STEM Challenges

From the first photons after inflation to the formation of the Solar System and the emergence of life — 13.8 billion years of cosmic history condensed...

Turn any radio antenna to the sky and a tiny fraction of the static you receive is something extraordinary — the oldest light in the universe, the fad...

For about twenty minutes, the entire universe was a nuclear reactor. In that brief window, the fates of all hydrogen and helium in the cosmos were sea...

In the first trillionth of a trillionth of a trillionth of a second, the universe underwent changes more dramatic than anything since. An era of explo...

The Big Bang is the most tested and best-supported theory of the origin of the universe — but it is also one of the most misunderstood. What do scient...

The expanding universe is one of the most misunderstood concepts in all of science. There was no explosion into empty space. The universe has no cente...