A giant cloud of alcohol drifting in deep space
Deep in the center of our Milky Way galaxy, inside a star-forming region called Sagittarius B2, lies a massive molecular cloud. This cloud contains vast quantities of ethyl alcohol—the same type of alcohol found in drinks on Earth. The cloud contains enough alcohol to fill astronomical numbers of pints.
A Colossal Reservoir at the Center of the Galaxy
Sagittarius B2 is one of the most massive and chemically complex giant molecular clouds in the Milky Way. Located roughly 120 parsecs, or nearly 400 light-years, from the dynamic center of our galaxy, this immense cloud of gas and dust spans dozens of parsecs across. It sits in close cosmic proximity to Sagittarius A*, the supermassive black hole anchoring the galactic core. Within this turbulent region, dense pockets of interstellar material collapse under gravity to form new generations of stars.
The sheer scale of Sagittarius B2 is difficult to overstate. Its total mass is estimated to be several million times the mass of the Sun, packed into a relatively compact volume compared to the vast expanses of typical interstellar space. The cloud is structured into several dense star-forming cores, commonly designated as Sagittarius B2 North, Main, and South. These cores are packed with young stellar objects, hot molecular cores, and compact regions of ionized gas, creating energetic environments that drive extraordinary chemical activity.
The Origin of Cosmic Alcohol
Among the vast assortment of chemical compounds drifting through Sagittarius B2 is ethanol, the exact chemical compound that constitutes drinkable ethyl alcohol on Earth. Alongside ethanol, astronomers have identified simpler alcohols like methanol (wood alcohol) and more reactive forms like vinyl alcohol. The total amount of ethanol spread across the cloud is astronomically vast, containing enough molecules to fill planetary-scale volumes if condensed into a liquid state.
Despite these staggering totals, the alcohol in Sagittarius B2 is not a free-flowing cosmic ocean. In interstellar space, molecules are distributed across billions of cubic kilometers of near-vacuum. If a vessel were to fly through the cloud, collecting a single pint of liquid alcohol would require vacuuming up millions of cubic kilometers of space. The alcohol exists as a low-density gas mixed with hydrogen, helium, carbon monoxide, and microscopic grains of silicate and carbonaceous dust, making the mixture far more tenuous than any laboratory vacuum achievable on Earth.