This sequence of Hubble Space Telescope views represents an imagined three-dimensional flight across the core of the Lagoon Nebula, located about 4,100 light-years away. (Credit: NASA/ESA, D. Player and G. Bacon)

This sequence of Hubble Space Telescope views represents an imagined three-dimensional flight across the core of the Lagoon Nebula, located about 4,100 light-years away. (Credit: NASA/ESA, D. Player and G. Bacon)