In the Triangulum Galaxy, over the course of a hundred thousand years, three supernova exploded from the same star cluster. The remains of these explosions have expanded into a trio of giant bubbles nested within each other.
Gravity turns gas into stars. Today’s astrobite introduces a new way to study gravity’s pull in a molecular cloud – the birthplace of new stars.
M31 discovered to be blowing vast bubbles of gamma rays, just like our own galaxy.
Molecular clouds, where new stars are born, are made of two components: gas and dust. The gas is mostly hydrogen, and the dust is made of elements crucial for forming planets and people, like silicon and carbon. Today’s paper shows that these two components behave very differently in a simulated molecular cloud. This could have exciting consequences for the growth of dust and the formation of stars and planets.
How many spiral arms does the Milky Way have? You might be surprised to learn that astronomers are still not completely sure.
Molecular clouds are turbulent. Today’s paper explores how this fact affects the relationship between star formation rate and density from local clouds to distant galaxies.