VietNamNet Bridge – People in Vietnam and many other countries will have an opportunity to watch the 21st century’s fifth longest total lunar eclipse at 0:00 on June 16 (Hanoi time), according to NASA.

However, it will be difficult to watch the eclipse because at that time the moon is darker than normal, he said.

The moon will have entered the earth’s shadow and be partially eclipsed at 1:22 a.m. when viewers could watch the eclipse with naked eyes, Duy said.

He added that the best time to witness the eclipse is at 2:22 a.m. when the moon will turn reddish and then copper-red at 3:12 a.m. when it is totally eclipsed.

The total eclipse will last until 4:02 a.m. while the lunar eclipse will end at 6:00 am, he said.

Viewers are advised to use binoculars or astronomical telescopes to better watch the eclipse.

A lunar eclipse occurs when the moon passes behind the earth so that the earth blocks the sun's rays from lighting the moon.

This can occur only when the sun, the earth, and the moon are aligned exactly, or very closely so, with the earth in the middle.

Hence, there is always a full moon the night of a lunar eclipse.

Due to different time zones, viewers in European and African countries will see the eclipse between sunset and midnight on June 15 while viewers in Asia, Australia, and New Zealand will see it between midnight and sunrise on June 16.

There will be a partial solar eclipse on July 1, followed by another partial solar eclipse on November 25.

VietNamNet/Tuoi Tre