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Sky

What are "White Nights"?

What exactly are “White Nights” and what causes them? This is the name of the long twilight, which lasts all night. From an astronomical point of view, twilight is understood as a period of time when the Sun is shallow below the horizon. During the white nights, natural light remains high.

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Sky

Have You Seen Silver Clouds?

Silver clouds are not just an art installation by Andy Warhol, these actual clouds (also called NLC or noctilucent clouds) can be usually observed in summer until the end of July. Starting late May the end of the month of July it might be possible to see silver or, as they are also called, “polar” clouds in the sky over Northern Europe, Canada and the northern regions of Russia.

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Sky

Aquarids Starfall

In the first dates of May we will be able to watch the Eta Aquariids Starfall. The peak of its activity will be on May 6-7, but overall the shower is visible from about April 19 to about May 28 each year. It will be seen brighter in the Southern Hemisphere, although the residents of the Northern half of the Earth will also be able to watch the starfall.

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Sky

Lyrid Meteor Shower

Get ready for a meteor spectacle! The first spring star rain is on its way, and you won’t want to miss it. On April 21 to 22, we will have a chance to observe the largest meteor shower in the Northern Hemisphere — the Lyrid shower, whose maximum will fall on this night.

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Sky

What is a Katabatic Wind?

Katabatic winds are like chilly mountain slides for air! When the air at the top of mountains or high places gets cold, it becomes heavy. Like a slide in a playground, these high places let the cold, heavy air slide down to the ground. As it slides down, it can go really fast and bring cold weather along with it, like a natural chilly breeze.

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Sky

Sirocco Wind: Warm and Moist from Africa to Europe

There is a wind that travels all the way from North Africa to southern Europe, bringing warmth and moisture along its journey and it is called the Sirocco. The Sirocco likes to visit Southern Italy and the Balkans during the spring and autumn seasons. It happens because of the interaction between high-pressure systems over the Atlantic and low-pressure systems over the Mediterranean.

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Earth

Meteorological vs Astronomical Spring

Meteorological Spring and Astronomical Spring are two ways of defining the start of spring, but they are based on different criteria. Meteorological Spring refers to the three calendar months of March, April, and May in the Northern Hemisphere (or September, October, and November in the Southern Hemisphere). These months are considered to be spring because they generally have milder temperatures and more rainfall than the preceding winter months, and the days start to become longer.

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