by PhilipJ on 29 March 2006
Via Seed, astronomers have discovered a nebula at the centre of our galaxy that looks like DNA!
The proposed explanation?
The cosmic double helix is probably made up of clouds of ionized dust hovering around a pair of magnetic field lines, Morris [lead author of the paper, subscription required] said, and a wave traveling up the field lines from the center of the galaxy created the twisting double helix shape.
Morris hypothesizes that the wave traveling up the magnetic field lines and creating the double helix nebula is a disk of gas at its base, made to spin by the gravity of the black hole at the center of our galaxy. The double strands of the nebula are created by the dumbbell-like structure of the spinning disk, which concentrates the magnetic field lines in two areas, he saidâ€”otherwise, the nebula would be cylindrical.