EVERYDAY SCIENCE

SCIENCE

ENVIRONMENTAL SCIENCES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Of the billions of stars in our galaxy, why is the Sun the only star in the galaxy that supplies energy to Earth?
A
The Sun is the closest star.
B
The Sun is the hottest star.
C
The Sun is the biggest star.
D
The Sun is the oldest star.
Explanation: 

Detailed explanation-1: -Of the billions of stars in our galaxy, why is the Sun the only star in the galaxy that supplies energy to Earth? A. The Sun is the closest star.

Detailed explanation-2: -STAR ATTRACTION The Sun is the only star in our solar system. It is the center of our solar system, and its gravity holds the solar system together. Everything in our solar system revolves around it – the planets, asteroids, comets, and tiny bits of space debris.

Detailed explanation-3: -The simple answer is that the Sun is the closest star to Earth, about 93 million miles away. But that might not answer your question. Outside of our Sun, our system’s nearest neighbor is Alpha Centauri. This isn’t a single star, it’s actually a triple-star system-three stars bound together by gravity.

Detailed explanation-4: -Proxima Centauri, the closest star to our own, is still 40, 208, 000, 000, 000 km away. (Or about 268, 770 AU.) When we talk about the distances to the stars, we no longer use the AU, or Astronomical Unit; commonly, the light year is used.

Detailed explanation-5: -Our Sun is an ordinary star, just one among hundreds of billions of stars in the Milky Way Galaxy. As the only star we can observe in detail, it provides a basis for our understanding of all stars.

There is 1 question to complete.