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You have heard a lot about solar eclipses, total or partial eclipses. Once this phenomenon is about to happen, they always create a strong wave of interest from all over the Earth and everyone wants to see this rare astronomical phenomenon. Join Tnhelearning.edu.vn to find out interesting information.
What is a solar eclipse? Causes of solar eclipse
A solar eclipse is a phenomenon that occurs when the Moon passes between the Earth and the Sun in a straight line and is observed from the Earth , at which time the Moon completely or partially obscures the Sun.
Specifically, the Earth moves around the Sun while the Moon moves around the Earth . With each of its cycles , the Moon enters a position between the Earth and the Sun once . Because the two orbits are about 5 degrees apart , the Moon will not always cross the line between the Earth and the Sun. In other words, there are many times when the moon goes in the middle of the “new moon” time . There is only one moonless night when there are three celestial bodies, namely the Sun, Moon and Earth, that are aligned with each other.
What is a solar eclipse? Causes of solar eclipse
When will the 2022 solar eclipse happen?
From now until the end of 2022, the solar eclipse will occur on October 25, 2022 . This will be a partial eclipse . Visible locations are Europe, South/West Asia, North/East Africa and the Atlantic Ocean . In Vietnam, this phenomenon cannot be seen .
When will the 2022 solar eclipse happen?
Solar eclipse classification
Total solar eclipse
A total solar eclipse occurs when the Moon’s dark disk completely obscures the Sun , allowing the corona or corona to be seen with the protective eye . During any one solar eclipse, a total solar eclipse can only be observed from a narrow band of the Earth’s surface.
Total solar eclipse
Partial eclipse
A partial eclipse occurs when the Sun and Moon are not exactly in the same straight line, and the Moon only partially obscures the Sun. This phenomenon is commonly observed in many places on Earth outside the path of the central eclipse.
Some types of eclipses can only be observed as partial eclipses, when the shadow passes through one of the Earth’s poles and the centerline does not now cross the Earth’s surface.
Partial eclipse
Annular solar eclipse
An annular eclipse occurs when the Sun and Moon lie exactly in a straight line, but the Moon’s apparent size is smaller than the Sun’s apparent size. So the Sun still appears like a brilliant ring around the Moon. An annular eclipse lasts longer than a total solar eclipse, but only lasts a few minutes.
Annular solar eclipse
Hybrid eclipse
A hybrid eclipse is an intermediate between a total solar eclipse and an annular solar eclipse . At some points on Earth it is observed to be a total solar eclipse, at other places it is an annular eclipse. The general term for a total, annular, or hybrid solar eclipse is a central eclipse. Hybrid eclipses are very rare.
Hybrid eclipse
How to watch the eclipse safely
Observing a solar eclipse directly with the naked eye can cause permanent eye damage so observers must be very careful. Note the following things when observing a solar eclipse such as not being observed directly with the naked eye.
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Observe the eclipse indirectly or use a specialized filter such as a 14 welder’s filter or a solar filter from the Astronomy Club.
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Observation of the eclipse with tinted needles (black glasses), X-ray films, floppy disks, and video tapes is not guaranteed because these types only reduce the brightness but do not prevent harmful radiation.
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We can also use a card to capture the image of the Sun through a pair of binoculars or a small telescope, in addition, we can also cut a small round hole in the cover and observe the image of the Sun through the round hole. there on the ground.
How to watch the eclipse safely
Frequently asked questions about solar eclipses
Does the eclipse happen during the day or at night?
During the day, it is possible that the moon lies between the earth and the sun, so a solar eclipse occurs during the day.
Does the eclipse happen during the day or at night?
How are solar and lunar eclipses different?
Relative position
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Eclipse: The Moon is in the middle of the distance from the Sun to the Earth
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Lunar eclipse: The Earth is in the middle of the distance from the Sun to the Moon
Time takes place
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Solar eclipse: During the day, need to wear glasses to observe
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Lunar eclipse: At night, visible to the naked eye
Observation site
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Eclipse: In some places in the shadow or semi-darkness of the Earth
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Lunar Eclipse: Visible from anywhere in the dark side of the Earth
Frequency of happening
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Solar eclipse: At least 2 times and up to 5 times in 1 year
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Lunar eclipse: Only happens about 1-2 times a year, every 5 years there will be 1 year that doesn’t happen
See also: What is a lunar eclipse? When does a lunar eclipse happen?
How are solar and lunar eclipses different?
Beautiful pictures of the eclipse phenomenon
The moment the Vietnamese plane ‘passes through’ the rare eclipse
Admire the total solar eclipse in the US
Eclipse ‘Ring of Fire’ in 2021
Brilliant “annular” solar eclipse
Annular solar eclipse
Reference : What is a partial lunar eclipse, when does it happen?
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