These 234 Proto-Clusters Are A Rare Look Into Galaxy Cluster Formation

Why does space have structure? Why does our universe have not only stars, but galaxies and galactic clusters? Researchers recently identified 234 potential proto-clusters: candidates for early galactic clusters from when the universe was just 3 billion years old that may help solve this astrophysical mystery. » 4/02/15 7:30am 4/02/15 7:30am

How we first discovered infrared (and how you can discover it all over again)

Infrared is a whole spectrum of light that we can only see in Predator movies, and special episodes of Cops. How did people first discover this stealthy light? It all started with a bunch of thermometers in the hands of an astronomy genius — and it's an experiment you can reproduce at home. » 7/27/12 7:00am 7/27/12 7:00am