Space exploration mankind is just beginning. It’s only been 47 years since the launch of the first artificial satellite. At the dawn of the space seemed to fly on the next planet there are very few. The great powers of the world tacitly competed for the right to be the pioneers of space. As you know, the palm in this area belonged to the Soviet Union first launched into space man.
After the launch of Yuri Gagarin the world community recognized the absolute leadership of the USSR. But the main competitor – the United States of America – was not shared by the tumultuous enthusiasm about another giant leap of progress. And if the Soviet Union existed, the phrase “Catch up and overtake America!”, before members of the NASA task was to restore the eroded national prestige ahead of the Soviet Union in the space race. Three weeks after the flight of the first American astronaut in space, John F. Kennedy vowed America, after ten years since the Americans landed on the moon.
Indeed, on July 21, 1969 American astronaut first stepped on the moon. For Americans, this event was no less significant than the discovery of America or the Declaration of independence. Around the globe spread the pictures depicting the first inhabitants of the moon under the stars and stripes, and later shots of the film depicting a historic moment. With them and began don’t setaside this time the dispute about the lunar program. Continue reading
Recently a team of American researchers said that the now popular space tourism can be dangerous for climate of the planet. However, many scientists refer to this statement with skepticism. My opinion on this subject the correspondent was expressed by one of the leading experts on space travel, Professor Alexander Bolonkin.
Recently the journal Geophysical Research Letters has accepted for publication an article in which a group of researchers suggests that the currently popular space tourism can be dangerous for climate of the planet. Although it is not yet printed, about this study already talking in many leading online publications. All of the authors of the publications seem to fully support the researchers ‘ view regarding the danger of space travel.
What a project to promote space so scared of scientists from the Aerospace Corporation in Los Angeles (USA)? The fact that, in their view, flying back and forth space “shuttles” are left in the upper atmosphere is a lot of soot, which is a product of incomplete combustion of nuclear fuel. A group of researchers led by Martin Ross built a computer model of such contamination, based on information from business plans for space tourism in ha by 2020, and emissions estimates developed spacecraft SpaceShipTwo company Virgin Galactic’s. Continue reading
Space when observed with the naked eye
Comets and meteors
Unlike stars and planets that the naked eye perceives as a luminous point, the comet is observed in the form of an elongated spot, in which through careful observation can see the relatively bright concentration – “head” and a conical “tail”. With the aid of the telescope each year find 5-10 comets, but rarely any of them are so bright that accessible to observation with the naked eye. Like planets, comets move around the Sun. But unlike the planetary orbits of the trajectory of comets typically have very elongated. The periods of revolution around the Sun fills the interval from a few years (comet Encke is for 3.28 years) to several thousand years (comet Hale-BOPP – 3000 years).
The comet nucleus, from which emerge jets of gas, plasma and dust all the more intense, the closer to the perfect Sun the comet is a huge (from kilometers to tens of kilometers in diameter) snowball. It is composed of molecules containing hydrogen, oxygen (e.g., H 2 O), carbon and nitrogen, as well as from dust, which escapes as ice sublimation (i.e., in the transition to the gaseous state under the action of radiation of the Sun). In the core there are larger solid particles. Continue reading