Sci-Five | The Hindu Science Quiz: On Planetary Nebula
An observation of a planetary nebula from the NIRCam instrument of NASA’s James Webb Space Telescope, a revolutionary apparatus designed to peer through the cosmos to the dawn of the universe and released July 12, 2022.
Gaseous remains of a star after it has expelled its outer layers
Remnants of a star which had planets in its system
A planetary nebula is a region of cosmic gas and dust formed from the cast-off outer layers of a dying star. Despite their name, planetary nebulae have nothing to do with planets.
3 / 5 |
Name the first planetary nebula ever discovered.
Cat eye’s nebula
Dumbbell nebula
Ring Nebula
Horsehead nebula
The Dumbbell nebula, also known as Messier 27 (M27), was the first planetary nebula ever discovered. French astronomer Charles Messier spotted it in 1764.
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
All planetary nebulae form at the end of the life of a star of intermediate mass, about 1-8 solar masses. It is expected that the Sun will form a planetary nebula at the end of its life cycle-in 5 billion years or so.
