Story perspectives

Rare Star Discovery Challenges Early Element Production Models

3/19/2026

Summary

Story summary

Scientists have identified PicII-503, a rare second-generation star, in the dwarf galaxy Pictor II, about 150,000 light-years from Earth.
The star has the lowest iron concentration observed outside the Milky Way, with iron content at about 1/40,000th that of the Sun.
It also shows an extreme carbon enrichment, with a carbon-to-iron ratio more than 1,500 times solar.
The discovery, using the Dark Energy Camera, informs models of early element production.

1 of 1

Story summary

Scientists have identified PicII-503, a rare second-generation star, in the dwarf galaxy Pictor II, about 150,000 light-years from Earth.
The star has the lowest iron concentration observed outside the Milky Way, with iron content at about 1/40,000th that of the Sun.
It also shows an extreme carbon enrichment, with a carbon-to-iron ratio more than 1,500 times solar.
The discovery, using the Dark Energy Camera, informs models of early element production.