Where Have All The Milky Way's Early Stars Gone?- Our Galaxy has a curious lack of pristine stars
BBC Sky at Night Magazine|August 2024
The Big Bang produced a Universe filled almost exclusively with hydrogen and helium; all other elements - what astronomers call metals - were produced by stars, supernovae and everything that happens later. So if you can pick out a pristine star with no metals polluting it from among the billions in the Milky Way, then you are likely to have a star dating from our Galaxy's earliest days.
- By Chris Lintott
Where Have All The Milky Way's Early Stars Gone?- Our Galaxy has a curious lack of pristine stars

Our Galaxy has a curious lack of pristine stars. The quest for the oldest star in the Milky Way has been going on for decades. A new paper, from a team led by Edinburgh's Britton Smith, suggests that we might already have got as close as we ever will.

The secret to this form of big game hunting is to look for stars with very few heavy elements. The Big Bang produced a Universe filled almost exclusively with hydrogen and helium; all other elements - what astronomers call metals - were produced by stars, supernovae and everything that happens later. So if you can pick out a pristine star with no metals polluting it from among the billions in the Milky Way, then you are likely to have a star dating from our Galaxy's earliest days.

この蚘事は BBC Sky at Night Magazine の August 2024 版に掲茉されおいたす。

7 日間の Magzter GOLD 無料トラむアルを開始しお、䜕千もの厳遞されたプレミアム ストヌリヌ、9,000 以䞊の雑誌や新聞にアクセスしおください。

この蚘事は BBC Sky at Night Magazine の August 2024 版に掲茉されおいたす。

7 日間の Magzter GOLD 無料トラむアルを開始しお、䜕千もの厳遞されたプレミアム ストヌリヌ、9,000 以䞊の雑誌や新聞にアクセスしおください。

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