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A New Era of Exploration

Horizontales
the distance between identical points (adjacent crests) in the adjacent cycles of a waveform signal propagated in space or along a wire.
a type of radiant energy that's invisible to human eyes but that we can feel as heat.
the distance light travels in one year.
Verticales
a giant cloud of dust and gas in space.
a branch of space science that applies the laws of physics and chemistry to seek to understand the universe and our place in it