Stellar explosions are usually associated with supernovae, the spectacular deaths of stars. New ALMA observations of the Orion Nebula provide insights into explosions at the other end of the stellar life cycle, star birth. This image shows the remains of a 500-year-old explosion from the birth of a group of massive stars; star formation can be a violent and explosive process too.
The colors in the ALMA data represent the relative Doppler shifting of the millimetre-wavelength light emitted by carbon monoxide gas. Blue data represents gas approaching at the highest speeds; the red data is from gas moving toward us more slowly.
The millimetre wave data is superimposed over optical and near-infrared images from the Gemini South and the ESO Very Large Telescope. The famous Trapezium Cluster of hot young stars appears towards the bottom of this image. The ALMA data only covers the central portion of the picture.
Image Credit: ESO