Lunar Eclipse vs New Moon: Difference and Comparison

The lunar eclipse and the new moon are two crucial concepts in astronomy. There may be confusion between the two terms as both these terms deal with the position of the Sun, Earth and Moon.

Although there may be some similarities between these two concepts, there is a spring difference between these two terms.

Key Takeaways

  1. A lunar eclipse occurs when the Earth passes between the Sun and the Moon, casting its shadow on the Moon, which can cause the Moon to appear red.
  2. A new moon occurs when the Moon is positioned between the Earth and the Sun, making it difficult or impossible to see from Earth because the illuminated side is facing away from us.
  3. Lunar eclipses are relatively rare events, while new moons occur approximately once a month.

Lunar Eclipse vs New Moon

Lunar eclipse is an astronomical event that happens when the moon becomes darker because it moves into the Earth’s shadow. It happens every six months. New moon is the moon when it appears at the beginning of its four-week cycle, has a thin curved shape, or is in concurrence with the sun.

Lunar eclipse vs New moon

However, the above is not the only difference. A comparison between both the terms on specific parameters can shed light on subtle aspects:

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Comparison Table

Parameters of ComparisonLunar EclipseNew Moon
MeaningA lunar eclipse is when the Earth is between the Sun and the Moon. This leads to the shadow of Earth falling across the Moon.The new moon is a phenomenon to describe a phase of the Moon in its orbital cycle around the Earth. In the new moon phase, the Moon is situated between Earth and Sun; hence, no portion of the moon can be observed.
PositioningThe lunar eclipse deals with the positioning of EarthThe new moon deals with the positioning of the Moon
Side objectsEarth is between Sun and MoonMoon is between Sun and Earth
Visibility during nighttimeA lunar eclipse can be seen on an entire nightThe moon cannot be viewed during the whole night during a new moon
AppearanceA lunar eclipse becomes visible on a full moon nightA solar eclipse happens during the new moon
Period of occurrenceFor an hour or soThroughout the night
Reason for occurrenceA Lunar eclipse happens because Earth gets in the way of the light from the Sun and stops the light from hitting the Moon.A new moon happens because of the Moon’s changing phase as it travels in its monthly orbit.
FrequencyLunar eclipse happens periodically or twice a yearA new moon occurs once a month
EffectDuring the lunar eclipse, the sunlight is blocked from reaching the moonNo specific effect
TypesThere are multiple types of lunar eclipses, such as partial lunar eclipse, total lunar eclipse, and penumbra lunar eclipse.There are no such types of the new moon.

 

What is Lunar Eclipse?

A lunar eclipse is one in which the moon appears darkened as it passes into the earth’s shadow.

It is an eclipse in which the full moon passes partially or wholly through the umbra of the earth’s shadow. In simple words, a phase in which the Earth crosses between the moon and the sun, casting a shadow of Earth onto the moon, is called a lunar eclipse.

A lunar eclipse is also known as “Chandra Grahan” in India. A lunar eclipse only occurs a) during a full moon and b) when the moon goes through Earth’s shadow. Earth has two categories of shadows, viz.

Umbra (conical part of the shadow excluding all light from the primary source) and the penumbra (space of partial illumination between perfect shadow and full light).

The lunar eclipse has three forms. They are a) partial lunar eclipse- an eclipse in which the moon is not entirely immersed in the umbra of the earth’s shadow b) total lunar eclipse- an eclipse which happens when the Earth is between the Sun and the Moon and the Moon is shadowed, and c) penumbral lunar eclipse- an eclipse in which the Moon, Earth, and Sun are not perfectly aligned, i.e. when the Moon passes through the faint and outer part of Earth.

lunar eclipse
 

What is New Moon?

The new moon is the phase of the moon when it is in concurrence with the sun so that its dark side is towards the earth. The new moon can also be referred to as a scenario where the thin crescent moon is seen shortly after sunset for a few days after the actual occurrence of the new moon stage.

The new moon is one of its phases as it moves in the orbit between the sun and the earth.

The new moon occurs every month when the moon and the sun join together. The new moon is invisible in the first stage to people later; it slowly emerges as a skinny, curved figure less than its full size.

The new moon signifies the preliminary satellite stage of the moon’s orbit in the universe. Therefore, the new moon is considered a symbol of new beginnings.

People consider this day as auspicious to commence a new work or assignment. The new moon is regarded as a monthly gift to humankind from space.

solar eclipse

Main Differences Between Lunar Eclipse and New Moon

  1. The lunar eclipse deals with the positioning of Earth. The new moon deals with the positioning of the Moon.
  2. Lunar eclipses occur when the Earth comes in the middle of the Sun and the Moon. The new moon occurs when the Moon is between Sun and the Earth.
  3. A lunar eclipse can last for approximately an hour. On a new moon, the moon is not visible during the entire night, which means the process occurs for the entire night.
  4. A Lunar eclipse commonly happens twice a year. A new moon occurs every month.
  5. A lunar eclipse is not a phase of the earth; it is a situation where the shadow of the world covers the moon for a brief period. The new moon can be considered one of its phases as it travels in orbit.
  6. There are multiple types of lunar eclipses. There are not any specific categories of the new moon.
Difference Between Lunar Eclipse and New Moon

References
  1. https://www.inderscienceonline.com/doi/abs/10.1504/IJICBM.2009.023549
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