3 articles | last updated: Jun 11 22:20:03
Astrophysicists propose self-interacting dark matter as the key to understanding Crater 2's unique characteristics and origin.
- Crater 2, a satellite galaxy of the Milky Way, is located 380,000 light years from Earth.
- The galaxy's low density and large size challenge prevailing cold dark matter (CDM) theories.
- Researchers suggest self-interacting dark matter (SIDM) better explains Crater 2's properties.
- SIDM involves dark matter particles that interact and collide, creating a shallow density core.
- This theory aligns with Crater 2's observed orbit and low-density dark matter halo.
People, Places and Things In This Story
- Crater 2 Dwarf Galaxy
- Milky Way Galaxy
- Earth Planet
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- Science