The brightest star in the image - supergiant HD 93129Aa - is two and a half million times brighter than the sun, and 80 times as massive.
This composite image of the star cluster Trumpler 14 was made with data taken by NASA's Hubble Space Telescope.
"This region of space houses one of the highest concentrations of massive, luminous stars in the entire Milky Way - a spectacular family of young, bright, white-blue stars", European Space Agency (ESA) officials wrote in a description of the photo.
ESA has estimated that the stars have only a few million years of life left before they explode as supernovae. The blast waves will trigger the formation of a new generation of stars inside the nebula in an ongoing cycle of star birth and death.
Open clusters are groups of stars, especially very bright ones, that formed out of the same molecular cloud and are loosely gravitationally bound to one another.
'Despite their youth, these stars are making a huge impact on their environment.
This composite image of Trumpler 14 was made with data taken in 2005-2006 with Hubble's Advanced Camera for Surveys. But the most prominent one is Trumpler 14 and is even the brightest in the image. "They are literally making waves", the press release states.
These stars release high speed particles from their surfaces, where the winds are dispersed into space.
The researchers averaged that Trumpler 14 contains about 2000 stars, whose sizes are from less than one-tenth to several tens of times the mass of the sun. In addition to triggering intense X-ray bursts when they plough into gas and dust outside the cluster, the winds also carve out cavities that can become nurseries for new stars. Astronomers have observed this star to be moving through space at some 350,000 kilometers per hour, sculpting the surrounding clumps of gas and dust as it does so.
With a surface temperature of over 50,000 degrees Kelvin, HD 93129Aa is one of the hottest O-type stars in the entire Milky Way.