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What type of galaxy is Milky Way ?

Spiral
Round
Elliptical
Square

Milky.jpg

Our solar system is in Milky Way. It got its name Milky Way because there is an appearance of dim glowing band in the night sky. Its shape is spiral where most of the stars are in the central bar.

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What is the meaning of the word "Astro" ?

Star
Moon
Planet
All above

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In Greek words, astro means star and nomy means law of the stars.

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What is light-year ?

Unit of energy
Unit of length
Unit of heat
Unit of mass

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As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in a vacuum in one Julian year.

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Which star is nearest to the earth ?

Sun
Sirius A
Sirius B
Centauri

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Yes, Sun is the biggest star in our Solar System. It is in the center of the Solar System. Being 109 times that of Earth in size, its mass is 330,000 times of earth.

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How many stars are estimated in Milky Way Galaxy ?

MilkyWay.jpg
50–100 billion stars
100–200 billion stars
200–400 billion stars
500–900 billion stars

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What is the estimated age of Milky Way Galaxy ?

10.2 billion years
11.2 billion years
12.2 billion years
13.2 billion years

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It is estimated to be about 13.2 billion years old, nearly as old as the Universe.

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Milky Way appears brightest at the

Center
Edges
Upper Left
Down Left

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The Galactic Center is the rotational center of the Milky Way galaxy. It is located at a distance of 8.33±0.35 kpc (~27,000±1,000 ly) from the Earth in the direction of the constellations Sagittarius, Ophiuchus, and Scorpius where the Milky Way appears brightest. It is believed that there is a supermassive black hole at the Galactic Center of the Milky Way

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Identify this constellation.

Sagittarius.jpg
Sagittarius
Crux
Carina
Musca

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Sagittarius is a constellation of the zodiac, the one containing the galactic center. Its name is Latin for the archer

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Identify this constellation.

orion.jpg
Canis Major
Orion
Ara
Taurus

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Orion, often referred to as The Hunter, is a prominent constellation located on the celestial equator and visible throughout the world. It is one of the most conspicuous, and most recognizable constellations in the night sky

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Identify this constellation.

taurus.jpg
Ara
Orion
Taurus
Gemini

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Taurus is one of the constellations of the zodiac. Its name is a Latin word meaning 'bull', and its astrological symbol is a stylized bull's head

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