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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What Differs Drizzle From Similar Phenomena?
Drizzle is a type of light rainfall characterised by very fine water droplets falling from the sky. It typically occurs when the temperature is above freezing, around 5 to 10 degrees Celsius (41 to 50 degrees Fahrenheit), can also happen at slightly colder or significantly higher temperatures. Light drizzle is common in regions with mild or cool climates, especially during transitional seasons like spring and autumn.
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Why Does Fog Appear?
Fog is not just a simple weather phenomenon, it’s a scientific masterpiece. From the scientific point of view, fog is the accumulation of water in the air and the further formation of little condensation products of water vapor. Moreover, the lower the temperature, the more ice crystals are there in the fog instead of water drops.
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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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Astronomical Spring
March 20 is the day of the vernal equinox, after which the length of the day will gradually become longer than that of the night. On the equinox day the Sun will cross the celestial equator and equalize day and night. That will start an astronomical spring in the northern hemisphere.
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Shining Circle Around the Sun or Moon: What is it?
Sometimes we can see a brightly shining circle around the Sun, the Moon, or even an artificial light source (for example, a lantern). This natural phenomenon is called “halo”. It appears because of the refraction of light in ice crystals in the upper atmosphere at an altitude of 5-10 km.
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