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The bombardment of comets

Possibly, comets brought water to Earth

To see exactly what is in the comet, it is necessary to analyse its substance with the help of different high sensitive devices, bringing samples to Earth. But aboard a small spacecraft such devices are difficult to place, because the size of the station Stardust 1,7×0,7×0,7 meters – about the same size as the Desk. How to take a sample of matter, flying from the comet’s nucleus at high speed? Space standards Stardust was moving slowly relative to the comet, about one and a half times slower than fly around the Earth artificial satellites. However, even this speed was several times greater than that of the bullet, the station flew over one second 6 km from the Contact of dust particles with the container of solid material at this speed (more than 20 thousand km/h) would have led to their strongest heating and evaporating. The only way to mildly catch and stop these dust particles, turned out to be a trap made of unique material – aerogel, which was established in 1931, but the big distribution has not received. Continue reading

Astronomer Fyodor Bredikhin

Astronomer Fyodor Bredikhin was born in 1831 in the city of Nikolaev in the ancient noble family.

To 14 years Bredikhin was home-schooled – in the estate of her father Colonie near Kherson. Then was sent to boarding school at Richelieu Lyceum in Odessa, and four years later transferred to the Lyceum. However, studying in the lycée he did not like, and in 1851 he transferred to Moscow University physico-mathematical faculty.

Bredikhina was interested in physics, but, obeying the fashion of those years, he intended to follow in the footsteps of his father and uncle, that is certainly to enroll in the naval service or in the artillery. Only in the last year after practical work in the Observatory Bredikhin became interested in astronomy.

In 1862 he defended his master’s thesis “On the tails of comets”. This study as would be anticipated the main direction of its future work in astronomy.

In 1867 Professor Bredikhina was granted planning a business trip. Good knowledge of the language enabled him, while in Italy, to be familiar with the works of the Society of spectroscopy. Many Italian researchers have become his friends, including the famous discoverer of the “canals” of Mars the astronomer Schiaparelli. Continue reading

The largest planet

People were engaged in agriculture in the stone age, 30 – 35 thousand years ago. This is evidenced by the notches on animal bones and rocks, cave paintings. This is, perhaps, the earliest “scientific notes”, in which the authors noted the different phases of the moon and count days and nights.

Monitored by our astronomical instruments, the universe consists by weight of about 76 percent hydrogen and 23 helium. Only slightly more than one percent accounts for all other elements of the periodic table.

It is estimated that the galaxy contains more than a hundred and twenty billion stars and to represent its enormous size, we will give one comparison: if the path from the Sun to Earth light travels in 8 minutes, the diameter of the galaxy it will for a hundred thousand years.

To show the progress made over half a century in the study of the Universe, astronomer Paul Couderc came to a startling comparison. Suppose that all known astronomy to 1900 area of the Universe displayed on the plan area of one square meter. Continue reading

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The history of the Russian space
At the science Museum in London opened a major exhibition "Cosmonauts: Birth of the space age". It was to be the culmination of the cross year of Russia and great…

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Do I need to be perfectly healthy to fly in space?
The main problems during space flight are considered motion sickness, fatigue, dehydration, loss of appetite and back pain The astronauts can perform on the International space station not more than…

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Long space flights
Russian scientists in collaboration with foreign partners have classified the threats to the health of astronauts during long expeditions, including during the flight to Mars, said "Interfax-AVN" on Monday, the…

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