The Orion Trapezium is a group of four very bright and massive stars located at the center of the Orion Nebula, a star-forming region in the constellation of Orion. These stars are named Theta 1 Orionis A, B, C, and D.
The Orion Trapezium is believed to have formed from a collapsing molecular cloud of gas and dust, which is a common process in star formation. As the cloud collapsed, it formed multiple protostars, four of which eventually became the Orion Trapezium stars.
A pre-stellar body is a dense and cold region of gas and dust that has not yet formed into a star. This is the earliest stage of star formation, and it is believed that pre-stellar bodies eventually collapse and form protostars.
Scientists have used observations from various telescopes, such as the Hubble Space Telescope, to study the Orion Trapezium and its surrounding nebula. They have found evidence of a pre-stellar body in the form of a rotating disk of gas and dust around the stars, which is a common characteristic of protostars.
No, the Orion Trapezium stars have not exploded from a pre-stellar body. The term "exploded" may be misleading, as the stars are still in the process of formation and are not considered fully formed yet. They are still surrounded by gas and dust, and it is expected that they will continue to grow and evolve over time.