# data[].attributes.body
The phases of the moon are 8 phases that the moon go through.  The moon takes 29.5 days to go through one cycle around the Earth and the path that the moon takes is a gradual change and the moon does not click through the phases it keeps moving all the time.

# data[].attributes.body
https://www.youtube.com/watch?v=wz01pTvuMa0

# data[].attributes.body
This picture represents the 8 moon phases and where they are in relation to the sun and Earth.

# data[].attributes.body
A lunar eclipse is an eclipse where the Earth blocks out the moon and the moon becomes red.  When the moon gets eclipsed by the Earth, the moon turns red because as the sun sends rays of light, the rays of light are the colors of the rainbow and red is the longest so the red goes around the earth and hits the moon. That is what gives the moon its red appearance when it is eclipsed by the Earth from the sun.

# data[].attributes.body
This picture shows the moon being blocked out by Earth and if you're on Earth in the right spot on the Earth, then you will see the moon has turned red.

# data[].attributes.body
A solar eclipse is an eclipse when the moon blocks out the sun and when that happens if you are in the right spot you will experience darkness for a brief moment of time.  Often times a solar eclipse is said to not happen more than a lunar but that statement is false.  Lunar and Solar eclipses both happen at about the same rate but you are more likely to see a lunar eclipse than a solar because of the position that you are on in the Earth.

# data[].attributes.body
This photo shows how a solar eclipse works. If you are in the umbra then you have full eclipse and if you are in the penumbra then you see a partial eclipse.

# data[].attributes.body
Tides are caused by the moon and they move the hole entire ocean.  Tides are caused by the moon and the sun's gravitational pull on the Earth's water.  When these two things' gravity pull against each other, they create tides.  There is 2 high tides that happen a day and 2 low tides that happen a day.  Tides can be classified as spring tides (huge high to low tide difference) and neap tides (small high to low tide difference).

# data[].attributes.body
This is a spring tide

# data[].attributes.body
This is a neap tide

# data[].attributes.body
This diagram shows how the tides work on the Earth. New and full moon's have spring tides while first and third quarter have neap tides.

# data[].attributes.body
This article tells us that the moon is Earth's only natural satellite.

# data[].attributes.attachment_link.description
If you are a PowerKnowledge Earth & Space Science subscriber and are unable to access the site, please contact your system administrator or contact PowerKnowledge Earth & Space Science Customer Care via email or phone at (877) 381-6649.

# data[].attributes.body
This article shows us that there is one other solar eclipse, an annular eclipse.

# data[].attributes.attachment_link.readable_text
This article is for students grades 5-8.

An eclipse occurs when one heavenly body such as a moon or planet moves into the shadow of another heavenly body. Let's learn about the two types of eclipses on Earth.

What is a Lunar Eclipse?

The Moon moves in an orbit around Earth. At the same time, Earth orbits the Sun. Sometimes Earth moves between the Sun and the Moon. When this happens, Earth blocks the sunlight that normally is reflected by the Moon. (This sunlight is what causes the Moon to shine.) Instead of light hitting the Moon's surface, Earth's shadow falls on the Moon. This is an eclipse of the Moon, or a lunar eclipse. A lunar eclipse can occur only when the Moon is full.

A lunar eclipse can be seen from Earth at night. There are two types of lunar eclipses:

1. Total lunar eclipse.

2. Partial lunar eclipse.

A total lunar eclipse occurs when the Moon and the Sun are on exact opposite sides of Earth. Although the Moon is in Earth's shadow, some sunlight reaches the Moon. The sunlight passes through Earth's atmosphere, which filters out most of the blue light. This makes the Moon appear red to people on Earth.

A partial lunar eclipse happens when part of the Moon enters Earth's shadow. In a partial eclipse, Earth's shadow appears very dark on the side of the Moon facing Earth. What people see from Earth during a partial lunar eclipse depends on how the Sun, Earth and Moon align.

A lunar eclipse usually lasts for a few hours. At least two partial lunar eclipses happen every year, but total lunar eclipses are rare. It is safe to look at a lunar eclipse.

What is a Solar Eclipse?

Sometimes when the Moon orbits Earth, the Moon moves between the Sun and Earth. When this happens, the Moon blocks the light of the Sun from reaching Earth. This causes an eclipse of the Sun, or a solar eclipse. During a solar eclipse, the Moon casts a shadow onto Earth.

