Coming Home from Space: The Challenge of Re-Entry

The complex engineering challenges that make re-entry into the earth's atmosphere so dangerous. Scientists have labored for years to bring a crew safely home in what is essentially a meteorite, wrapped in a cocoon of fire, hurtling towards earth six times faster than the fastest bullet. Scientific experts from NASA explain the significance of Columbia's events as they unfolded, offer insights into what may have caused them and how those key events contributed to the shuttle’s ultimate destruction.

The Visitors

Best-selling author Whitley Strieber revisits the site of his traumatic alien encounter for the first time in several decades.

Alien Encounters Declassified

Newly released documents and firsthand accounts of close encounters reveal shocking secrets the U.S. government has been hiding for decades.