Public Talk – Is There Evidence 
for a Beginning of 
the Universe and the Big Bang?

Speaker: Prof. David F. Mota (University of Oslo, Norway)

Date: August 20, 2026 11:00 AM
Venue: Auditorium – CITCOMS Building, Naresuan University
Keywords: Cosmology, Big Bang, Cosmic Microwave Background (CMB)

About the Talk

Did the Universe really have a beginning, or has it existed forever?

The idea that the cosmos emerged from a Big Bang is now part of our cultural vocabulary, but what is the actual scientific evidence behind it?

In this public lecture organized as part of SHEAP and IF Public Talk, Prof. David F. Mota will explore how modern cosmology reconstructs the early history of the Universe using observations of distant galaxies and primordial light—the Cosmic Microwave Background (CMB).

Key Topics Covered:

• What scientists actually mean by the “Big Bang”
• Clarifying common misconceptions surrounding cosmic expansion
• Which aspects of our cosmological model are well established vs. which remain open questions
• Whether current observations truly point to a beginning of space and time, or alternative scenarios