Scientists accidentally discovered a giant ring-shaped cosmic megastructure that challenges our understanding of the Universe

• Scientists have discovered a giant ring-shaped structure in space, dubbed the Big Ring.
• The discovery challenges our understanding of the universe.
• The scientist who discovered it said it felt "surreal" after making the major discovery.

Scientists have discovered a massive ring-shaped structure in space that challenges our understanding of the universe.

The cosmic megastructure, dubbed the Big Ring, has a diameter of about 1.3 billion light-years and is among the largest structures ever observed. It appears to be roughly the size of 15 of Earth's moons.