galaxy growth, and more

Primordial black holes could hold the key to dark matter mysteries

Types Black Holes – NASA Universe Exploration

17 Intriguing Facts About Primordial Black Holes

Tiny primordial black holes could have created their own Big Bang

Primordial Black Holes & Search For Dark Matter From Multiverse

What Are Primordial Black Holes And How Are They Detected?

Primordial black hole - Wikipedia

How Astronomers Are Hunting for Tiny 'Primordial Black Holes

What is a black dwarf star? Is there any evidence they are present in the universe? - Quora

Frontiers A Brief Review on Primordial Black Holes as Dark Matter