Which of the following galaxy is roughly egg shaped (ellipsoidal)?
a) spiral
b) elliptical
c) irregular
d) none of these
Elliptical galaxies do not have………
a) bright stars
b) galactic bulge
c) stars
d) elliptic bulge
Which of the following galaxies contain old stars?
a) spiral
b) elliptical
c) irregular
d) all of these
Explanation:An elliptical galaxy is a type of galaxy with an approximately ellipsoidal shape and a smooth, nearly featureless image. They are one of the four main classes of galaxy described by Edwin Hubble in his Hubble sequence and 1936 work The Realm of the Nebulae, along with spiral and lenticular galaxies
Why the
elliptical galaxies contain old stars?
a) no formation of new stars
b) little formation of new stars
c) new stars engulfed by black holes
d) all of these
How many estimated stars are present in elliptical galaxy?
a) 100 million
b) 100 billion
c) 100 trillion
d) 100 million to 100 trillion
Which of the following galaxy has no definite shape?
a) spiral galaxy
b) elliptical galaxy
c) irregular galaxy
d) none of these
Explanation:An
irregular galaxy is a galaxy that does not have a distinct regular shape,
unlike a spiral or an elliptical galaxy. Irregular galaxies do not fall into
any of the regular classes of the Hubble sequence, and they are often chaotic
in appearance, with neither a nuclear bulge nor any trace of spiral arm
structure.
