Why is the asteroid Icarus named after the son of Daedalus? Detailed answer

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Why is the asteroid Icarus named after the son of Daedalus? Detailed answer

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Why is the asteroid Icarus named after the son of Daedalus?

Discovered in 1949 by the American astronomer Walter Baade, the asteroid Icarus is very modest in size (diameter is approximately 900 meters), but remarkable for its orbit.

At aphelion, Icarus goes to the orbit of Mars, and at perihelion it penetrates inside the orbit of Mercury, approaching the Sun at a distance of 0,341 astronomical units (51 million kilometers). Closer to Icarus, only some comets approach the Sun.

It is for this reason that he was given the name of an ancient Greek mythical hero who rose to the Sun on wings fastened with wax, made by his father Daedalus.

The orbit of Icarus almost intersects with the orbit of the Earth, so that at the closest approach of these bodies, the distance between them decreases to 5-7 million kilometers. Such an approach of Icarus to the Earth occurs every 19 years (in 1996, then in 2015, etc.), but none of them threaten a collision.

Author: Kondrashov A.P.

Random interesting fact from the Great Encyclopedia:

Where did the first real map come from?

The cards of the first man were very primitive, but gradually their language became more complicated. The foundations of this map, made according to all the rules of science, were laid by the ancient Greeks. On the territory of Greece, maps were found that date back to 1500 BC! Researchers of Homer's poem "The Odyssey" do not even doubt that Homer used a map when describing the wanderings of Odysseus.

The first who taught the map to speak the language of scale was the Greek scientist Anaximander, who lived in the XNUMXth-XNUMXth centuries BC. He drew a map of the world, in the center of which was Greece. It was surrounded by then known parts of Europe and Asia. The map was in the form of a circle, along the edges of which the ocean was located.

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Early retirement negatively affects the brain 15.01.2023

Scientists at Binghamton University have found that early retirement can negatively impact the brain and accelerate cognitive decline. The researchers analyzed an array of data on the health status of retirees in China. Scientists believe that the negative impact of early retirement on the brain may be due to a decrease in social activity.

The new study focused on government health data from a pension scheme introduced in China in 2009. Due to rising poverty among older people in some rural areas of the country, the program offered people a stable income if they retired within a few years of reaching age 60.

By collecting decades of data, the researchers were able to compare the health and cognitive outcomes of those participating in the early retirement program with a matching group of people who are still working in their 60s. The results showed that those who participated in the early retirement program showed deterioration in cognitive skills over the following years compared to people near retirement age.

Scientists also showed a more interesting pattern. Although participants in the pension plan showed cognitive decline, they also showed an improvement in overall health. These early retirees tended to reduce their alcohol intake, quit smoking, and generally slept better. According to Plamen Nikolov, one of the project's lead researchers, this interesting discrepancy between general and cognitive health suggests that certain aspects of retirement are likely to negatively affect the brain. The scientist notes:

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The researchers recommend the introduction of policies aimed at buffering the decline in social activity and mental activity. In this sense, retirement programs can generate a positive impact on the health status of retirees without an associated negative impact on their cognitive abilities.

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