The planet Mars is one of the brightest objects in our night sky, even visible to the naked eye and resembles a bright red star. About every two years, our planet and Mars is a maximum converging. Such an event in astronomy is called “confrontation”. At this point, Mars will be only fifty-five millions of miles from Earth. People capitalize on that by sending to the Red Planet during the confrontation spaceships. So how much to fly to Mars ?
The orbit of Mars and Earth
The complete journey from Earth to Mars takes between 150 to 300 days to allow for the speed run, the location of the planets and the length of the path, which must pass the spacecraft. In this case the dominant factor is only the amount of fuel. The more fuel, the faster it will take flight.
History of flights to Mars
The first ever space ship, committed trip Earth-Mars, was created by NASA’s Mariner 4. It was launched in late November 1964 and appeared on Mars July 14, 1965. Mariner 4 reached Mars in 228 days. 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
Good Christmas gift for this year all lovers of astronomical observations . New for 2015, the comet called Lovejoy C/2014 Q2 will reach visible magnitude, making it visible to the naked eye.
Comet Lovejoy was discovered on 17 August 2014 in Australia through a 0.2-metre telescope, the Schmidt — Cassegrain. It became a discoverer Terry Lovejoy, who has already delighted us with the discovery and became famous because of this. As always, the comet was named in his honor. The comet was first recorded in Terry in the southern constellation the Poop.
7 January 2015 the comet will pass within 0,469 and.e. from the Earth. It crosses the celestial equator 9 January 2015, becoming the object for observation from the Northern hemisphere, and January 30 of 2015 will reach perihelion. The distance of the comet to the Sun at this point will be of 1.29.e. First C/2014 Q2 will move through the constellation of the Dove, and after go into the constellation of the Hare. Continue reading