Science-Five | Hindu Science Quiz: On planetary nebulae

1 / 5 | What are planetary nebulae?

• Planets that explode into nebulae
• Where do nursery planets originate?
• the gaseous remains of a star after its outer layers have been ejected
• the remains of a star that had planets in its system

2 / 5 | How long do planetary nebulae last?

• Thousands of years
• three years
• Billions of years
• Seven years

3 / 5 | Name the first planetary nebula discovered so far.

• Cat’s Eye Nebula
• Dumbbell Nebula
• Ring Nebula
• Horsehead Nebula

4 / 5 | Why are planetary nebulae so colourful?

• The color of the nebula depends on the color of the star
• Dust particles give color to the nebula
• The temperature of a nebula determines its color
• The presence of gases like helium, nitrogen and oxygen gives them this colour

5 / 5 | At what stage in the Sun’s life can it become a planetary nebula?

• when it becomes a red giant
• when it is a protostar
• When the Sun becomes a white dwarf and fades away
• As a white dwarf