We know how the universe began. An event we call the Big Bang started it all about 13.8 billion years ago. How the universe ...

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 [email protected]. How can a Big Bang have been the start of the ...

After a century of observations spanning the breadth of the cosmos and theoretical insights that push humanity's vision of ...

Scientists figured out that the universe is billions of years old — after years of reading ancient rocks and dying stars, and ...

About a century ago, scientists were struggling to reconcile what seemed a contradiction in Albert Einstein’s theory of general relativity. Published in 1915, and already widely accepted worldwide by ...

In 1992, three physicists began an argument about how many numbers we need to fully describe the universe. Their surprisingly ...

Findings from a new study into the cosmic "afterglow" may rewrite the history of the universe, according to researchers. This afterglow—the "cosmic microwave background" (CMB), the relic radiation ...

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 ...

Cosmologist Katie Mack breaks down what the latest findings about dark energy mean for our universe’s future. Either way, it won’t be happy. Dark Energy Spectroscopic Instrument (DESI) collects data ...