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Some people think that it as been here as long as
time has existed. People also think that out solar
system has been here for 4.5 million years from now,
That means that our universe would be here for at
least two times as long as that.
The bible says that
the universe was created by
god. Some people thing this is
true but others think it was the
big bang which is the most
believable answer yet . The
big bang was little microscopic
ball that expanded over the
years to form out universe
In 1965 too scientist did a
experiment to see what the
temperature of the universe was, it
came out to be around 19 2.7281.
there is also different temperatures
in different places but it depends if it
is near a star
light minutes and light hour are
a much easier way to measure
the distances in space.
only few scientist use light
hours and light minutes as it is
much easier to use astronamal
units.
two lenses, which are thicker in the middle than at the edges. The objective lens brings light from a d
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How did early astronomers study the stars
before the telescope?
In early times, astronomy only comprised the
observation and predictions of the motions of objects
visible to the naked eye.
In some locations, such as Stonehenge, early cultures
assembled massive artefacts that likely had some
astronomical purpose.
in addition important factor in knowing when to plant
crops, as well as in understanding the length of the year.
The earliest telescope appeared in 1608 the credit was
given to Hans Lippershey.
of Alkmaar. Galileo used this design the following year.
In 1611 another Johannes Kepler described how a
telescope could be made with a convex objective and
eyepiece lens and by 1655 astronomers such as
Christiaan Huygens were building powerful but
extremely large and unwieldy Kepler an telescopes with
compound eye pieces that made it much easier to use.
Hans Lippershey is the earliest person documented to
have created this wonderful device.
A RADIO TELESCOPE is radio antenna used in
radio astronomy The same types of antennas are
also used in tracking and collecting data from
satellites and space probes. In their role they differ
from optical telescopes in that they operate in the
Radio telescopes are typically large dish antennas
used singly or in an array. Most radio telescopes are
placed on top of mountain or high areas of land.
Galileo is one of the most famous
astronomers in the world. Galileo
was born in pisa when he was
eight his family decided to move
away to florence where his dad
grew up however galileo decided
to stay back with Muzio Tedaldi
who was related to hisgalileos
mother by marrige
Galileo got in trouble with the
catholic church having being
charged for disagreeing with the
beliefs of the catholic church over
His theory's on the earths motion
he was put in prison even though
he was a very old and sick man
Galileo died in 1643 a being
lonely and sick man.
Maria Mitchell was born in 1818 and
died in 1889. Maria Mitchell was one of
the first female astronomers. She was
born in Nantucket Massachusetts
America and went to private schools all
her life.
She discovered a telescopic comet in
October of 1847. Maria Salmon Mitchell
was born on August 1st 1818 and she
grew up with 9 brothers and sisters
Maria Mitchell was also cousins with the
electricity maker Benjamin Franklin .
A new star begins as a
collapsing cloud of material
composed primarily of
hydrogen. And it forms
together to make brand new
star.
Constellation is patterns formed by groups of
stars many of which were named by ancient
astronomers which we still know them by today.
Twelve of the constellations are called the signs
of the zodiac. The 12 constellations are
....aeries, Taurus, Gemini, cancer, Leo, Virgo,
Scorpio, Sagittarius, Libra, Capricorn ,Aquarius,
Pisces.
nearest star to earth is the sun. The closest star to the solar system is
Proxima Centauri. The slowest travel to Proxima
Centauri would be by “ion drive propulsion “ which would take 81 000
years. This is solar powered ion thrusters , where electrical energy is
harvested from solar panels . It would take 81 000 years to travel the
4.3 light years from earth to proxima Centauri . That would be over
2,700 human generations !
The fastest travel would be by “ gravitational assists”
And would take 19,000 years. It is like the gravitational pull of the
sun. If a spacecraft was travelling at a speed of 240 000 km per hour it
would take 19 000 years (or over 600 human generations) to travel 4.3
light years . The fastest ( theoretical) would be “nuclear pulse
propulsion’” and would take 85 years. This is the possibility of using
the power of pulsed Nuclear explosions to provide huge
They seem to twinkle or charge their brightness ,
all the time. Most of the stars are shining with
steady light. The movement of air in the
atmosphere of earth causes the star light to get
slightly bent as it travels from the distance star
through the atmosphere down to us on the
ground . This means that some of the light
reaches us directly and some gets bent slightly
away. To our eyes, this makes the star seem to
twinkle.
The milky way is a galaxy it is a barred
spiral galaxy that is part of the local
group of galaxies.
It is one of the million galaxies in the
universe it might be hard to believe but
our solar system is only a tiny winy dot
in the middle of the milky way
Shooting stars or falling stars
the common name for the
visible path of a meteoroid as
it enters the atmosphere to
become a meteor in the earths
atmosphere.
Here are some extra
facts.....
A binary star is a star system of two
stars orbiting around their common
centre of mass .
The brighter star is called primary
and the other is its companion star or
secondary star.
A globular cluster is a spere shape of that
orbits a core as a satellite. Globular clusters are
very tightly bound by gravity which gives them
their spherical shapes and relatively high
stellar densities toward their centers. The
name of this category of star cluster is derived
from the Latin globulus—a small sphere. A
globular cluster is sometimes known more
simply as a globular.
A white dwarf is a small star made mostly
out of electron-degenerate. White dwarfs
comprise roughly 6% of all known stars
in the immediate solar neighbourhood
which mean there must be lots and lots
of stars out there
Neutron stars are a compact
object that are created in
cores of big stars. The core
of a star crushes together ,
every proton with a
corresponding electron
turning each electron-proton
pair into a neutron.
The neutrons ,sometimes
stops then collapses and
becomes a neutron STAR
A star turns
massinto a red giant when
its hydrogen fuel begins to run
out. The star's core shrinks and
the outer layers expand, cool,
and become less bright. A red
giant glows with a cool red
colour.
Nebulae is a cloud of
dust, Hydrogen gas
helium gas and plasma
gas . It is found in outer
space. There are a few
types of nebulas.
Really big stars become supergiants.
Supergiants become supernovas, which
are big exploding stars. The explosion
sends gas and dust into space to make
new stars. The core gets packed tighter
and tighter. Some cores then turn to iron
and become neutron stars. Some
supernova cores turn into black holes,
which swallow everything around them in
space. Not even light can escape from a
black hole.
A black hole is part a stars cycle in its life it is
called "black" because it absorbs all the light tha
hits it, reflecting nothing, just like a perfect black
body . A black hole can also form from super
novas.