There are three main types of solar eclipses:

1. Total solar eclipse: A total solar eclipse is visible from a small area on Earth. The people who see the total eclipse are in the center of the Moon's shadow when it hits Earth. The sky becomes very dark, as if it were night. For a total eclipse to occur, the Sun, Moon and Earth must be in a direct line.

2. Partial solar eclipse: This happens when the Sun, Moon and Earth are not exactly aligned. The Sun appears to have a dark shadow on a small part of its surface.

3. Annular (an-yə-lər) solar eclipse: An annular eclipse happens when the Moon is farthest from Earth. Because the Moon is farther away, it seems smaller. It does not block the entire view of the Sun. The Moon in front of the Sun looks like a dark disk on top of a larger Sun-colored disk. This creates what looks like a ring around the Moon.

During a solar eclipse, the Moon casts two shadows on Earth.

1. The umbra (əm-brə): This shadow gets smaller as it reaches Earth. It is the dark center of the Moon's shadow. People standing in the umbra will see a total eclipse.

2. The penumbra (pə-ˈnəm-brə): The penumbra gets larger as it reaches Earth. People standing in the penumbra will see a partial eclipse.

Solar eclipses happen every 18 months somewhere on Earth. Unlike lunar eclipses, solar eclipses last only a few minutes.

Never look directly at the Sun: Doing so can permanently damage your eyes! You must use proper safety equipment to look at any type of solar eclipse.

Why Does NASA Study Eclipses?

Hundreds of years ago, when people observed the Moon during an eclipse, they saw Earth's shadow on the Moon and discovered that the Earth is round. Even after all these years, scientists are still learning about the Moon from lunar eclipses. In December 2011, NASA's Lunar Reconnaissance Orbiter gathered data about how quickly the Moon's day side (the side that always faces Earth) cools during a lunar eclipse. NASA can learn what the Moon's surface is made of from this data. If an area of the Moon's surface is flat, it will cool quickly. Scientists use this data to know which areas of the Moon are rough with boulders and which are flat.

Scientists use solar eclipses as an opportunity to study the Sun's corona. The corona is the Sun's top layer. During an annular eclipse, NASA uses ground and space instruments to view the corona when the Moon blocks the Sun's glare.
Remember, never look directly at the Sun: Doing so can permanently damage your eyes!
More about Eclipses
Lunar Eclipses and Solar Eclipses @ NASA Space Place
How Does a Lunar Eclipse Work? Video
What Is an Orbit? Grades 5-8
Read What Is an Eclipse? (Grades K-4)

# data[].attributes.attachment_link.description
An eclipse occurs when one heavenly body such as a moon or planet moves into the shadow of another heavenly body.

# data[].attributes.body
This article explains tides and how they rise and fall.

# data[].attributes.attachment_link.readable_text
Tides are the cyclic rising and falling of Earth's ocean surface caused by the tidal forces of the Moon and the Sun acting on the Earth.

Tides cause changes in the depth of the sea, and also produce oscillating currents known as tidal streams, making prediction of tides important for coastal navigation.

The strip of seashore that is submerged at high tide and exposed at low tide, the intertidal zone, is an important ecological product of ocean tides.

The changing tide produced at a given location on the Earth is the result of the changing positions of the Moon and Sun relative to the Earth coupled with the effects of the rotation of the Earth and the local bathymetry (the underwater equivalent to topography or terrain).

Though the gravitational force exerted by the Sun on the Earth is almost 200 times stronger than that exerted by the Moon, the tidal force produced by the Moon is about twice as strong as that produced by the Sun.

The reason for this is that the tidal force is related not to the strength of a gravitational field, but to its gradient.

The field gradient decreases with distance from the source more rapidly than does the field strength; as the Sun is about 400 times further from the Earth than is the Moon, the gradient of the Sun's field, and thus the tidal force produced by the Sun, is weaker.

# data[].attributes.attachment_link.keywords[]
geomagnetic storms; earth science; geology; natural disasters; oceanography; near-earth object impacts

# data[].attributes.attachment_link.description
Tides are the cyclic rising and falling of Earth's ocean surface caused by the tidal forces of the Moon and the Sun acting on the Earth. Tides cause changes in the depth of the sea, and also produce oscillating currents known as tidal streams, making prediction of tides important for coastal navigation.