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Comet

Comets fascinate the human mind since ancient people first noticed the white tail streaking through the night starry sky. We remember the date when the comet flies past the Earth once a century or even less often and remember all our lives. In the middle ages in Europe, the appearance of comets was often linked to various natural disasters and diseases. In religion, these heavenly bodies also play an important role. For example, in the New Testament, the comet heralded the birth of Christ.

Astronomers find comets also interesting and fascinating space objects, because they are witnesses of great historical events and even carry evidence of them.

The comet is a relatively small object in our solar system, usually having a diameter of several kilometers. Sometimes called “dirty snowballs” because of their component substances. Usually comets are composed of the following four elements:

Dust

Ice (water, ammonia, methane, carbon dioxide)

Some organic materials (e.g., resin)

Rocky ground (optional) Continue reading

Planet in February 2016

In February, continuing a run of parade of the five planets – mercury, Venus, Saturn, Mars and Jupiter lined up in the morning sky. In early February, their background will be the sickle of the waning moon, and by the middle of month two of the five planets will become unavailable for visual observations of mercury and Venus, disappearing into the rays of the rising Sun. Jupiter is in its best appearances in 2016. Uranus and Neptune gradually complete its visibility in the evening sky. The sun moves through the constellation of Capricorn, February 15, passing in the constellation of Aquarius.

The moon will come together with these planets: 1 February when the lunar phase is from 0.5 to Mars, on 4 February when the lunar phase 0.2 to Saturn, on 6 February when the lunar phase is 0.08 – Venus and mercury, 10 February when the lunar phase 0,03 – with Neptune, on 13 February when the lunar phase 0.25 and with Uranus, on 24 February when the lunar phase 0,97 – with Jupiter. For observations it is better to choose nights when the Moon is near the full phase passes close to the observed planet. Continue reading

What engine will go to the stars?

I must say that the problem of space distances increasingly asserting itself. Chemical rockets on its effectiveness has exhausted itself for the future. Even the nearest planets of the Solar system on them to fly extremely long. Nuclear space engines while not in orbit, but on paper. Ion on a large scale. The spacecraft with solar sails will be valid only within the Solar system.

What engine to fly to the stars and how? After all, even with a nuclear engine will take flight for decades and centuries! Why? Because, according to theories, it is impossible to exceed the speed of light. And by estimations of astronomers, the nearest star to Earth with exoplanets (a planet similar to earth) is at a distance of 13 light years.

It is about exoplanet Kapteyn b, which is presumably suitable for life. For those who do not know: for light year, the astronomers believe the distance that a beam of light passes in our earth year at the speed of 300,000 kilometers per second. Other discovered exoplanets: Gliese 832c (16 light years), Gliese 667 Cc (22,7 light years), Kepler 186f (500 light years), Kepler 62f (1200 light years). But on a normal ship flight to the nearest star to us (alpha and Proxima Centauri – the distance in four and a half light years) will take time-75 thousand years. Of course, not light, but ordinary, earthly years. Continue reading

How does Halley's comet
Halley's comet is a bright, unique comet with a period of return to the Sun of about 75-76 years, which is visible even to the naked eye. The official astronomical…

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In 2016 will experience the ship for space tourists
In the second quarter of 2016 the American company XCOR plans to test the first of three versions of the new spacecraft, the Lynx Mk.1, designed for space travel tourists.…

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