Roughly 14 billion years ago, a tiny pinpoint of extreme heat and density erupted in a grand explosion, leading to the creation of between 100 billion and 2 trillion galaxies, one of them being our ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com. How can a Big Bang have been the start of the ...

The universe may not have begun with the Big Bang as is generally thought but from the collapse of a massive black hole, a new theory suggests. That is to say this model of cosmology explains the ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. A new model predicts that ...

The universe has been expanding for 13.8 billion years, but this may not go on forever. According to some theories, we may be accelerating toward a cataclysmic end. When you purchase through links on ...

Add Yahoo as a preferred source to see more of our stories on Google. In space, there are four dimensions: length, width, height and time. scaliger/iStock/NASA via Getty Images Plus About a century ...