Sci-Five | The Hindu Science Quiz: On Planetary Nebula

1 / 5 |
What are planetary nebulae?

• Planets that explode into nebulae
• The nursery planets are born from
• Gaseous remains of a star after it has expelled its outer layers
• Remnants of a star which had planets in its system

2 / 5 |
For how long does a planetary nebula last?

•  Tens of thousands of years
• Three years
• Billions of years
• Seven years

3 / 5 |
Name the first planetary nebula ever discovered.

• Cat eye’s nebula
• Dumbbell nebula
• Ring Nebula
• Horsehead nebula

4 / 5 |
Why are planetary nebulae so colourful?

•  The nebula’s colour depends on the colour of the star
• Particles of dust impart the colour to the nebula
• The temperature of the nebula determines the colour
• Presence of gases such as helium, nitrogen and oxygen gives them the colour

5 / 5 |
In which stage of the Sun’s life can it become a planetary nebula?

• After it becomes the Red giant
• When it is a protostar
• When the Sun starts to fade away after being a White Dwarf
• As a White Dwarf