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Transcript 
Characteristics
Facts & figure
Shape
Spherical
Size ( diameter )
1.4 milion KM ( 109 x Earth’ s
diameter )
Composition
About 76% hydrogen, 22%
helium, iron , nickel , silicon ,
and carbon make up the
remaining 2% by mass.
Mass
1.989 x 10( 30) kg ( 330 000 x
Earth’s mass )
Density
1.41 gcm (-3) ( compared with
density of water )
Age
About 4500 milion years
Distart from Earth
149 680 000 km
Gravitational force
28 x earth’s gravity
Surface temperature
6000 *C
Core temperature
1.5-2.0 milion *C
The Sun
Effect s of the sun’s
phenomena
on the Earth
Generation Of Energe By The Sun
The sun’s energy generated from deep within the core of the sun
Temperature and pressure : extremely high
Nuclear fusion takes place
Hydrogen
helium
huge amount or energy
THE
SUN’S
ENERGY
Galaksi
Galaxies
• Galaxies are giant structures that contain
hundreds of billions of stars, Oh, by the
way…There are billions of galaxies in the
universe
• Galaxies contain single stars, double stars,
star systems and lots of gas and dust
between the stars.
• Astronomers classify most galaxies into three
main categories:
– spiral galaxies,
– elliptical galaxies,
– irregular galaxies
Spiral Galaxies
• Spiral galaxies have arms that spiral
outward, like pinwheels
http://zoo1.galaxyzoo.org/images/
tutorial/example_face_on_spiral.jpg
http://www.spacetoday.org/images/Hubble/
HubbleBeauty/NGC1512BarredSpiralGalaxy.jpg
The Milky Way
• Our solar system exists in the Milky Way
galaxy, and is about 25,000 light-years away
from the center of the Milky Way
• Our solar system is about two-thirds of the
way out on one of the spiral arms of the
Milky Way
• We can’t see the center of the Milky Way due
to the massive cloud of gas and dust between
the sun and the center
The Milky Way
http://abyss.uoregon.edu/%7Ejs/images/milky_way_large.jpg
The Milky Way
http://www.crystalinks.com/galaxymilkyway.jpg
Elliptical Galaxies
• Elliptical galaxies look like flattened
balls
• Have little gas and dust between the
stars so new stars can not form
– Ellliptical galaxies only contain old stars
http://photojournal.jpl.nasa.gov/
jpegMod/PIA08696_modest.jpg
Elliptical Galaxy
http://zuserver2.star.ucl.ac.uk/%7Eidh/apod/image/0406/m87_cfht.jpg
Irregular Galaxies
• Some galaxies don’t have a regular shape,
they are called irregular galaxies
• The Large Magellanic Cloud is an irregular
galaxy
http://www.nasa.gov/images/content/
159426main_image_feature_666_ys_4.jpg
Irregular Galaxy
http://starchild.gsfc.nasa.gov/Images/StarChild/universe_level2/ngc6822.gif
Irregular Galaxy
http://www.astro.utu.fi/news/img/RGB_bird_idl600.jpeg
Bintang dan Buruj
Relative sizes of stars
TEMPERATURE AND COLOUR
> 30 000 *C
15 000 *C
11 000 *C
orange
5 000 *C
4 000 *C
6 000 *C
red
3 000 *C
f
Twelve of the constellation
from the zodiac
Perbandingan Bintang berdasarkan
suhu dan Saiz
Kelahiran Bintang
Kematian Bintang
Kematian Bintang
Bintang, Galaksi dan Alam Semesta
Test
Penutup
1. Baca Surah Al-`Ashr
2. Tasbih Kifarah.
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