Constellations
Constellations are
formations of stars in the sky that are believed to create certain
pictures. If
you look on a clear night you will be able to spot some of them. It is
believed
it was these constellations that helped travelers at night be able to
go the
right direction. You may be able to come up with your own pictures in
the sky
at night just as a person does with the formations of clouds.
Yet there are many
great constellations that have been sighted by man and they are part of
history. There are a total of 88 recognized constellations in the sky.
Most of
them are linked to some type of mythological story. In fact, it is
believed
that it was the discovery of these constellations that often lead to
magnificent tales being told about them.
The most well known
and easiest to spot of all the constellations is the Big Dipper and the
Little
Dipper. Many people love the story of Draco
who was said to be the last of the great dragons. He shared his heart
with an
evil boy who was king so the brave dragon had to die to save the people.
Many people also
love
the stories with Pegasus who was a
horse who had wings to fly. She is often part of the stories with Perseus who battles with Medusa and wins.
The Big Bear and Little Bear are also well known constellations that
people
search for. With many of them you will only be able to see them at
certain
times of the year. This is when they will line up for the images to be
outlined
in the sky.
Should you have an
evening to spend gazing up at the stars, try to look for the various
constellations?
It can be very fun to do and you will find that once you locate one you
can
usually find it again with ease the next time. You can get an astronomy
book
too that will help to guide you in your initial search for them. You
can also
find out more about the legends behind each of the different
constellations
that you find in the sky.
When you seen one
moving rapidly it is falling from the sky. It will never reach the
Earth though
as they gases from it burn up long before then. It is tradition to make
a wish
when you see a falling star. How well you are able to see the stars at
night
with the naked eye depends on the cloud cover as well as the pollution
in your
area.
Many of the stars
are
billions of years old according to the research that experts have
conducted on
them. The oldest one is believed to be just over thirteen billion years
old.
The sun is the largest star out there and one that is bright enough to
burn
even in the daylight. Stars are the formation of balls of gas that are
able to
stay in place due to the way gravity works in space. They are
classified by
age, their size, and the temperature.
While stars may
look
like nothing more than twinkling diamonds in the sky, they are
certainly much
more complex than that. They are full of gases and they are full of
energy. The
heat given off from a star can be more than 500,000 degrees Fahrenheit.
Super giants are a
classification of stars that have been categorized based on their large
mass.
However, those stars that have a large mass tend to burn much faster
than
others. This is why many types of stars can live for billions of years
while a
super giant will not have as long of a lifespan. It is believed that
the first
real stars in space were super giants. As more gases were collected
there other
types of stars were able to form and survive as well.
Super giants
don’t
have any hydrogen found in their core, and this is what sets them apart
from
other types of stars. Some types of stars will use up their hydrogen
and then
change categories. They will then develop more than ten times their
original
mass. It is very difficult for that exact amount to be determined
though.
Super giants are
easy
to spot as they will have red in them. This is due to their large mass
as well
as to the fact that they burn so hot. Some of them may become so hot
that they
explode in space. Some experts theorize that the explosion of super
giants is
what creates black holes that are found to exist in areas of outer
space.
There has been
plenty
of work done to examine the super giants from the inside out. They
consist of
several layers of materials. The outer layer is a protective shell and
though
it contains helium it isn’t actively doing anything. The next
layer has helium
that is fused with carbon. There will be several layers of this with a
super giant
until you reach the core. The core consists of iron.
As the super giant
continues to burn at very hot temperatures, the outer layers will burn
away.
Once only the iron is left the star has no way to make any more energy.
Within
a couple of weeks it will completely be burned out.
Neutron stars are
the
result of other stars that have collapsed due to their own heat. They
are
extremely hot stars that are very small. They are merely pieces of what
was
once a very large star. The size of the pieces that form the neutron
stars
though can vary greatly in size. This process was first documented in
1932 Sir
James Chadwick. His information regarding neutron stars resulted in him
winning
the Nobel Prize for Physics in 1935. It was considered to be quite a
remarkable
breakthrough.
It is believed that
neutron stars move very quickly through space. What is fascinating is
that most
of them have a rotation that they adhere to. This is due to the
gravitational
pull that is found from the energy within the neutron stars. You can
get dizzy
watching them as they can rotate at a speed of hundreds of times each
second.
In order for researchers to define the rotation they have to record it
and slow
it down for viewing.
Most neutron stars
don’t last for very long due to the very small amount of
energy that they
contain. It is estimated that there is about 2,000 of them at any given
time
found along the Milky Way. It can be hard to really research them due
to the
fast life they have from start to finish and their speed.
From what has been
gathered
about neutron stars though they are very complex in how they operate.
They
initial development of them is very simple but that is where it ends.
They seem
to gravitate to areas where White Dwarf stars are due to their
gravitational
pull. The neutron stars have very little gravitational pull on their
own and so
they tend to want to become a part of what other stars have to offer.
Neutron stars are
said to have a mass that is 1 ½ times of the sun. If the
neutron star was to be
on Earth it would weigh about a billion tons for each tablespoon of it.
That is
an amazing amount of weight and when you consider how they spin around
in space
it definitely shows us the difference between our gravitational pull
and what
is out there.
Stars are made up of
gases and energy that they use for fuel. The brighter a given star is
the
faster it will burn up the amount of energy that it has available. Once
they do
so they are categorized as White Dwarf stars. They have burned off the
outer
layers of it and so all that is left is the very hot center of the star
called
the core. It can continue to burn in this form for at least another
million
years or so.
The first written
documentation of what is classified as a White Dwarf star was found to
be dated
back to 1783. Even though they didn’t have a name for it they
were able to
document information about what they were finding. There were two of
them found
and the pair was called Eridani B and Eridani C.
They are often very
large stars that you will find in the sky. That make since the larger
stars
will be burning up more of their energy than the smaller ones. They are
very
interesting to researchers and a great deal about them still remain
unknown.
They are believed to be the densest type of stars in the universe.
They also believe
that White Dwarf stars have a very similar mass to that of the sun.
They are
also believed to be larger in size than the entire Earth. Most people
don’t
realize that such large forms of stars are out there. Most of us just
think of
the sun as a very large star and then the rest of them as very small
since that
is how we see them from the Earth. Researchers believe that about 6% of
all of
the stars in the sky fit the profile of being a White Dwarf.
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