Ever wonder how full our Universe is?

The average density of the visible universe is… That works about the weight of 1 proton per four cubic meters (141 cubic feet).  In other words, the universe is basically a huge expanse of empty space.  You happen to exist in the (extremely rare) exception to this rule, on an Earth that weighs in at […]

read more

Grand Canyon: don’t forget to turn off the water…

Reposted from a retired blog. Originally published October 6, 2007 So, how long did it take the Colorado River to carve out the Grand Canyon?  The current, most common scientific response is that it took 5-6 million years.  I’m no geologist or hydrologist, but I assume science bases that estimate on erosion rates of the […]

read more

Chance of a Lifetime

Reposted from a retired blog. Originally published December 7, 2007 It was freezing cold this morning (OK, so maybe not literally… it was 36 degrees outside, and when I forced myself out of bed this morning it was 53 in the house.  For me that is freezing), and I have been sitting as close to […]

read more

Is the Universe billions of years old?

Modern cosmology explains the universe is 13.7 billion years old, starting from the Big Bang.  Following a period of “Inflation” where the size of the universe expanded exponentially (it grew by a factor of 1,000,000,000,000,000,000,000,000,000,000 times) in a tiny fraction of a second, the universe has been expanding ever since.  The Big Bang theory is […]

read more