Moon, on its circular path around the Earth is located on the same side, of where the Sun is located. And hence not visible under the bright light of the Sun. Making the Night, Moon less and best for viewing twinkling stars and observe faint objects like galaxies and star clusters as there will be no interference from the moon light.

A Solar Eclipse, occurs when the Earth, The moon and the Sun are aligned in a straight line having the Moon between the two. The Moon, when at an accurate distance from the Earth covers the Sun completely. But there are Cases when the Moon is unable to completely do so as it too far from the Earth and hence the size of the moon as seen from the Earth is not enough to totally hide the large disc of the Sun.

Moon, on its circular path around the Earth is located on the same side, of where the Sun is located. And hence not visible under the bright light of the Sun. Making the Night, Moon less and best for viewing twinkling stars and observe faint objects like galaxies and star clusters as there will be no interference from the moon light.

Elongation is generally defined as the angle between the two planets, or a planet and the sun, or a planet and the moon or the moon and the sun as seen by an observer on the Earth. Venus at elongation suggests the angle between Venus and Sun, and eastern elongation concludes the position of Venus in East of the Sun. Which means the Planet Venus is clearly seen after the sunset in the evening sky in the direction in which the sun sets i.e. west as seen from the Earth.