SOLAR SYSTEM

UNIVERSE

LIFE IN THE SOLAR SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The Earth is located about 1 au (astronomical unit) from the Sun. Suppose astronauts from Earth travel to another star system. This star is about the same size and temperature as the Sun. Where should the astronauts start looking to see if the star has a planet they could live on?
A
between 1 au and 2 au from the star
B
between 1 au and 10 au from the star
C
between 2 au and 3 au from the star
D
between 0 au and 1 au from the star
Explanation: 

Detailed explanation-1: -As noted earlier, Earth’s average distance to the Sun is about 93 million miles (150 million kilometers) from the Sun. That’s 1 AU.

Detailed explanation-2: -Astronomers use the distance between Earth and sun, which is 93 million miles, as a new unit of measure called the Astronomical Unit. It is defined to be exactly 1.00 for the Earth-Sun orbit distance, and we call this distance 1.00 AUs.

Detailed explanation-3: -As noted earlier, Earth’s average distance to the Sun is about 150, 000, 000 km (93, 000, 000 miles) from the Sun. That’s 1 AU.

Detailed explanation-4: -An Astronomical Unit (AU) is the average distance between Earth and the Sun, which is about 93 million miles or 150 million kilometers.

Detailed explanation-5: -Size and Distance From an average distance of 484 million miles (778 million kilometers), Jupiter is 5.2 astronomical units away from the Sun. One astronomical unit (abbreviated as AU), is the distance from the Sun to Earth. From this distance, it takes Sunlight 43 minutes to travel from the Sun to Jupiter.

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