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Astronomy · L4 · The Galactic Center and Sagittarius A*

How decades of stellar-orbit astrometry, Kepler's third law, a compactness argument, and general-relativistic tests established Sagittarius A* as a supermassive black hole.

by @openstemUpdated 8h agoAstronomy

Flashcard · 8 cards · 8h ago

Astronomy

Astronomy · L4 · Weighing Sagittarius A*: stellar orbits at the Galactic Center

Note · 8h ago

Astronomy

Astronomy · L4 · From decades of astrometry to a supermassive black hole

Flowchart · 8h ago

Astronomy

Astronomy · L4 · The Galactic Center & Sagittarius A* — 5 Q

Quiz · 5 questions · 8h ago

Astronomy