planetary nebula
Tag archives for planetary nebula
Messier Monday: The Owl Nebula, M97
Posted by Ethan on January 28, 2013 
“A wise old owl lived in an oak The more he saw the less he spoke The less he spoke the more he heard. Why can’t we all be like that wise old bird?” -The Immortal Poet Bromley To your naked eye, the night sky appears littered with thousands of individual points of light: the…
At the end of their lives, stars glow hotter than ever!
Posted by Ethan on October 11, 2012 
“A colour is a physical object as soon as we consider its dependence, for instance, upon its luminous source, upon other colours, upon temperatures, upon spaces, and so forth.” -Ernst Mach Our Sun, like all Sun-like stars, will come to the end of its life someday. All the hydrogen fuel in its core will eventually…
The lives and deaths of Sun-like stars
Posted by Ethan on October 1, 2012 
“Man alone is born crying, lives complaining, and dies disappointed.” -Samuel Johnson But the stars, as opposed to humans, are born shining, with hundreds (or more) of brothers and sisters, shine ever more brightly over their lifetimes, and die in spectacular fashion. As far as we can tell, here’s the past, present and future story…
Practically Everything Leaves Something Behind
Posted by Ethan on May 28, 2012 
“Everyone must leave something behind when he dies, my grandfather said. A child or a book or a painting or a house or a wall built or a pair of shoes made. Or a garden planted. Something your hand touched some way so your soul has somewhere to go when you die, and when people…
