- At 11.2 billion years old, it is the oldest star with Earth-sized planets ever found and proves that such planets have formed throughout the history of the Universe.
- The star, named Kepler-444, hosts five planets smaller than Earth, with sizes varying between those of Mercury and Venus.
- This tells us that planets this size have formed for most of the history of the universe and we are much better placed to understand exactly when this began happening.
Ancient star system reveals Earth-sized planets forming near start of universe
1. 28. 15 by Alex Klokus