Something Is Throwing Stars Out of the Milky Way... Sagittarius A*

#universe, #perfect universe, #galaxy #Mysteries

There is a star leaving the Milky Way, and it is never coming back.

It is a brilliant blue-white sun moving at nearly four million miles an hour — fast enough to escape the gravity of our galaxy. Trace its path backward and it points to one place: the dead centre of the Milky Way.

Sagittarius A*.

At the centre of our galaxy sits a supermassive black hole, four million times the mass of the Sun. It is an ancient anchor. But it is also something stranger: a gravitational engine that can tear a pair of stars apart, keep one, and throw the other out of the galaxy.

This film follows the mechanism Jack Hills predicted in 1988, the first hypervelocity stars found in the Milky Way halo, the discovery of S5-HVS1, the paradox of youth around Sagittarius A*, the invisible swarm of dead stellar remnants near the Galactic Centre, and the fate of a star exiled into the space between galaxies.

One twin is captured.
One twin is thrown.
Neither of them was lucky.

CHAPTERS:
00:00 — A Star Leaving the Milky Way
01:53 — The Prediction
05:56 — The Separation
09:10 — The Cage
12:21 — The Drain
14:29 — The Exile
18:30 — The Shallows

KEY IDEAS:
• Hypervelocity stars
• S5-HVS1 and its traceback to Sagittarius A*
• Jack Hills’ 1988 prediction
• The Hills mechanism: one star captured, one star ejected
• Sagittarius A* and the S-stars
• The paradox of youth
• Dynamical friction and mass segregation
• Invisible stellar-mass black holes near the Galactic Centre
• Hypervelocity stars with possible planets
• The exile of a star into intergalactic space
• Why Earth is safe only because we live far out in the galactic shallows

Note: Close-up visuals of Sagittarius A*, binary disruption, S-star orbits, compact remnants, and intergalactic exile are artistic scientific interpretations based on published models and observations.

— Atta, The Quiet Observatory