No, not me, you use 地球作為參照係

You go to Church this Sunday, two earth days from now. I use 宇宙 days. I go to church in 2 宇宙 days.

所有跟帖： 

• 在已知的可見的宇宙範圍內。而這個範圍，如果用光年表示，就等於460億光年。看裏麵的鏈接。 -藍山雀- ♀ (230 bytes) () 09/25/2015 postreply 11:54:46

• You are avoiding my question. -Calypso- ♂ (327 bytes) () 09/25/2015 postreply 12:01:51

• 光速運行一年的距離，叫光年。光年是距離的單位。 -藍山雀- ♀ (0 bytes) () 09/25/2015 postreply 12:05:10

• I am asking you the definition of a day. Not 光年 -Calypso- ♂ (47 bytes) () 09/25/2015 postreply 12:07:26

• 光年是距離，你問的是時間，這是跑題了。 -藍山雀- ♀ (7517 bytes) () 09/26/2015 postreply 00:54:59

• How does 460億光年 related to 7 days? -Calypso- ♂ (31 bytes) () 09/25/2015 postreply 12:05:21