What's in a 'Space Hamburger'? Ingredients for Life, It Seems

A young protostar that bears a striking resemblance to a giant "space hamburger" contains the molecular building blocks of life, researchers discovered.

What astronomers call the "space hamburger" is actually a cloud of gas and dust that is collapsing to form a baby star. That baby star will eventually be surrounded by planets, much like Earth's own solar system. The hamburger is called Herbig-Haro object 212, or HH 212.

Using the Atacama Large Millimeter/submillimeter Array (ALMA) in Chile, astronomers have identified complex organic molecules in the atmosphere around the protostar's accretion disk — the space hamburger's giant bun and patty, if you will. The types of molecules discovered in the protostar likely played a key role in the development of life on Earth, the researchers said. This finding suggests that the building blocks for life begin to form in the earliest phases of star formation, long before planets have the chance to form around their central star. [Meet ALMA: Amazing Photos from Giant Radio Telescope]

(a) Observations from the ALMA telescope in Chile revealed spinning jets of material (green) ejecting from inside the accretion disk around a young star known as the "space hamburger." (b) A zoom-in to the central dusty disk: The asterisk marks the position of the protostar. A size scale of Earth's solar system is shown in the lower right corner for comparison. (c) Atmosphere of the accretion disk detected with ALMA: In the disk atmosphere, green is for deuterated methanol, blue for methanethiol and red for formamide.
(Image: © ALMA (ESO/NAOJ/NRAO)/Lee et al.)

The atmosphere around the space hamburger contains methanol (CH3OH), deuterated methanol (CH2DOH), methanethiol (CH3SH) and formamide (NH2CHO), which "have been proposed to be the precursors for producing biomolecules such as amino acids and sugars," the researchers said in a statement.

An illustration showing the atmosphere of complex organic molecules in the atmosphere above and below the accretion disk (in blue). In the molecular models, white is hydrogen (H), blue is deuterium (D), black is carbon (C), red is oxygen (O), purple is nitrogen (N), and yellow is sulfur (S).
(Image: © Lee, C.F.)

"It is so exciting to discover complex organic molecules on an accretion disk around a baby star," Chin-Fei Lee, a researcher at the Academia Sinica Institute of Astronomy and Astrophysics in Taiwan, who led the study, said in the statement.

"When such molecules were first found in the protoplanetary disk around a star in a later phase of star formation, we wondered if they could have formed earlier. Now, using ALMA's unprecedented combination of spatial resolution and sensitivity, we [can] not only detect them on a younger accretion disk, but also determine their location," Lee said. "These molecules are the building blocks of life, and they are already there in the disk atmosphere around the baby star in the earliest phase of star formation."

Scientists estimate that the space hamburger is only 40,000 years old, which pales in comparison to Earth's 4.5 billion-year-old sun. The space hamburger's radius is about 60 astronomical units, or 60 times the average distance between the Earth and the sun.

HH 212 lies about 1,300 light-years away from Earth, so if life does eventually form there, even intelligent life, Earthlings will have nothing to worry about. The space hamburger would still be much too far away for any aliens (or humans) to travel between the two solar systems. Humanity would just have to sit back and watch life flourish from afar.

Email Hanneke Weitering at hweitering@space.com or follow her @hannekescience. Follow us @Spacedotcom, Facebook and Google+. Original article on Space.com.

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