The Earth: A water planet?

The Earth is the planet of our solar system where almost 70% of it is covered by water that makes up the oceans. This is due to the combination of the profusion of the chemical in the solar system, hydrogen, which is the most abundant element in the universe and oxygen, one of the most common in nuclear reactions that occur within the stars. To this is added that the atmosphere created in the surface conditions temperature and pressure close to the triple point of water,

The Earth

Earth is the third planet in our solar system, fortunate place in the solar system we inhabit. Ours is the only planet in the solar system, enclosed regularly by water, as well as being the only one with an atmosphere is mostly nitrogen and oxygen. His temperature various life suitable for the way we see it, range from -50 ° C to 50 ° C, with an average 22 º C. Water has created a system of movement and erosion unique in the solar system. The planet we populate is a rarity that still cannot find a similar model or in our solar system or other systems that are discovered, so far, which appear unapproachable.

Venus

The second planet Venus in our solar system is the closest to Earth in accumulation and dimension, is nearly round, no substantial destruction. It is the brightest star in the sky after the Sun and the Moon. It is visible after sunset or before departure at no great distance from it, why is only visible during the first hours after sunrise and evening star, or during the last hours before the sunrise as morning star.

The outside of Venus is a real hell, enclosed by a thick fatal cloud cover; temperature is 500 º C, organism responsible greenhouse. This defines it as the planet with the highest temperature of the solar system and also the most volcanic.

Mercury

The second smallest planet Mercury in the Solar system following Pluto (no more Pluto creature a planet, Mercury become smaller) and also the least thick of the four rocky worlds close to the Sun are grouped in the classification of the planets land called by its composition. It follows through respect by Mariner 10, NASA; the center of Mercury was melted by the lava that flowed to the surface, in addition, Mariner found a weak magnetic field. To the knowledge acquired, it is believed that the magnetic fields remain even if the interior part is melted.

Our Sun

Show the Sun’s surface impression, recognized because the round off as it appear in ultraviolet light, graceful from the Sun to shape the solar wind.  (Courtesy by SOHO) . SOHO is a project of international cooperation Between ESA and NASA.

Every feature of the outline image ground magnetic structure. The hottest areas appear almost white, while the darker red areas indicate cooler temperatures. The Sun is the nearest star to Earth, is who has made life possible on our planet. It belongs to the classification of spectral class G2 dwarf (intermediate), has a special feature that differentiates it from a multitude of stars that populate our Milky Way Galaxy.

Insecure border in the form of galactic cosmic rays

The detection advise that the defensive border that separate our solar system from the rest of the galaxy lack the bow shock, because confirmed in the current scientific theories and could have implication on how much radiation (in the form of galactic cosmic rays) enters our solar system. For about a quarter of a century, researchers believed that the heliosphere is moving through the interstellar medium at a rate fast enough to form a bow shock. However, IBEX data have shown that the heliosphere actually moves through the local interstellar cloud at 83,685 kilometers per hour, about 11,200 kilometers an hour slower than previously thought. The bow shock would ionize gas or plasma changes abruptly and discontinuously in density in the region of space that is ahead of the heliosphere.

Our solar system is not protected from the rest of the galaxy. Why?

Fresh explanation of the solar system's borders have unwavering that the Sun moves through space at a speed lower than estimated so far, prevent form the bend over shock that evidently marked the border between our solar system and interstellar medium. The discovery suggests that the protective boundary that separates our solar system from the rest of the galaxy that has no bend over shock, which could have implications for how much radiation (in the form of galactic cosmic rays) coming into our solar system.