Please register to participate in our discussions with 2 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.
Astronomers have spotted the earliest known spiral galaxy, dating to just three billion years after the Big Bang.
Theories of galaxy formation held that the Universe was still too chaotic a place to allow such a perfectly formed or "grand-design" spiral to form.
It should take far longer for gravity to bring matter into thin, neat discs.