The Unexpected
The Unexpected
Solar
Normal Stars
Carina Nebula
SNR
Supermassive
Milky Way
Galaxies
Clusters

Unexpected

Discovery of a swarm of stellar-mass black holes around the center of the

Milky Way galaxy. The swarm likely formed as the black holes gradually

decelerated in their orbits and drifted toward the center of the Galaxy.
Unexpected

The discovery of two ultrabright X-ray sources near the center of the galaxy M82,

which could be black holes with masses several hundred times that of the Sun.

Black holes like these may be the seeds for supermassive ones found at

the centers of galaxies.
Unexpected

Discovery of dozens of black holes and neutron stars strung out across tens of

thousands of light years around an elliptical galaxy, as the remains of a collision

between galaxies a few billion years ago.
Unexpected

Discovery of an excess of X-ray sources in the outer reaches of the

Sombrero and other galaxies. The origin of this excess is still unknown.

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