NASA's Webb Space Telescope discovered 3 rare galaxies that can help astronomers study the cosmic dark ages

• NASA's James Webb Space Telescope observed three galaxies in the universe's very early stages.
• The galaxies were likely forming around when our universe was 400 million to 600 million years old.
• Studying early galaxy and star formation helps astronomers better understand the cosmic dark ages.

NASA's James Webb Space Telescope detected three galaxies as they were likely forming during the universe's infancy, the space agency said Thursday.