Space

On The Alien Question: Where Are They?

The great physicist Enrico Fermi asked this question in the 1950s. There are more than 50 possible "solutions" to Fermi's Paradox: Here, astrophysicist Marcelo Gleiser explores a few.

iPTF14hls: The Star That Won't Die

NPR's Lulu Garcia-Navarro talks with Iair Arcavi, postdoctoral fellow in astrophysics at UC Santa Barbara, about the strange behavior of supernova iPTF14hls. This star doesn't seem to want to die.

The Interdependence Of Humanity And Earth

We owe our existence to little photosynthetic bacteria — but there is much more to this story, as life can only mutate and adapt when the planet offers the right conditions, says Marcelo Gleiser.