Steady State theory
Apart from the other origin theory's, they believed that the universe has always been here and matter was been continuously being created as the universe expanded. Fred Hoyle, Hermann Bondi and Tommy Gold were the first who suggested the steady state theory in the late 1940's. The three men believed that new stars and galaxies would form to fill empty space left behind when old stars and galaxies eventually moved apart. This theory is based on cosmology.
Back then, many astronomers had many reasons to believe the steady state theory more than the big bang. In our unchanging universe we have to allow room for this kind of expansion. The three men that first spoke about this theory assumed that hydrogen atoms appeared out of empty space. Therefore the new hydrogen atoms were just enough to fill the gaps the expansion was causing. Before the 1960’s this theory was very popular but as more observational evidence starting coming in it lost popularity. This theory was also known as the continuous creation theory was it doesn't stop expanding.
Back then, many astronomers had many reasons to believe the steady state theory more than the big bang. In our unchanging universe we have to allow room for this kind of expansion. The three men that first spoke about this theory assumed that hydrogen atoms appeared out of empty space. Therefore the new hydrogen atoms were just enough to fill the gaps the expansion was causing. Before the 1960’s this theory was very popular but as more observational evidence starting coming in it lost popularity. This theory was also known as the continuous creation theory was it doesn't stop expanding.