The sun is on one side, the earth is in the middle and the moon enters behind. This year, the harvest moon, the one that occurs closest to the autumnal equinox, is red when it rises over Sweden.
It rises above the horizon in the east around half past seven. Then the eclipse has already started. Then it lasts for about an hour and a half, says Peter Linde, chairman of the Swedish Astronomical Society and associate professor of astronomy at Lund University.
After that, the lunar eclipse decreases gradually during the night.
A lunar eclipse is visible in Sweden approximately every other year. Unlike solar eclipses, which are only visible in limited areas when they occur, lunar eclipses are visible to roughly half of the Earth's population. Additionally, the moon does not "disappear" during the eclipse, but instead changes color.
With the earth between the sun and the moon, the sun's rays pass through the earth's atmosphere. The red part of the light is bent, and falls on the moon, in a way that other colors in the light do not.
However, there is a risk that the weather will worsen the chances of seeing the blood moon on Sunday. Over the weekend, some clouds are expected to pass over large parts of Sweden. The air is also humid, which can mean foggy evenings and nights.
It's like having an opaque (matte, non-transparent) glass pane between you and the sky, says Maria Svedestig, meteorologist at SMHI.
