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Space probe – Introduction

space probe is a scientific space exploration mission in which a robotic spacecraft leaves the gravity well of Earth and approaches the Moon or enters interplanetary or interstellar space (see list of probes by operational status for a list of active probes); The space agencies of the USSR (now Russia and Ukraine), the United States, [...]

Cosmic dust – Introduction

Cosmic dust is a type of dust composed of particles in space which are a few molecules to 0.1& mm in size. Cosmic dust can be further distinguished by its astronomical location; for example: intergalactic dust, interstellar dust, interplanetary dust (such as in the zodiacal cloud) and circumplanetary dust (such as in a planetary ring). [...]

Astrobiology Field Laboratory – Power source

It was suggested that the Astrobiology Field Laboratory use radioisotope thermoelectric generators (RTGs) as its power source, like the ones to be used on the Mars Science Laboratory. The radioactive RTG power source was to last for about one Martian year, or approximately two Earth years. Solar power is not an efficient power source for [...]

Supernova nucleosynthesis – Elements fused

Adapted from the Wikipedia article Supernova nucleosynthesis, under the G. N. U. Free Documentation License. Please also see http://en.wikipedia.org/wiki

1960 in science – Astronomy and space exploration

Space Astronomy

* April-July – Cornell University astronomer Frank Drake begins searching for signs of extraterrestrial intelligence with Project Ozma at the National Radio Astronomy Observatory at Green Bank, West Virginia. * May 15 – Sputnik 4 is launched into Earth orbit. * August 19 – Sputnik program: The Soviet Union launches Sputnik 5 with the dogs [...]

Astronomy – Specific subfields

Astronomy

Solar astronomy The solar system is subdivided into the inner planets, the asteroid belt, and the outer planets. The inner terrestrial planets consist of Mercury, Venus, Earth, and Mars. The outer gas giant planets are Jupiter, Saturn, Uranus, and Neptune. Beyond Neptune lies the Kuiper Belt, and finally the Oort Cloud, which may extend as [...]

AT Microscopii – Astrometry

According to SIMBAD AT Mic has year 2000 (J2000) equatorial coordinates right ascension (RA) declination (Dec) due to Earth orbit precession from AT Mic at J1950 RA Dec . It has a stellar parallax in milliarcseconds (mas) of 97.80, or 10.22 parsecs (33.33 ly). Adapted from the Wikipedia article AT Microscopii, under the G. N. [...]

Solar mass – Introduction

Gravitational Astronomy

solar mass (begin{smallmatrix}M_odotend{smallmatrix}), , is a standard way to express mass in astronomy, used to describe the masses of other stars and galaxies. It is equal to the mass of the Sun, about two nonillion kilograms or about 332,950 times the mass of the Earth or 1,048 times the mass of Jupiter. :M_{odot}=( 1.98892 pm [...]

Vision for Space Exploration – Outline

Space Exploration

The Vision for Space Exploration seeks to implement a sustained and affordable human and robotic program to explore the solar system and beyond; extend human presence across the solar system, starting with a human return to the Moon by the year 2020, in preparation for human exploration of Mars and other destinations; develop the innovative [...]

Memorial Museum of Astronautics – History

Astronautics

Though the space monument’s tower was erected in 1964, the memorial museum did not exist for another seventeen years. Opening ceremonies took place on April 10, 1981, to commemorate the 20th anniversary of the day Yuri Gagarin became the first human to orbit the Earth in space.. Originally the museum focused almost exclusively on the [...]

Israel Space Agency – Vision

The agency vision as defined by the guiding committee in July 27, 2005 states: “Space research and exploration is an essential instrument for the defense of life on Earth; the lever for technological progress; the key to existing in a modern society; essential for developing an economy based on knowledge; and the central attraction for [...]

Binary star – Introduction

Stellar Astrophysics

binary star is a star system consisting of two stars orbiting around their common center of mass. The brighter star is called the primary and the other is its companion star, comes, or secondary. Research between the early 1800s and today suggests that many stars are part of either binary star systems or star systems [...]









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