Deep Time: Crash Course Astronomy #45
0
0
1,070 צפיות·
10/24/23
ב
Life
As we approach the end of Crash Course Astronomy, it’s time now to acknowledge that our Universe’s days are numbered. Stars will die out after a few trillion years, protons will decay and...
להראות יותר
0 הערות
sort מיין לפי
