We've known for a long time that the universe is expanding. But about 15 years ago, my colleagues and I discovered that it is expanding faster and faster. That is, the universe is accelerating, and that was not expected, but it is now attributed to this mysterious stuff called dark energy which seems to make up about 70 percent of the universe.
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Adam Riess:
We're really just the frosting on a cake and we don't know what's inside the cake.Adam Riess:
I think the mystery of what's out there in the universe is just very compelling.Adam Riess:
It's everywhere, really. It's between the galaxies. It is in this room. We believe that everywhereAdam Riess:
Your chemistry high school teacher lied to you when they told you that there was such a thing as aAdam Riess:
We look at distant exploding stars called supernovae, and we've developed techniques to measure howAdam Riess:
Einstein wrestled with a problem back before we even knew the universe was expanding, and he was loAdam Riess:
Dark energy is incredibly strange, but actually it makes sense to me that it went unnoticed, becausAdam Riess:
We know there is gravity because apples fall from trees. We can observe gravity in daily life. If wAdam Riess:
Until the 1990s, there were few reliable observations about movement at the scale of the entire uniAdam Riess:
During my time at Watchung Hills Regional High School, I was fortunate to have a number of teachers