GENERAL KNOWLEDGE

GK

SOLAR SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Planets do not make their own light, rather they ____ light.
A
create
B
reflect
C
generate
D
form
Explanation: 

Detailed explanation-1: -Because planets do not have nuclear fusion, they do not produce their own light. Instead, they shine with light reflected from a star. When we see planets in the night sky, such as Venus, the so-called “Evening Star, ‘’ we’re seeing reflected sunlight.

Detailed explanation-2: -Although using a geocentric model in 510 AD, Indian mathematician and astronomer Aryabhata was the first to correctly explain how planets and moons have no light of their own, but rather shine due to the reflection of sunlight in his Aryabhatiya.

Detailed explanation-3: -Consequently, HD 149026b might be the blackest known planet in the Universe, in addition to the hottest. The temperature of this dark and balmy planet was taken with NASA’s Spitzer Space Telescope. While the planet reflects no visible light, its heat causes it to radiate a little visible and a lot of infrared light.

Detailed explanation-4: -The light from other planets in the solar system is also reflected light from the Sun. All planets reflect the light from their star, which is the only way that we can see them with our eyes. However, most planets are so far away that the light they reflect is overwhelmed by the direct light shining from their star.

There is 1 question to complete.