Periodic comet attracted by the Sun, sent to him, but pass due to the same sensitivity to the solar wind, which causes the surrounding cloud of dust and gases blown away from the Sun. People believe that the tiny particles of solar wind will impact more than large particles, but this assumption is wrong. If this were so, then how to explain the continued existence of the Asteroid Belt, which includes debris of any size is not affected, apparently, by the solar wind. The small object may lose velocity faster than the larger object because of differences in gravity, but if they are sensitive to solar wind, it occurs the same effect, – they are repelled equally. The comet, which (eventually) reach the Sun, with a very repeatable trajectory around the Sun, losing a lot of water vapor so that the ratio of substances in their composition is aligned at the expense of pushing away by the solar wind. In short, they lose their cover. They fly up with acceleration from the external space, but at this time do not change direction, going outside, and face (with the Sun). In fact, comets complete their orbits, coming nearer in the process, getting closer and closer to the Sun. Continue reading
The main problems during space flight are considered motion sickness, fatigue, dehydration, loss of appetite and back pain
The astronauts can perform on the International space station not more than six months. And for good reason.
The loss of muscle and bone mass in zero gravity during this time is so great that the continued presence in space for humans is not possible.
Future space tourists will not go through the same tough training as cosmonauts and astronauts – how flying can affect their health?
In an article published by the British medical journal, argues that the district doctors in British clinics need to be prepared for the fact that in the near future, their patients will begin to wonder whether their body to move space travel.
Only a handful of doctors have sufficient knowledge in the field of space medicine to give expert advice. Continue reading
Jupiter (the astrological sign G) is a planet, average distance from Sun 5.2 a. E. (778,3 million km), the sidereal orbital period of 11.9 years period of rotation (cloud layer near the equator) approx. 10 h, equivalent to the approx. diameter of 142 800 km, the mass of 1.90·1027 kg, atmospheric Composition: H2, CH4, NH3, He.
Jupiter is a powerful source of thermal radiation has a radiation belt and an extensive magnetosphere. Jupiter has 16 satellites (Adrastea, Metis, Amalthea, Phoebe, IO, Europa, Ganymede, Callisto, Leda, Himalia, Lysithea, ELARA, Ananke, Carme, Pasiphae, Sinope), and the ring is approx. 6 thousand km, almost directly adjacent to the planet.
Jupiter, fifth from the Sun largest planet in the Solar system, the largest of giant planets.
Jupiter moves around the Sun in nearly circular elliptical orbit, whose plane is inclined to the Ecliptic plane at an angle of 1°18,3′. The minimum distance of Jupiter from the Sun 4.95 a. E. a maximum of 5.45. E. average – 5.2 a. E. (1 and. E. = 149.6 million km).
The equator is tilted to the orbital plane at an angle of 3°5′; because of the smallness of this angle seasonal variations on Jupiter is expressed very weakly. Continue reading