This indicates that one or more supernovae must have occurred near the location where the Sun formed.
The calendar assumed that a year had precisely 365.
This is more than 100x the radius of Earth.
By the end of that phase—lasting approximately 500,000 years—the Sun will only have about half of its current mass.
The Dragon crosses Aries and Taurus and runs from early April to early May.
An , known as a , can sometimes be seen shortly after sunset or before sunrise.