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Astronomy

What is the name of the largest planet in our solar system?

Jupiter

What is the closest star to Earth?

Proxima Centauri

What causes the different phases of the Moon?

The relative positions of the Sun, Earth, and Moon

What is a light-year?

The distance light travels in one year

Which planet is known for its beautiful rings?

Saturn

What is a black hole?

A region of space with extremely high gravitational force

What is the process by which stars convert hydrogen into helium?

Nuclear fusion

What is the name of the red planet?

Mars

Which of the following is not a type of galaxy?

Andromeda galaxy

What is the name of the force that keeps planets in orbit around the Sun?

Gravitational force

How long does it take earth to orbit the sun.

365.24 days

The earth goes around the sun slightly elliptical giving us ?

Aphelion and Perhelion

when is the earth point of orbit closets to the sun

Aphelion

when is the earth point of orbit Furthest from the sun?

perihelion (Januaury)

What is Eccentricity ?

is a dimensionless parameter that determines the amount by which its orbit around another body deviates from a perfect circle.

What is one of the Orbital elements that must be specified to define the shape and orientation of the elliptical orbit?

Eccentricity

At Aphelion how far is the earth from the sun?

[162.1 Million Km] (94.5 Million Miles)

At Perhelion how far is the Earth from the Sun

[147.1 million kilometers] (91.4 Milles)

The Earth's axis is tilted at what angle?

23.5 Degrees

What is the Ecliptic ?

Is the plane of Earths orbit around the sun

Explanation of Ecliptc ?

It is an imaginary plane surface passing through the centers of the earth and sun so that half of the spheres appear above, and half below, the level of this plane, just as if a ball were floating in water half submerged

What are the 4 small circles on earth ?

Article circle ,Tropic of Cancer,Equator ,Tropic of Capricorn . (sometimes Antarctic Circle is included)

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