| 1 | Did the star ignite helium at the core, swallow a planet, or swallow a companion star? | |
| 2 | Spitzer's infrared vision revealed the size of the dusty disk that swirls around the companion object. | |
| 3 | The companion star had apparently survived the original supernova explosion that created the black hole. | |
| 4 | The hypothetical planet - or companion of the Sun - would be located in the outer part of the Oort cloud. | |
| 5 | Material from the large blue companion star is seen being pulled toward the black hole by its powerful gravity. |
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