Massive stars have very strong radiation-
driven
stellar winds
Hubble Space Telescope
image of
η
Car; an extreme
example of a hot star wind
What is a stellar wind?
It is the steady loss of
mass from the surface of a
star into interstellar space
The Sun has a wind (the
“solar wind”) but the
winds of hot stars can be
a
billion
times as strong
as the Sun
’
s