Does the Wolfe Rayet star, WR104, 8,000 light years away, pose a threat to Earth? This is central question asked in, "Death Stars", an informative The Universe presentation. WR104 is of sufficient mass that once it collapses, will emit a very bright Gamma Ray Burst (GRB). The axis of the star is pointed towards Earth, which makes it a remote threat. Betelgeuse and Eta Carinae are stars in same class, the program compares, whose axes are not aligned with Earth. You learn whether a star may explode into a Super nova or able to emit a blinding GRB. You'll have to watch "Death Stars" to learn about 3C321, a violent interaction of two galaxies and which star presents the most likely threat to Earth.