We're not sure how the rings work or how they formed, but there are a few theories.
This observation means astronomers can now develop and test theories that explain how high-mass stars gain their mass.
Matt Agnew is on the hunt for love as star of the new Bachelor Australia series. But whoever he picks (and he already has, apparently) will have to compete with TESS. So who, or what, is TESS?
The very hottest stars actually glow blue.
Technology has redefined astronomy. Pioneering telescope designs have allowed astronomers to unravel ever more complex questions about the universe and its mysteries.