Many billions.
There are primarily five types of nebulas: planetary nebulas, reflection nebulas, emission nebulas, dark nebulas, and supernova remnants. Each type of nebula has distinct characteristics and origins.
Nebulas are interstellar clouds consisting of dust, hydrogen, helium and other ionized gases. Nebulas vary in size, so some are bigger than Earth, and others are not.
it has been around for many years.
macys has been around for 150 years
it has been around for many many years and has been passed down the family
Petunias have been around for many years. They have been used by gardeners for many years.
It has been around for, til B.C. years. so for a long time.
145 years
52 years
87 years
Christmas has been around 2011 years, since the birth of Jesus Christ.
450 million years