Sky
Polar lights are one of the most beautiful natural phenomena on Earth If we were to rank the most beautiful atmospheric phenomena, we would definitely give one of the highest places to polar lights. The ideal time for them is clear frosty nights from September to March at latitudes of about 67–70°.
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Earth
What is “Indian summer” and when does it happen? Mid-autumn is the time for the “return of summer”. Though all of us understand pretty well that a couple of warm and sunny autumn weeks will soon be replaced by the first frost, we continue calling this short period as summer.
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Sky
On the evening of August 31, 2023, we will have the opportunity to witness one of the most significant astronomical events - a supermoon. On this evening, the full moon will approach the Earth at its closest distance this year, offering a mesmerizing celestial spectacle. Our natural satellite will be accompanied by two great planets - Saturn and Jupiter.
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Sky
Perseids starfall from 10 to 20 August. Already next week, starting from August 10, it will be possible to observe the famous Perseids starfall in the night sky. The Perseids are numerous tail particles of the Swift-Tuttle Comet. It last approached the Earth in 1992. The peak of the starfall activity will take place on August 12-13.
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Earth
Meteorological Autumn and Astronomical Autumn are two different ways of defining the seasons: Meteorological Autumn: Meteorological seasons are based on the calendar months and are primarily used by meteorologists and climatologists for consistent and simplified record-keeping and forecasting. In the meteorological definition, autumn is considered to be the three calendar months of September, October, and November in the Northern Hemisphere, and March, April, and May in the Southern Hemisphere.
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The wet-bulb temperature is an important measure of the Earth’s climate and is used to determine the risk of heat stress and heat-related illness in humans and animals. The wet-bulb temperature is the temperature that a thermometer would show if it were covered in a wet cloth and exposed to the air.
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Sky
It is considered that the Moon can be observed only at night. 🌖 However, in fact, it can easily be seen in the afternoon. And by the way, this very question “why the Moon is in the sky during the day” is often asked by children who are much more observant than adults.
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Earth
This year the heat is breaking records in both temperature and duration. Thus we decided to find out where the hottest point of our planet is. It turned out to be the Deshte-Lut desert in the Middle East. 🏜️This sandy-saline desert is located in Iran, its length is about 550 km, and its width is from 100 to 200 km.
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Earth
In order keep safe when it’s hot outside, it’s important to know how hot it really feels. Scientists created something called the Wet Bulb Globe Temperature or WBGT to measure the heat stress in the air. Imagine you have three thermometers: a regular one, a wet one, and one inside a shiny black ball.
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