How did they discover a sugar molecule many light years away?

Update: A sugar molecule linked to the origin of life was discovered in a potentially habitable region of our galaxy. The molecule, called glycolaldehyde, was spotted in a large star-forming area of space around 26,000 light-years from Earth in the less-chaotic outer regions of the Milky Way. This suggests the sugar... show more A sugar molecule linked to the origin of life was discovered in a potentially habitable region of our galaxy.

The molecule, called glycolaldehyde, was spotted in a large star-forming area of space around 26,000 light-years from Earth in the less-chaotic outer regions of the Milky Way. This suggests the sugar could be common across the universe, which is good news for extraterrestrial-life seekers.
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