movement

Characteristics of comets

In addition, comets can carry the names of the people who discovered them, e.g., comet Halley, comet Machholz, comet shoemaker–levy 9 comet or Mac Note.

Movement and spatial distribution

All comets are members of the Solar system. They, like the planets, are subject to the laws of gravity, but move very peculiar. All the planets revolve around the Sun in one direction (which is referred to as “direct” as opposed to “reverse”) on nearly circular orbits that lie roughly in one plane (the Ecliptic), while comets move in both forward and reverse directions on highly elongated (eccentric) orbits, inclined at different angles to the Ecliptic. It is the nature of motion immediately gives the comet.

Long-period comets (orbital period greater than 200 years) come from regions located thousands of times further than the most remote planets, and their orbits are tilted at all angles. Short-period comets (period less than 200 years) come from the region of the outer planets, moving in the forward direction for orbits lying close to the Ecliptic. Continue reading

Long-term manned space missions is now impossible

The answer to the question of how in the coming years will be Russia’s contribution into the process of full exploration by the inhabitants of the Earth, not yet clear

Before the first manned flights into space, many physicians feared that in weightlessness the astronaut may be a different disease: ulcers and kidney stones, sudden weight loss, softening of bones, decreased muscle tone, the development of sea-sickness, disturbance of the orientation and other misfortunes. But in reality it turned out that astronauts in General are more or less able to adapt to microgravity and not to experience any serious discomfort, especially in flight conditions, the duration of which does not exceed 6-10 months. In order to reduce harmful effects to a minimum, the astronauts, while in orbit, exercise, diet, etc.

But how will affect the human body long-term space flight, lasting several years, physiologists have collected insufficient data.

In light of the active conversations and different messages about the future of manned human flight to Mars, which include the experiment “Mars-500” and recent statements by President Barack Obama . this information is very necessary. Continue reading

Soon everyone will fly into space

Long-standing plans by British billionaire Richard Branson about the organization of space flights is nearing realization. Recently, the head of the Virgin group of companies presented the public with aircraft with a rocket engine called SpaceShipTwo, which will be used for commercial flights into space.

“I know that there are literally thousands wanting to be in space to be able to look out the window, admiring the beautiful Land,” — said the billionaire. At the presentation of SpaceShipTwo in California, he said, dreamed of going into space since then, as seen on TV landing on the moon. Presents the aircraft will undergo tests over the next 18 months, before the first tourists will be able to take a short excursion outside the Earth’s atmosphere. About three hundred people have already applied for the flight is $200 thousand during the six minutes of weightlessness.

SpaceShipTwo, built from lightweight composite materials based on carbon and is equipped with a rocket engine on a hybrid fuel. The basis for its development was the project SpaceShipOne — aircraft, lifting into the air booster. He became the world’s first private space ship and made a series of flights in 2004, reports the BBC . Continue reading

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