Test: Our Universe - 1

The astronaut Christina Hammock Koch of the National Aeronautics and Space Administration (NASA) created a record for the longest single spaceflight by a woman.

When the moon is at its full or new moon phase, high tides are at their highest.

A 3-dimensional model of the Earth is called globe and World map.

• We cannot see the Earth all of it at once as it is so large. So, globe helps us to see what the whole Earth looks like.
• A globe is better representation of earth in comparison to a flat map.
• As the Earth spins on its axis, globe also has an axis and we can rotate it.
• The globe is tilted to one side because the Earth itself is tilted. So, a globe helps in properly studying the Earth.

On Oct. 4, 1957, Sputnik 1 successfully launched and entered Earth's orbit. And, The Aryabhata spacecraft, named after the famous Indian astronomer, was India's first satellite for India.

Because space is a near-perfect vacuum — meaning it has exceedingly few particles — there's virtually nothing in the space.

Light travels in a straight line.

At times the earth comes between the sun, and the moon and the moon comes between the sun and the earth.

At such times, the one in the middle casts a shadow that partially or wholly hides the other from the sun. This is called an eclipse.

An eclipse occurs because the earth revolves around the sun and the moon revolves around the earth.

The given picture is of a satellite.

A constellation is a group of stars that appears to form a pattern. Big dipper, Ursa Major, and Ursa Minor are constellations. 

The graph shown in option C gives the correct changes in the size of the moon from new moon to a full moon. 

We live in one of the arms (a.k.a Orion arm) of the milky way galaxy which was named as such by the ancient Greeks because it looked like a river of milk flowing through the heavens.