# Supermassive black holes may be surrounded by dark matter clusters, new 'echo map' technique suggests

> Astronomers have used a technique called echo mapping to detect hints that supermassive black holes, such as the cosmic titan at the heart of the Milky Way, known as Sagittarius A (Sgr A), are surrounded by dense clouds…

- **Source:** [Space](https://www.space.com/astronomy/dark-universe/supermassive-black-holes-may-be-surrounded-by-dark-matter-clusters-new-echo-map-technique-suggests?utm_source=gearopen.com&utm_medium=referral&utm_campaign=feed&utm_content=6a385bc6e8976fcb37ce0206)
- **Published:** 2026-06-21
- **Category:** Science
- **Tags:** #amazon-echo #matter #black #dark #holes #supermassive #clusters #surrounded
- **Canonical:** http://localhost:4321/a/6a385bc6e8976fcb37ce0206

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_GearOpen's distilled summary. The full original article is published at Space (source link above); GearOpen does not republish the source's full text._