Google Groups no longer supports new Usenet posts or subscriptions. Historical content remains viewable.
Dismiss

CHALLENGE !! Can you count a number of sunspots on the attached image of solar disc ?

2 views
Skip to first unread message

a a

unread,
Nov 3, 2022, 1:57:17 PM11/3/22
to
Can you count a number of sunspots on the attached image of solar disc ?
152 views
Subscribe


18:45 (8 minutes ago)
to
swc.nict.go.jp/en/trend/sunspot.html
0 new messages