Yesterday, April 12^th, marked the 50^th anniversary of the first manned space flight. During his 108-minute voyage, cosmonaut Yuri Gagarin completed an entire orbit of Earth in Russia’s first Vostok mission. And to commemorate that flight, a new space beer is currently being perfected and tested in various zero gravity environments.

Vostok “4-Pines Stout” is the first space beer to be developed, and is being done so in a collaborative effort between 4-Pines Brewery near Sydney and Saber Astronautics Australia. Here comes the (beer) science bit: According to the brewer’s website, Vostock is “a dry Irish style stout, presenting almost black, bearing a generous tan head. The aroma profile is of coffee, chocolate and caramel malts. These are matched on the pallet with a full-bodied, smooth finish and a balancing bitterness.” Sounds delicious to me!

An earth-friendly version of the stout is already widely available in Australia. However, making a beer suitable for consumption in space presents a variety of problems. The first is that the human tongue swells in zero gravity environments. This affects how our taste buds function. Secondly, the levels of carbonation needed in space are considerably lower than on our planet. Not to mention the bubbles don’t know which way is up, so forming a frothy head is tricky. Therefore to enjoy a tasty, cold, frothy pint whilst gazing down upon the globe, the beer itself needs to be carefully (and probably repeatedly) tested.

The only way to simulate “microgravity” without taking flight is to drop something from a 65-foot tall tower, imaginatively called a drop tower, and the only such tower in the southern hemisphere is at the Queensland University of Technology in Brisbane. So researchers Martin Castillo and company have been testing how beer behaves in a microgravity environment. Naturally, Australian students are quite keen to develop microgravity beer projects, (Castillo). Unfortunately the drop-test experiments don’t involve any taste testing, but I doubt any leftovers go to waste.

Back in February Vostok Stout was taste tested by an astronaut experiencing zero gravity in a plane flying in parabolic arcs. In this commonly used way of simulating space-like conditions, a specially modified Boeing 727 plane flies in stereotypical parabolas, which results in any passengers avoiding the gravitational pull of earth for periods of about 30 seconds at a time. During the flight, the taste-tester drank almost a liter of beer, and reported no ill effects. Drinking a carbonated beverage in that kind of environment is kind of like being shaken with bubbles in your belly, so clearly it was a critical test that Vostok passed with flying colors.

Hmm… do you think you burp or fart after drinking beer in space?

But why are these Aussies so interested in brewing the perfect space beer? Astronauts aren’t supposed to consume alcohol whilst on a mission, so it’s not like the International Space Station will be installing a bar. Well, starting in 2012, Richard Branson’s company Virgin Galactic will be offering trips into space for a bargain $200,000. Sounds like an expensive booze cruise, but I’m sure the price will come down eventually. What do you think is next? Space Veuve Clicquot?

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