observational

related words
newtonian
space-time
magnetism
aether
tangential
experimenter
heliocentric
magnification
electromagnetism
causality
gravitation
asymmetry
electrodynamics
copernican
qualitatively
terraforming
perturb
faraday
cosmological
coherence
related documents
Observational learning
Frame of reference
Astronomy
General relativity
Hebrew calendar
Logical positivism
Tycho Brahe
Physical cosmology
Big Bang
Tocopherol
Sputnik 1
Causality
Clock
Educational psychology
Aberration of light
Parallax
Stand-up comedy
Dark matter
Astrometry
Cygnus X-1
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