Welcome to “Dave’s universe,” the new blog by Dave Eicher, editor of Astronomy magazine,
and astronomy and science popularizer. I’ll be bringing you new
thoughts about astronomy, cosmology, nature, the hobby of astronomy, the
sometimes disturbingly pseudoscientific culture we live in, and other
miscellany. I hope you’ll enjoy it!
Over the past century, astronomers have deduced several ways to estimate the age of the universe. By using each of these me...