Most stars take millions of years to die. When a star like the Sun has burned all of its hydrogen fuel, it expands to become a red giant. This may be million… 원문보기
2019/04/08 18:57
Uploaded By @Hoyatag Live
시력게임 :: 눈이 건강해지는 앱 [아이앱]
Black Holes Milky Way And Death of a Star – Space Discovery Documentary #How the Universe Works, #Universe, #Space, #Space Discovery Documentary, #Black hole