A new map reveals radio waves from tens of thousands of galaxies
The picture lifts a veil on the history of star formation in the universe
![Southern Hemisphere](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2019/12/121819_cc_radiogalaxymap_feat.jpg?fit=1028%2C579&ssl=1)
In this image from a small patch of sky in the Southern Hemisphere, nearly every point of light is radio emission from a galaxy that’s churning out stars. The handful of hourglass-shaped blobs are fountains of gas spewing away from supermassive black holes in the centers of some galaxies.
SARAO, NRAO, AUI, NSF