Spores travel through space and enter earth's atmosphere

They likely are the only one of things that we consider to be alive that are neither plant or animal that can actually withstand Cosmic Rays and travel through space here to earth.

Begin quote from:

Fungal spores are microscopic biological particles that allow fungi to be reproduced, serving a similar purpose to that of seeds in the plant world. Fungi decompose organic waste and are essential for recycling of carbon and minerals in our ecosystem.

What are fungal spores? - University Of Worcester