| Modulo | Universe

Cosmology, Astronomy and Abstract Mathematics

Sirius Rising

Leave a comment

sirius-2080966_960_720-2

The dog star ‘Sirius’ is now high and visible in winter skies looking South. Draw a line down and left from Orion’s belt and you can’t miss the brightest star in the night sky.

Sirius means ‘scorching’ and was considered a second Sun of sorts to many ancient cultures. Its incredible brightness is due to its close proximity. At only 9 light years away it’s the 5th closest star system to our Sun and a fairly typical hydrogen fusing main sequence star likely to live a long stable life of several billion years.  This is in contrast to short lived giant stars like Rigel and Betelgeuse, which are very distant and appear bright  due to their bloated sizes and massive energy output.

Sirius
Procyon is sometimes mistaken for Sirius but it rises earlier, hence its name which means ‘before the dog’.  The Arabs told a tale linking Procyon and Sirius as two sisters, who became separated by a great river (the Milky Way) while searching for their missing brother.

Leave a Reply

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 )

Google+ photo

You are commenting using your Google+ 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 )

w

Connecting to %s