Question

Do You Know?
Our earth, along with the other
planets, forms the Solar System. The
Solar System is located in the outward
spiral (Orion Arm) of the Milky Way
Galaxy (Akash Ganga). Most likely, there
are billions of other solar systems in
our galaxy and billions of galaxies in the
universe.
across the sky, is a barred spiral galaxy. It en
ormations
given name
St. two bright
Saptarishi
point tov
northern
North
Pd
North
di
some of them.
Indic
STARS
studying
stars
sie
times,
astron
Th.
bodies, they look very small as they are very far away from the earth. The distance between
bodies is usually measured in a unit known as light year.
Some stars are so far away that the light radiated by them reaches us in millions of
nearest star to the earth, other than the sun, is the 'Proxima Centauri'. It is about 4% light year
from us.
comp
year
revol
The
scie
Do You Know?
Disturbance in the atmosphere causes star light to bend slightly. As a result, some of the
light reaches us directly and some gets slightly bent away. This makes a star to twinkle
Light travels at a speed of about 3 lakh km per second. The distance covered by a ray of ligh
in a year or 365 days is called a light year.
.
CONSTELLATIONS
If you observe the stars in the clear night sky, they appear to form different shapes and patte
and move from west to east. The formations may resemble animals, humans or any other obje
The groups of stars which are recognised by their formations are called Constellations.
Ursa Major, also called the Great Bear, is a constellation of several stars. It appears in the northe
sky. In India, the seven stars called Saptarishi Mandal, is a part of Great Bear. There are several om
Milky Way Galaxy, a faint white band
bar across its center region and has two may
The Orion Arm is located between two major called Po
Stars are self-luminous heavenly bodies. They are made up of hot gases. They generate he
light and radiate it in the space. The number of stars is countless. We cannot see all of the
As we know, there are different types of celestial bodies in the universe. Let us learn more
time. It has been said that, at one time, we can see not more than 6,000 stars. Though, stars are very​

Answer 1

Answer:

The groups of stars which are recognised by their formations are called Constellations.

Ursa Major, also called the Great Bear, is a constellation of several stars. It appears in the north.