Observational Constraints on Inflation

Observational Constraints on Inflation

Standard cosmological scenarios propose that the Big Bang was followed immediately by a period of accelerated expansion, or inflation. Inflaton has two roles in shaping the Universe. First and foremost, the rapid growth stretches everything in the early Universe and...
Stellar Accelerations and Dark Matter

Stellar Accelerations and Dark Matter

For astronomers, looking at the sky can be like watching an unfamiliar sport on TV. We can’t make sense of what we see, but is it because we don’t know the rules, or that we can’t see all the players? (Or, worst case, we can’t see the players...