Cosmic Calendar: Emergence of our sun

The Sun by the Atmospheric Imaging Assembly of NASA's Solar Dynamics ObservatoryOn Carl Sagan’s Cosmic Calendar (illustrated as a comic strip here), which maps the entire history of our cosmos onto a single year, September is particularly interesting.

Since the Big Bang in January (13.7 bya or billion years ago), the universe has been gradually increasing in organizational complexity.  Little of local significance has occurred, though, apart from the formation of the Milky Way galaxy in May.

Now, in September, a good three-fourths of the way through the story, our little corner of the cosmos gets interesting.  On the 1st (4.57 bya), our own sun emerges.

Advertisements

Comment

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: