8.1 Stars Flashcards
(3 cards)
1
Q
What is a Light-Year
A
The distance light travels in a year, around 9.5 trillion kilometers (9.5 X 10^12)
2
Q
What is the closest Star
A
The closest Star is Proxima Centauri
Around 4.2 light years away (3.9 X 10^13)
3
Q
What is Gravity?
A
Gravity is the force of attraction between any two objects, it’s a weak force that is dependent on the masses of two object.
Gravity creates pressure in stars creating nuclear fusion
