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Biggest Stars In Our Galaxy

Let’s Know about Most Giant Monster Stars
 
Sun (Reference)
Temperature – 5,500 oC (At Surface), 15 million oC(in the Core) Age – 4.6 billion years old Radius –  795,508 Kilometers (109 times that of earth) Mass – 1.9 x 1030 Kg / 330,000 times that of Earth Gravity – 274 m/s2 / 28 times that of Earth Distance from Earth – 150,000,000 km (1 Astronomical unit)
 
11) Sirius (The Dog Star)
Age – Approx 240 million years old and It can be seen from everywhere on the earth’s surface. Temperature – 10,000 oC (Almost twice as hot as the Sun) Radius – 1.197 Million Km / 1.71 x Solar Radii (Radius of Our Sun) Distance from Earth – 8.6 Light years Mass – 3.9 x 1030 Kg / 2 x Solar Mass(Mass of Our Sun)  Gravity – 213.8 m/sLuminosity – 25 x Solar Luminosity(Our Sun’s Luminosity)
 
10) Pollux
Age – 724 Million Year old Temperature – 4,500 oRadius – 6.122 Million Km / 9 x Solar Radii Distance From Earth – 34 Light years Mass – 4.05 x 1030 Kg / 1.91 x Solar Mass Gravity – 4.842 m/sLuminosity – 43 x Solar Luminosity
 
9) Arcturus
Age – 7.1 Billion Years old Temperature – 4000 oRadius – 17.87 Million Km / 25 x Solar Radii Distance from Earth – 36.7 Light years Mass – 2.1 x 1030 Kg / 1.10 x Solar Mass Gravity – 0.4571 m/sLuminosity – 170 x Solar Luminosity
 
8) Aldebaran
Age – 6.6 Billion Years Temperature – 3680 oRadius – 30.75 Million Km / 44 x Solar Radii Distance from Earth – 65 Light Years Mass – 3.3 x 1030 Kg / 1.7 x Solar Mass Gravity – 0.389 m/sLuminosity – 518 X Solar Luminosity
 
7) Polaris (The North Star / Dhruv Tara)
Age – 70 Million Years Temperature – 5730 oRadius – 35 Million Km / 49 x Solar Radii Distance from Earth – 434 Light Years Mass – 5.4 x Solar Mass Luminosity – 2500 x Solar Luminosity
 
6) Rigel
Age – 8 Million Years Temperature – 10,727 oRadius – 54,250,000 Km / 78 x Solar radii Distance from Earth – 860 Light Years Mass – 3.5 x 1031 Kg / 18 x Solar Mass Luminosity – 12000 x Solar luminosity
 
5) Antares
Age – 11 Million Years Temperature – 3,250 oRadius –  883 x Solar Radii Distance from Earth – 619 Light Years Mass – 12 x Solar Mass Luminosity – 97,500 x Solar Luminosity
 
4) Betelgeuse
Age – 10 Millions Years Temperature – 3,230 oRadius – 820 Million Km / 1,180 x Solar Radii Distance from Earth – 640 Light Years Mass – 20 x Solar Mass Luminosity – 140,000 x Solar Luminosity
 
3) VV Cephei
Age – 25 Million Years Temperature – 3,330 oRadius – 988 Million  Km /  1400 x Solar Radii Distance from Earth – 4,900 Light Years Mass – 3.8 x 1031 Kg / 19 x Solar Mass Luminosity – 200,000 x Solar Luminosity
 
2) VY Canis Majoris
Age – 4,900 Million Years Temperature – 3,220 oRadius – 987 Million Km / 1420 x Solar Radii Distance from Earth – 4000 Light Years Mass – 3.3 x 1031Kg / 17 x Solar Mass Gravity – 0.0025 m/sLuminosity – 270,000  x Solar Luminosity
 
1) UY Scuti
Age – Not calculated Temperature – 3,400 oRadius – 1188 Million Km / 1708 x Solar Radii Distance from Earth – 9,500 Light Years Mass – 8 x Solar Mass Luminosity – 340,000 x Solar Luminosity
 
 
Mercury < Mars < Venus < Earth < Neptune < Uranus < Saturn < Jupiter < Proxima Centauri < Sun < Sirius < Pollux < Arcturus < Aldebaran < Rigel < Antares < Betelgeuse < NML Cygni < VV Cephei A < VY Canis Majoris < UY Scuti

How Big Is The Universe ?

The Proper observable distance of Universe from Earth to the edge of universe is 46 Billion Light-Years (14 Billion parsecs). 

Let’s Know This Universe In Increasing order.
1) Planets
There are 8 Planets in our solar system, Our Earth is one of them.

2) Solar System
Every Solar system have Many Planets which Revolves around a Star.
scientists estimate that there may be 100 billion of solar systems in our galaxy.

3) Star
Sun is also A Star, Other Stars can be larger or smaller than Sun. 
In the night we see stars, these Stars Looks Like Very tiny Because of Huge distance from earth.
Our Nearest Star is Proxima Centauri which is 4.25 Light Year away from the Earth. 

4) Galaxy 
There are about 2 Trillion Galaxies in the observable universe.
It is a Huge Collection of Gas, Dust, and Billions(200 to 400 Billions) of Stars.
Our Galaxy is a Milky Way  Galaxy, Which also has a Super massive Black Hole in the middle.

5) Cluster
One Cluster have Several Hundred Galaxies. Our Cluster name is Virgo Cluster.

(6) Super Cluster
It is a Cluster of clusters, They can have 2 to 4 clusters are common.
Recently Indian Scientists Discover Largest Super Cluster (Saraswati Super Cluster) which has 42 Cluster. Our Super cluster name is Laniakea Supercluster.

Do You Know ?

How Do We Measure Distance In Space

To measure distances in the Universe,  Astronomers use different methods to determine the distances to objects. The specific method which is used depends on how far away the object is.

Various Common Measuring Methods 

1) Radar
This method is use to determine distances in our solar system.

2) Parallax
This method is use to measuring distances to nearby stars. But cannot measure stars more than about 100 light-years from Earth.

3) Cepheids
Measuring distances in our Galaxy and to nearby galaxies. This method works up to 13 million light-years from the earth.

4) Supernovae
Measuring distances to other galaxies. This method works up to about 1 billion light-years.

5) Redshift and Hubble’s Law
This method is use for very far objects (beyond about 1 billion light-years)

 

DO YOU KNOW ?

Light year is a Astronomical unit which is used to measure distance in space.

ONE LIGHT YEAR (Distance) = 10 Trillion KiloMetre (A light travel in One Year)

Light Speed = 299,792,458  metre / second.  (Approx 3 Lakh KiloMetre Per second)

Light Travel = (Speed of Light) x (Time)

Light Travel (in One hours) =   1,079,252,848,800 Metre (Approx  107 Crore Kilometre / 1.07 Billion KM)

 (in 24 hours / in one day) = 25,902,068,370,000 Metre (Approx 2600 Crore KiloMetre / 25.9 Billion KM)

 (In 365 days / In a Year ) = 9,454,254,955,000,000 Metre (Approx 10 Lakh Crore KiloMetre / 10 Trillion KM)

 

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