1. Star Raiders: Introduction to Astronomy
One Earth Foundation
Ver 1.3 (2013)

2. Where do we start?? How are stars formed? How do stars die?
Classification of Stars?
What constitutes of Solar System?
What lies immediately beyond?
Our Galaxy and where are we in it?
Types of Galaxies

8. The Kuiper belt , sometimes called the Edgeworth–Kuiper belt is a region of the Solar System, beyond the planets, extending from the orbit of Neptune (at 30 AU) to approximately 50 AU.  Like the asteroid belt, it consists mainly of small bodies, or remnants from the Solar System's formation. While most asteroids are composed primarily of rock and metal, most Kuiper belt objects are composed largely of frozen methane, ammonia and water. It is home to at least three dwarf planets – Pluto , Haumea and Make make

9. Region beyond the Kuiper belt, extending as far as 1 LY from our sun
Region beyond the Kuiper belt, extending as far as 1 LY from our sun. The region where most comets originate.

10. Who has seen the Milky Way?
Our Galaxy
Who has seen the Milky Way?

16. Colliding Galaxies

18. make up our Universe: lets Piece it together
Billions of Galaxies
make up our Universe: lets Piece it together

20. The way forward …. Measures of distance Measuring distances
The address of celestial objects
Zodiac
Viewing options

21. Measures of distances 1 Astrom. Unit = 149,597,870,700 kms
Approx 150 Mil Km
Light Year = 9,460,000,000,000 kms
Parsec = 3.26 Light Years

22. Measuring distance in space
Hold out your thumb at arm's length, close one of your eyes, and examine the relative position of your thumb against other distant (background) objects, such as a window, wall, or tree. Now look at your thumb with your other eye. What do you notice? Move your thumb closer to your face and repeat the experiment
D= 1/p
D= distance in parsecs
P = angle in arc seconds

23. Hipparcos (High Precision Parallax Collecting satellite
To honour Greek astronomer Hipparchus
Period 1989 – 1993
Hipparcos Catalogue = 118,000 stars
Tycho Catalogue = 1 Mil stars
GAIA Astronometry Satellite
Due to launch 2013 Oct
Life 5 Years
3 D image of our galaxy
Measuring 1 Bil stars

24. Address of Celestial Objects
Right Ascension = Longitude
Declination = Altitude

26. Some facts Our Milky way is 100,000 light years in diameter
The Milky way is said to have about 200 ,000,000,000 stars
The Core of the milky way falls in the constellation of Sagittarius
Our solar system is about 30,000 Ly from the core
At the core of the milky way s a massive black hole
We can see our own and other galaxies with the naked eye
Andromeda and milky way will collide
Nearest star: proxima Centauri of Centaurus constellation is 4.2 Ly. S. Hem
The brightest star is Sirius of of constellation Canis Majoris and is Mag Southern Hemisphere. Distance 8.6 Ly Our sun is Mag -26
On a dark night the naked eye can see about 6000 stars
In a metro you could see about stars
Have we left the Solar System?? Not yet but just about there. Voyager 1 & 2 (1977) are both in the other reaches of solar system
There are 88 constellations
We have basic data on over 1,000,000 stars and growing

27. Your Zodiac Sign
Is no longer valid !!!!

28. Some Viewing options Naked Eye Binoculars Astronomy Binoculars
Guide scopes
Telescopes
Electromagnetic Radiation (EM Bandwidth)
Radio Waves & Radio Astronomy

29. Today’s Night Sky

31. happy Gazing & dark skies
Thank you.
Wishing you
happy Gazing & dark skies
Raminder Chowdhary