And Heck says it's our best source of presolar stardust-meaning stardust older than the solar system and the sun itself.

赫克说这是有关前太阳系星团的最佳资料，前太阳系星团指比太阳系和太阳本身更古老的星团。

And Heck says it's our best source of presolar stardust—meaning stardust older than the solar system and the sun itself.

赫克说它是我们最好的太阳系前星尘来源——意味着比太阳系和太阳本身更古老的星尘。