The discrepancy between what was expected and what has been observed has grown over the years, and we're straining harder and harder to fill the gap.

- Jeremiah P. Ostriker

If you take a galaxy and try to make it bigger, it becomes a cluster of galaxies, not a galaxy. If you try to make it smaller than that, it seems to …

- Jeremiah P. Ostriker

Biology has tended to be an observational science and deriving things from first principles has not been possible in the past but I hate to predict t…

- Jeremiah P. Ostriker

There's no observational evidence that I know of that indicates electric and magnetic forces are important on cosmological scales.

- Jeremiah P. Ostriker

There are reasons, increasing in number and quality, to believe that the masses of ordinary galaxies may have been underestimated by a factor of 10 o…

- Jeremiah P. Ostriker