Details: The upcoming lunar eclipse will be a "partial" lunar eclipse. At least two partial lunar eclipses happen per year, but total lunar eclipses are rarer. Lunar eclipses usually last a few hours, per NASA.
A lunar eclipse occurs when the Earth moves in between the sun and the Moon and blocks the sunlight that is usually reflected by the Moon. Instead of sunlight hitting the Moon and causing it to shine, Earth's shadow falls on it.
Lunar eclipses can only happen when there's a full Moon.
The last lunar eclipse, a total eclipse, occurred on Jan. 20, 2019. It was also the last lunar eclipse to be visible from the U.S.
There are three different types of lunar eclipses: a total lunar eclipse, a partial lunar eclipse and a penumbral lunar eclipse.
A total lunar eclipse
A partial lunar eclipse occurs when only part of Earth's shadow covers the Moon. During a partial lunar eclipse, Earth's shadow looks dark on the side of the Moon facing Earth.
A penumbral lunar eclipse occurs when the Moon is in Earth's outer shadow. These can be hard to see."
"A solar eclipse occurs when the disk of the moon appears to cross in front of the disk of the sun. A total solar eclipse — like the one that crossed the U.S. on Aug. 21, 2017 — occurs when the disk of the moon blocks 100 percent of the solar disk.
A partial eclipse occurs when the moon covers only part of the sun. If the moon passes directly in front of the sun when it is near apogee, the point in its elliptical orbit where it is farthest from Earth, skywatchers will see an annular eclipse, also known as a "ring of fire."
"On Jan. 5-6, 2019, a partial eclipse was visible from northeast Asia and the north Pacific. A total solar eclipse will follow on July 2, and it will be visible almost exclusively over South America.
Last but not least, an annular solar eclipse will occur over Saudi Arabia, India and southeast Asia on Dec. 26, and it will appear as a partial eclipse over Asia and Australia.
Nearly two years after the Great American Solar Eclipse of 2017, the world will once again have a chance to experience totality, when the moon completely blocks the sun, turning day into night as its 125-mile-wide (200 kilometers) shadow moves across the surface of the Earth.
On July 2, 2019, the moon will block the sun over the South Pacific Ocean, Chile and Argentina. Other parts of South America will be able to see a partial eclipse.
Most of this eclipse will be happening over the Pacific Ocean, where the partial eclipse starts at 12:55 p.m. EDT (1655 GMT).
The third and final solar eclipse of the year will be a "ring of fire" eclipse on Dec. 26, and it will be visible from Saudi Arabia, Qatar, India, Sumatra, Borneo, Guam and the Philippines. Skywatchers in other parts of Asia, Australia and Africa will be able to see a partial eclipse.
During this eclipse, the moon will cross directly in front of the sun. However, because the eclipse occurs just a few days after the moon reaches apogee — its farthest distance from Earth — its apparent size in the sky will be smaller than the sun.
This means that it won't block the sun entirely, but it will instead turn the sun into a blazing "ring of fire" from Earth's perspective. "