Astronomers and young people on June 26 observed the first partial lunar eclipse in 2010 in Vietnam. Here are some pictures from VietNamNet and VNExpress:

Astronomers and young people on June 26 observed the first partial lunar eclipse in 2010 in Vietnam. Here are some pictures from VNExpress:

Vietnam to see longest solar eclipse in 1,000 years today

A partial lunar eclipse occurs when only a portion of the Moon enters the umbra. When the Moon travels completely into the Earth’s umbra, one observes a total lunar eclipse. The Moon’s speed through the shadow is about one kilometer per second (2,300 mph), and totality may last up to nearly 107 minutes. Nevertheless, the total time between the Moon’s first and last contact with the shadow is much longer, and could last up to 3.8 hours.

The relative distance of the Moon from the Earth at the time of an eclipse can affect the eclipse’s duration. In particular, when the Moon is near its apogee, the farthest point from the Earth in its orbit, its orbital speed is the slowest. The diameter of the umbra does not decrease much with distance. Thus, a totally eclipsed Moon occurring near apogee will lengthen the duration of totality.

Youngsters in HCM City prepared astronomical telescopes at 5pm.

People grouped up on the roof of a high-rise building in HCM City to wait for the partial lunar eclipse.

Members of HCM City-based Astronomy Club instructed kids how to use astronomical telescope.

The sky before the moon appeared.

When the moon began to appear.

The first partial lunar eclipse in 2010.

PV