The iconic "Polar Express," train was inspired by the 1941 Pere Marquette 1225 steam locomotive. Now, fans hope to make the ...

From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

The Dark Forest theory is one proposed solution to the famed Fermi Paradox, which has bewitched astronomers for more than half a century. To put it concisely, the paradox asks if the cosmos is nearly ...