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Light from the Andromeda galaxy - Physics A level explained - tutorials and exam tips

Light from the Andromeda Galaxy

The Andromeda Galaxy is 2.5 million light years from Earth i.e. the light we see left about 2.5 million years ago. At this time, Earth was populated by early humans such as homo habilis. The homo sapiens species had not yet evolved!


#physics #universe #space #maths #alevel #stars