Starship Asterisk*

[img3="Scientists applaud the first detection of a "handed" molecule, (propylene oxide) in interstellar space. It was detected near the center of our Galaxy in Sagittarius (Sgr) B2, a massive star-forming region. Credit: B. Saxton, NRAO/AUI/NSF from data provided by N.E. Kassim, Naval Research Laboratory, Sloan Digital Sky Survey"]https://public.nrao.edu/images/non-gall ... al/B2m.jpg[/img3][hr][/hr]

Like a pair of human hands, certain organic molecules have mirror-image versions of themselves, a chemical property known as chirality. These so-called "handed" molecules are essential for biology and have intriguingly been found in meteorites on Earth and comets in our Solar System. None, however, has been detected in the vast reaches of interstellar space, until now.

A team of scientists using highly sensitive radio telescopes has discovered the first complex organic chiral molecule in interstellar space. The molecule, propylene oxide (CH₃CHOCH₂), was found near the center of our Galaxy in an enormous star-forming cloud of dust and gas known as Sagittarius B2 (Sgr B2).

The research was undertaken primarily with the National Science Foundation's Green Bank Telescope (GBT) in West Virginia as part of the Prebiotic Interstellar Molecular Survey. Additional supporting observations were taken with the Parkes radio telescope in Australia.

"This is the first molecule detected in interstellar space that has the property of chirality, making it a pioneering leap forward in our understanding of how prebiotic molecules are made in the Universe and the effects they may have on the origins of life," said Brett McGuire ...

"Propylene oxide is among the most complex and structurally intricate molecules detected so far in space," said Brandon Carroll ... "Detecting this molecule opens the door for further experiments determining how and where molecular handedness emerges and why one form may be slightly more abundant than the other." ...

• Science (online 14 June 2016) DOI: 10.1126/science.aae0328