Astronomers are marveling at a distant galaxy surrounded by two giant, intersecting rings of radio light in space , each about 300,000 light-years wide.

The discovery, made by volunteers in the RAD@home Astronomy Collaboratory citizen-science program in Mumbai, is what's known as — and we're not kidding — an "Odd Radio Circle." The rings both sit within an even bigger radio cloud that stretches nearly 3 million light-years.

These circles, sometimes called ORCs for short, were only found six years ago, and their origin is still a mystery. They may be shockwaves from merging black holes or galaxies . Most are 10 to 20 times larger than the Milky Way, but only a handful are known so far.

The newly reported ORC, named RAD J131346.9+500320, is the most distant and

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