Feb 08, 2011 20:28
The light emitted by stars is already in the past; it takes so long for light to travel and reach the human eye. So it's possible that the stars we perceive to be so beautiful in the night sky have already died many light years ago.
I learned this in Physics 10 earlier this afternoon. And after the crash lesson on astronomy, I feel like a microbe stuck on the dot called earth, which is a speck beside the sun, which in turn is a grain beside the biggest star (VY Canis Majoris), which is just a period in its galaxy, and there are so many galaxies so that our Milky Way looks like a brush stroke in the humongous canvas of the universe.
Another thing I found interesting is that there's too much probability that life exists outside our solar system. How cool is that? I used to think that alien movies were just that--simply sci-fi--but after hearing the scientific bases, hey, who knows? Anything's possible.
Mercury doesn't have an atmosphere. Pluto is considered a dwarf. The star on Orion's ankle might already be dead. The star Sirius is bigger than the sun. Even space grains contain gravity. Our sun is 4.5B years old, which is young for its lifetime. And I'm wondering how in the world I could've let go of my interest for astronomy when I reached twelve years old.
light,
astronomy,
stars