Q 01/05
A) Starry
B) Heavenly
C) Spiral
D) Milky
Answer · why
It referred to the pale band of our own galaxy across the night sky.
Q 02/05
A) Lenticular
B) Elliptical
C) Barred spiral
D) Irregular
Answer · why
A bar of stars runs through its core and merges into the spiral arms.
Q 03/05
A) Active, quiet and dead
B) Elliptical, spiral and irregular
C) Ring, shell and bar
D) Dwarf, giant and supergiant
Answer · why
The Hubble sequence refines these by shape.
Q 04/05
A) Ordinary stars
B) Dark matter
C) Black holes
D) Hot gas
Answer · why
Only a few percent is visible as stars and nebulae.
Q 05/05
A) A giant neutron star
B) A massive white dwarf
C) A stellar nursery
D) A supermassive black hole
Answer · why
Its existence in galactic cores was confirmed through X-ray astronomy.
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