600 light-years

Probably the most colourful vista in the sky is the region seen around the red supergiant, Antares. This star is about 700 times the diameter of our Sun, and in our solar system such a sun would have swallowed all the planets as far out as Mars (including us!). Behind Antares there are colourful areas of hydrogen gas (pink) and dust (yellow). At right is the triplet star Rho Ophiuchi, sitting in its own glowing blue mantle of gas.

Credit: Image made in visible light by Adam Block.

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