11.   Astronomers also said the findings could provide new insights into how dark matter affects galaxy formation.

12.   Astronomers know that the dark matter, whatever it may be, has to be there because of the way its gravitational pull affects visible things nearby.

13.   Astrophysicists have recently proposed many creative recipes for dark matter being combinations of ordinary and exotic matter.

14.   Astronomers have not given up on finding more ordinary matter that could be part of the dark matter.

15.   Bahcall said the new findings seemed to call out for some such radical solution to the mystery of dark matter.

16.   Barish thinks that gravity waves might help map this so-called dark matter for the first time.

17.   Before long, nearly every stargazer on earth had joined the cult of dark matter.

18.   Based on decades of indirect evidence, astronomers are all but certain that dark matter makes up the vast majority of all matter in the universe.

19.   Both dark matter and possibly dark energy originate from the earliest days of the universe, when light elements such as helium and lithium arose.

20.   Both sets of particles could contribute to the dark matter, and none of the stunning conclusions are in direct conflict with earlier experiments.