![People believed to be dead live longer People believed to be dead live longer](https://www.wissenschaft.de/wp-content/uploads/H/a/Halla-Illu_02_9CE1A389-7446-48AD-9A96-9B166EAA68E7-e1697551468633-990x647.jpg)
©Illustration: WM Keck Observatory/Adam Makarenko
When a star like the Sun expands into a red giant, it engulfs its nearby planets. However, astronomers have now discovered satellites past this final stage.
In around 7.5 billion years, the sun has used up the hydrogen supply in its central region. Then shrinks