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A theory can offer explanation for an observed phenomenon that is supported by extensive data.
A law can offer an explanation for an observed phenomenon that is considered to be universally true.
A hypothesis can suggest an explanation for an observed phenomenon that can later be tested through experimentation
The first spacecraft to observe Venus was the Venera 3 in 1962.
A phenomenon is any situation this is observed, please think before asking stupid questions
It was Mariner 2.
a fact, occurrence, or circumstance observed or observable
The New Horizons spacecraft, which completed its Pluto flyby in 2016.
The correct spelling is phenomena (plural of phenomenon, an observed event).
the Tyndall effect
A hypothesis can suggest an explanation for an observed phenomenon that can later be tested through experimentation
None. The New Horizons spacecraft only observed Pluto from orbit.