New-found TRAPPIST-1 is older than our Solar System: Study
US-based researchers have calculated that the newly-discovered TRAPPIST-1, a system of seven Earth-like planets 40 light-years away, is up to 9.8 billion years old, twice as old as the solar system. It was earlier thought to be only 500 million years old due to host star's low mass. Scientists are unclear what the older age means for the planets' habitability.