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- Back to the Titanic documents the first manned dives to Titanic in nearly 15 years. New footage reveals fresh decay and sheds light on the ship's future.
- For most, it's the deadly centerpiece of the film Star Wars. But in truth, real death stars are in the final stage of life before they explode into supernovae and, occasionally, the biggest blast in the universe--the gamma ray burst (GRB).
- They sort of sound like the same phenomenon, but Pulsars and Quasars are very different. Pulsars are tiny--only a few miles across--but they spin as fast as a kitchen blender.
- This program gives viewers a tangible grasp of the enormity of the universe. Models and comparisons give a perspective on the relative sizes of the largest nearby stars, the scale of the solar system and just how fast the speed of light is.