VICEさんのインスタグラム写真 - (VICEInstagram)「We are made of “star stuff,” in the words of astronomer Carl Sagan, but exactly which stars make what stuff is still a matter of some debate. ⁠ ⁠ While we know that heavy elements such as gold, silver, and iron are forged by the deaths of stars, or in cataclysmic stellar collisions, it’s not clear what proportion of elements originate from each source. And a newly updated Periodic Table that includes the stellar origins of elements has revealed a mysterious gap in our knowledge about the genesis of gold in the cosmos. ⁠ ⁠ Link in bio for more. ⁠ ⁠ 📸: NASA Goddard Space Flight Center/CI Lab⁠ ⁠」9月19日 2時01分