14Mln-Year-Old Process of How Milky Way's Enigmatic Void Was Formed Is Explained
The results showed that the Local Bubble was created around 14 million years ago when a series of stellar explosions - known as supernovae - occurred. These explosions pushed interstellar gas outwards, creating a bubble-like structure with a surface that's ripe for star formation.
Some 14 million years ago a series of supernovae went off, pushing interstellar gas outwards and creating a bubble in space. The Sun travels through this Local Bubble on its journey through the Milky Way. The expansion of the bubble drives star formation: https://t.co/HONVsF6zoC pic.twitter.com/eksT015JNn— ESA Gaia (@ESAGaia) January 12, 2022
Scientists say the Local Bubble continues to grow at about 4 miles (6.4km) per second and is shaped as a peanut. Their next plan is to find other bubbles inside the Milky Way and examine their history, something researchers say will help them to understand better the formation of stars and evolutionary history of our galaxy.