Radiometric dating dictionary
Radiometric dating dictionary - last worldwide dating site
Principal asteroids are: 1 Ceres (a dwarf planet), 2 Pallas, 3 Juno, and 4 Vesta.
There are ongoing research studies of the ramifications of prebiotic chemical reactions in early Solar System environments and delivery of organic material from asteroids and comets to the early Earth.
Aphelion: Point in the elliptical orbit of a comet, or asteroid, or planet about the Sun in which it is at its farthest distance from the Sun. Space Program that included 6 piloted lunar landings between 19.
The opposite orbital position is called perihelion. Apollo astronauts collected and returned 382 kilograms of rock and sediment samples from the Moon.
For example, on the Earth the antipode of Hawaii is Botswana.
The term is used commonly in lunar geology to describe locations on the Moon in relation to impact basins.
Most stars in the Universe that have left the main sequence will reach their final evolutionary stage as stars on the asymptotic giant branch (AGB).
Agglutinates: Common particle type in lunar regolith; agglutinates consist of small rock, mineral, and glass fragments bonded together with glass—a glass that is formed by flash heating when micrometeorite impacts melt the lunar regolith.The heat can also release solar-wind-implanted hydrogen and helium from the lunar regolith, causing vesicles (bubbles) in the quickly-quenched glass.Agglutinates are typically tens of micrometers to a few millimeters in size.Anorthosite: An igneous rock made up almost entirely of plagioclase feldspar. ANSMET: (The Antarctic Search for Meteorites) An exploration program to collect meteorites in Antarctica supported by grants from the Office of Polar Programs of the U. [ ANSMET website ] Antenna: A conductor by which electromagnetic waves are transmitted or received.Antipode: A point on the surface of a sphere that is located diametrically opposite another point.The Amazonian Epoch extends from about 2.9-3.3 billion years ago to the present day.