Mercury is the underdog planet. It's the smallest guy in the neighborhood, and it lives in the roughest part of town—high temperature, strong solar wind. But little Mercury is tough. It's made ...

His story, along with scientific and anecdotal opinions are the subjects of PBS’ “Nova" streaming on PBS.org, the free PBS app and some local ... Shelley Wright, a professor of physics, astrophysics ...

“We can’t say they’re aliens,” astrobiologist Jacob Haqq-Misra observes of rumored visitors from other planets ... of director Terri Randall’s “NOVA” presentation—not a search ...