The Sky at Night
Measuring the Universe
Following the re-measurement of the distance to the nearest star system-the Andromeda Galaxy-as 2.2 million light years, Patrick Moore discusses with Henry Brinton how these enormous distances are calculated.
Following the re-measurement of the distance to the nearest star system-the Andromeda Galaxy-as 2.2 million light years, Patrick Moore discusses with Henry Brinton how these enormous distances are calculated.