Edmund Halley opening date
Discoverer: named after Edmund Halley opening date: 1758 (first predicted perihelion) Alternate designations: comet Halley (Halley), 1P Orbital characteristics: Age: 2449400.5 (17 February 1994) Aphelion: 35.32.e. Perihelion: 0.586.e. The semi-major axis: 17, 8 and.e. The eccentricity repulsed: 0, 967 Orbital period: 75, 3 and the Inclination of the orbit to the Ecliptic plane: 162, 3 degrees Last perihelion: 9 February 1986 Next perihelion: 28 July 2061 g the Period of revolution around the Solar system: from of 74.4 to 79.2 years. The average value of 76 years. Thanks to a successful “visits” in 1986 to comet Halley spacecraft “VEGA-1 and VEGA-2” (USSR) Giotto (ESA), “Suisei” and “Sakigake” (Japan) scientists got the first pictures of the core and comprehensive information:
a summary of other presentations about the sky
“School of astronomy” – Observation – the basis of astronomy. Major achievements in space exploration. Observation of solar Eclipse on 1 August 2008. Our Galaxy Is. The sun is the nearest star. The sun is the nearest star. The moon is a natural satellite of the Earth. Telescopes. Life and mind in the Universe. Myths and lahendustega sky. The sky over the Office.
“Evolution of stars” – Compression is a consequence of gravitational instability, the idea of Newton. Stars are a basic element of the galaxy. The protostar. Two young black dwarf in the constellation of Taurus. The Orion Nebula. The universe is 98% of the stars. Astronomers are unable to see the life of a star from beginning to end. Graph the evolution of a typical star.
“The formation of planets” – the “eagle” Nebula. Let’s keep the earth the way we found it! Titanium. Magnesium. Almost all the giant planets have satellites and a system of rings. Planetary nebula the Snail. The earth is one of planets of the solar system. The problem of the origin of the planets was considered to be purely astronomical. Planetary Cosmogony.
Black holes – Astronomers observed the supernova explosion. If the beam passes very close to the hole, it can capture it into a circular orbit or get sucked in completely. Astronomer Karl Schwarzschild in the last years of his life he calculated the gravitational field around a mass of zero volume. The structure of a black hole. After using all reserves of nuclear fuel, and termination reactions, a star dies.
“Lunar Eclipse” the Moon is the only satellite of our planet. The Structure Of The Moon. The moon. A sample of lunar soil. The ancient Greeks called the moon Selena. Here is the structure of the Earth. Phases Of The Moon. A full circle around the Earth makes the Moon over the 29.5 days. The moon is full. Earth. Exploration Of The Moon. A small shard of one of the meteorites. Spacecraft Luna 3 was launched October 4, 1959.