A new experiment has demonstrated something that sounds physically impossible – light itself casting a shadow. It turns out ...

Sunspots captured astronomers' interest, and with the expanding availability and quality of telescopes, were closely tracked until 1645. Despite huge interest in them, astronomers could find no ...

Shadows are a natural consequence of opaque walls in an illuminated Universe. Light shines; photons travel until they hit an ...

While the current EP majority may be able to effectively exercise a cordon sanitaire over both the far right and the far left ...

An elementary school science teacher in Antioch Consolidated School District ... There is a section behind a curtain where ...