- Name of twilight when the sun is 12º below the horizon
Ans: Nautical
- Thing that appears at astronomical dusk and disappears at astronomical dawn
Ans: Faintest star visible to the naked eye
- Asura who could only be slain at twilight
Ans: Hiranyakashipu
- Pink border visible above the earth’s shadow at twilight
Ans: Belt of Venus
- Ozone’s absorption that gives the sky a deep blue shade
Ans: Chappuis effect