The Lagoon Nebula in Hydrogen Sulfur and Oxygen . ... Credit Copyright: John Nemcik Explanation: The majestic Lagoon Nebula is filled with hot gas and the home for many young stars. Spanning 100 light years across while lying only about 5000 light years distant, the Lagoon Nebula is so big and bright that it can be seen without a telescope toward the constellation of the Archer ( Sagittarius ). ... Star formation continues in the Lagoon Nebula as witnessed by the many globules that exist there. ...