The Hubble photo shows rung-like features that could be easily mistaken for a ladder or a spider web.
But the Red Rectangle is neither of those and is instead a large nebula or cloud of gas ejected by a dying star.
NASA said: “Hubble’s sharp picture shows that the Red Rectangle is not really rectangular, but has an overall X-shaped structure, which astronomers interpret as arising from outflows of gas and dust from the star in the centre.
“The outflows are ejected from the star in two opposing directions, producing a shape like two ice-cream cones touching at their tips.
“Also remarkable are straight features that appear like rungs on a ladder, making the Red Rectangle look similar to a spider web, a shape unlike that of any other known nebula in the sky”
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