Relative to solar-system timescales, Saturn’s rings are believed to be quite young, estimated to be only 100–400 million years old. This estimate is based on the remarkable purity of the material composing the rings.
Astronomers have taken the first close-up picture of a star outside of the milky way. WOH G64, also known as the “behemoth star” has been imaged using the European Southern Observatory’s Very Large Telescope (ESO’s VLT).
When observing our closest neighbouring stars, astronomers quickly realised that our Sun stands out from its peers of similar age, possessing a notably greater metallicity.