Moscow. October 26. An international team of astronomers led by specialists from the Paris Observatory found in the gas tail of comet C/2014 Q2 (Lovejoy) 21 the presence of complex organic molecules, including ethanol and most simplest form of sugar – glycolaldehyde. This is the first in the history of the discovery of alcohol in the substance of the comet.
Scientists have observed comet Lovejoy using a 30-meter radio telescope, located in Andalusia (Spain) and owned by the Institute of millimeter radio astronomy. All observations were made between 13 and 26 January 2015, when the comet was at closest distance of 0.6 astronomical units from Earth.
Spectral analysis showed that in the dust tail of the comet contains 21 types of complex organic molecules. In addition to those already previously detected in other comets (e.g. Hale-BOPP) substances, like ethylene glycol, formic acid and acetaldehyde, the first time scientists were able to detect emission in the monosaccharide – glycolaldehyde and ethyl alcohol. Continue reading
Private Danish company is developing the rocket for manned flight into space
One of the types of development of space tourism is the organization of suborbital space flights. As part of this flight the aircraft moves with a speed less than the first space, that is entering earth’s orbit does not occur. The altitude of suborbital flight is over a hundred kilometers, which severely exceeds the maximum flight altitude is 10 km away.
The successful flights of SpaceShipOne vehicle (this device in 2004, twice within two weeks out into space with people on Board) allowed its creators to announce the creation of the enterprise which will be engaged in sub-orbital space flights tourists.
According to various estimates, in the next decade, the industry of space tourism will be developed to such an extent that every year will be about a thousand sub-orbital flights.
As you know, Michael mills from the National center for atmospheric research in Boulder (Colorado, USA) and his colleagues drew attention to the fact that for each flight in the Earth’s atmosphere gets rather big amount of soot and carbon dioxide. About what can cause these emissions in the near future, scientists wrote in an article published in Geophysical Research Letters. Continue reading
The first space tourists
Man’s flight into space on a commercial basis, both in entertainment and in scientific research, is called space tourism. Currently this game can afford only very rich people of our planet. And if the cost of the first space travel averaged 20-30 million dollars, starting from 2007, the amount increased to 35-40 million dollars.
At the moment all the tourists who flew into space, conducted on the International space station in Russia. The organization of such flights that have occurred on the spacecraft “Soyuz” with the ISS, engaged Roscosmos and its sister company Space Adventures.
Rich space tourists, and there have been 7 people were citizens of foreign States. The first non-professional astronaut, flew in 2001, was an American Dennis Tito. A 60-year-old businessman-a multimillionaire, after preliminary preparation in a specialized center of the Russian Star city, spent together with the crew on orbit for 6 days and circled around the Earth more than 100 times. The second paid tourist, managed to make the ISS a few experiments, became 27-the summer inhabitant of South Africa – mark Shuttleworth. His childhood dream juzhnoafrikanskimi the Mogul could realize in 2002. Continue reading
For the first time people looked up do not romantic, but pragmatic goals on 23 March 1881. Strangely enough, the idea of flying in space came to Nikolai Kibalchich in prison.
A few days before the execution, he developed the original project of the aircraft with oscillating combustion chamber for thrust vector control. Naturally, his request for transfer of drawings to the Academy of Sciences was rejected. Project miracle was not lost and was published only in 1918.
But even before its publication the great Konstantin Tsiolkovsky proposed the idea of using rockets for space flight. A prototype of the device he designed in 1903.
In parallel space the work was in full swing in other countries. In the 1920s, German scientist Hermann Oberth described the principles of interplanetary flight. And his American colleague Robert Goddard began to develop liquid rocket engine. March 16, 1926, a scientist launched the first liquid rocket. She worked on the fuel from gasoline and liquid oxygen. Continue reading
The science and basics of ecology
Small bodies of the solar system
In addition to the major planets around the Sun are also small bodies of the Solar system: a set of small planets and comets.
All thus far discovered more than 100 thousand small planets, called asteroids (starlike), because due to their small size they are even visible in a telescope as points of light, like stars. Until recently it was believed that they all move mostly between the orbits of Mars and Jupiter, making the so-called asteroid belt. The largest object is Ceres, which has a diameter of about 1000 km (Fig. 3). It is believed that the total number of small planets that are larger than 1 km, this belt can reach 1 million But even in this case, their total mass is 1000 times smaller than the mass of the Earth.
Fig. 3. The comparative sizes of the largest asteroids
No crucial differences between the asteroids we see in space with telescopes, and meteorites that fall into the hands of people after they fell from outer space to Earth. Meteorites do not represent any particular class of cosmic bodies are fragments of asteroids. Continue reading