In what could dramatically change the way astrophysicists look at the birth of the Universe, four Indian scientists, including one from Bengaluru, have challenged the Big Bang theory related to its origin.The theory holds that the Universe was born out of a highly compressed, dense and microscopic point (called singularity) which exploded with a huge force some 13.8 billion years ago, resulting in everything arising from that singularity moving outwards in all directions. From this, all cosmic matter (as we know it today) was formed at different stages through time until now.