 "A star is a massive, luminous ball of
plasma that is held together by
gravity. The nearest star to
Earth is the
Sun,
which is the source of most of the
energy on Earth. Other stars are visible in the night
sky, when they are not outshone by the Sun. Historically,
the most prominent stars on the
celestial sphere were grouped together into
constellations, and the brightest stars gained proper
names. Extensive
catalogues of stars have been assembled by astronomers,
which provide standardized
star designations."Source:
Wikipedia
"Quick, how many stars are there in the Milky Way.
You might be surprised to know that there are
200-400 billion stars in our galaxy. Each one is a
separate island in space, perhaps with planets, and
some may even have life. But then, there could be as
many as 500 billion galaxies in the Universe, and
each of which could have as many or more stars as
the Milky Way. Multiply those two numbers together
and you’ll see that there could be as many as 2 x 1023
stars in the Universe. That’s
200,000,000,000,000,000,000,000."
Source:
Universe Today |
