Pallas (asteroid) Dictionary of astronomy, letter P It is the second asteroid that was discovered after Ceres, by astronomer William Olbers, on March 28, 1802. Pallas revolves around the Sun in 4.61 years, in a pretty orbit eccentric inclined about 43 degrees with respect to that of the Earth.
Located southwest of the city of Shiprock, in New Mexico, the strange Shiprock Mountain is protected territory of the Navaja Nation. It rises around 600 meters above the New Mexico desert, and has been the protagonist of a good number of western movies and novels. It is currently the focus of many photographers.
The most active volcanic body in the Solar System, Io, is 3,600 kilometers in diameter, almost the size of the only large natural satellite on planet Earth, our Moon. Gliding through Jupiter at the end of the millennium, the Cassini probe captured this overwhelming view of the Io asset with the much larger gas giant as a backdrop, offering an impressive demonstration of the relative size of the ruling planet.
Kepler and the orbits of the planets Johannes Kepler was a mathematician and astronomer, a key figure in the scientific revolution for his laws on the orbit of the planets in his movement around the Sun. Johannes Kepler (1571-1628) was born in Weil der Stadt, Germany, on December 27, 1571. His family was Lutheran and the child, of premature birth, was hypochondriac, weak in nature, and suffered a fragile health throughout his life.
Isotropic Dictionary of astronomy, letter I It is a physical characteristic that is attributed to a material system when it has the same physical properties in all directions, in the sense that if quantities such as electrical and thermal conductivity, dilation, etc., are not measured They depend on the address.
Al-Khwarizmi, algebra and algorithms Mahommed ibn Musa al-Khwarizmi was an Arab mathematician, born in Kharizm (now Jiva, Uzbekistan) in 780. Then Caliph Harun al-Rashid, fifth caliph of the Abbasid dynasty reigned. The capital was in Bagdag. Harun had two children and at his death, there was a war of succession between the two brothers, al-Amin and al-Mamun.