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visits member for 4 years
seen 5 hours ago

Nov
25
awarded  Yearling
Dec
27
awarded  Revival
Dec
10
awarded  Nice Question
May
4
awarded  Student
May
4
awarded  Scholar
Jan
20
accepted What proportion of a star's hydrogen is consumed in its life?
Jan
20
asked What proportion of a star's hydrogen is consumed in its life?
Jan
18
asked Interstellar bodies
Jan
17
answered Where to find information on the pulsar map written to Voyager's golden record?
Jan
17
answered Why doesn't helium start to fuse while there is still hydrogen fuel?
Nov
4
awarded  Teacher
Nov
4
awarded  Supporter
Nov
4
answered How are the northern lights produced?