Supernova Shrapnel Found In Meteorite
coondoggie writes "Talk about finding a needle in a cosmic haystack. Scientists this week said they found microscopic shrapnel in a meteorite of a star they say exploded around the birth of our solar system 4.5 billion years ago."
Scientists this week said they found microscopic shrapnel in a meteorite of a star they say exploded around the birth of our solar system 4.5 billion years ago."
You know, editors, that sentence would be a lot more readable if it were phrased: "Scientists this week said they found, embedded in a meteorite, microscopic shrapnel from a star they say exploded around the birth of our solar system 4.5 billion years ago"
I had to do a double-take because of "meteorite of a star they say exploded". I didn't know stars had meteorites!
I'm no expert, but I think the question "which supernova this comes from?" is pointless. 4.5 billion years has passed and the remains of this supernova are probably all around half the galaxy. And they are now in form of other stars or planets, or gas clouds in interstellar space. Chances are, it is already mixed with other matter present and the only intact pieces of it are in the form of such grains.