# A likely supermassive neutron star might shed light on the mass gap between neutron stars and black holes

Source: [Space News - Space, Astronomy, Space Exploration](https://phys.org/news/2026-11-supermassive-neutron-star-mass-gap.html) · 2026-11-13 · Space
Page: https://themorning.science/story/a-likely-supermassive-neutron-star-might-shed-light-on-the-mass-gap-between-neut-4e430101097c86b8
Kind: research · Impact: low

## In brief

- A team of astronomers identified a red giant star with an unseen binary companion using LAMOST and APOGEE data.
- The companion is described as a likely supermassive neutron star.
- The finding may help explain the mass gap between neutron stars and black holes.

## Why it matters

If confirmed, a neutron star at this mass would help clarify where neutron stars end and black holes begin, a boundary that remains poorly constrained.

## Coverage

- [A likely supermassive neutron star might shed light on the mass gap between neutron stars and black holes](https://phys.org/news/2026-11-supermassive-neutron-star-mass-gap.html) — Space News - Space, Astronomy, Space Exploration, 2026-11-13

Tags: neutron stars, black holes, red giants, binary stars, stellar astronomy

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Brief generated by AI (claude-haiku-5-5) from the reporting listed under Coverage. Headlines belong to their publishers. The Morning Science – https://themorning.science