Every optical upper limit ever published for helium in a Type Ic supernova was drawn from a wavelength window that physically cannot detect the element under the conditions those explosions produce. A ...

The TARDIS lands on the planet Kembel and the Doctor goes to find help for the injured Steven. He discovers that the Daleks are on Kembel and are planning to conquer Earth.

Television theme songs serve as the sonic handshake that invites viewers into a fictional world before the story begins. These musical compositions set the mood and establish the identity of the ...