This headline likely refers to the fact that both Einstein’s theory of relativity and quantum physics are essential for understanding the early universe and the Big Bang.

• Relativity describes gravity and the large-scale structure of the universe. It explains how the universe is expanding and how gravity influences the movement of celestial objects.
• Quantum physics deals with the very small, like atoms and subatomic particles. It helps explain the behavior of matter and energy at the earliest moments of the universe, when conditions were incredibly dense and hot.
  Scientists believe that a combination of these two theories is necessary to fully understand the origins and evolution of the universe. However, reconciling relativity and quantum physics into a single, unified theory remains a major challenge in theoretical physics.

Yes, some scientists say that a combination of Albert Einstein’s theory of relativity and quantum physics is essential to understanding the Big Bang: 

• Explanation of the Big BangAstrophysicist P. Ajith of the International Centre for Theoretical Sciences in Bengaluru says that a combination of these two theories may help explain how the universe expanded from a single entity. 
• Unified theoryA mathematical framework that unifies these two theories could help explain the conditions of the Big Bang, dark matter, photons, and more. 
• Quantum nature of gravityResearchers from the Indian Institute of Technology Guwahati and the University of Stellenbosch are studying the quantum nature of gravity, which could bridge the gap between general relativity and quantum mechanics. 

Here’s some more information about the Big Bang and the theory of relativity:

• The Big Bang theoryThe Big Bang theory proposes that the universe began from a singularity, a single point that was infinitely hot and dense, around 13.7 billion years ago. 
• Theory of relativityThe theory of relativity includes two interrelated theories: special relativity and general relativity. Special relativity applies to physical phenomena without gravity, while general relativity explains the law of gravitation. 

A combination of Albert Einstein’s theory of relativity and quantum physics may help explain the expansion of the universe from a singular entity, P. Ajith, astrophysicist with the International Centre for Theoretical Sciences, Bengaluru, has said

Does the theory of relativity explain the Big Bang?

Special and General relativity have both contributed the theoretical basis of the the nature of energy, gravity and of spacetime that made the “Big Bang” 

Does quantum physics explain the Big Bang?

According to current scientific understanding and the principles of quantum mechanics, the exact cause of the Big Bang is still a topic of debate and speculation. The Big Bang theory itself describes the rapid expansion of the universe from an extremely hot and dense state about 13.8 billion years ago

Did Albert Einstein contribute to the Big Bang theory?

The idea that the universe had a beginning was first suggested by the general theory of relativity, completed by Albert Einstein in 1916.

Did time exist before the Big Bang?

Beginning of time

According to others (including Stephen Hawking), time came into existence together with the Universe, rendering the whole concept of the word ‘before’ meaningless. Asking what happened before the Big Bang would be like asking what lies north of the North Pole, or what distance is shorter than zero

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