• In our multiverse feature, we should have said that the radius, not the diameter, of the observable universe is 42 billion light years (26 November, p 42).
Letter: For the record
Published 7 December 2011
Issue no. 2842 published 10 December 2011
Published 7 December 2011
• In our multiverse feature, we should have said that the radius, not the diameter, of the observable universe is 42 billion light years (26 November, p 42).
Issue no. 2842 published 10 December 2011