black-hole
Sagittarius A*
- 1974
Radio source discovered
- 2002
Star S2 orbit confirms supermassive black hole
- 2020
Genzel & Ghez win Nobel Prize
- 2022
Event Horizon Telescope images its shadow
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Learn the Science: Read our complete educational breakdown on Coronal Holes.Historical Archive: Track past occurrences of this cosmic phenomenon.Live Telemetry: Jump to the real-time Kp index & solar wind command matrix.
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