A meteorite so small that it drifts down to Earth without becoming intensely heated in the earth's atmosphere.
a particle from space that is small enough to be slowed down when it reaches the Earth's atmosphere without being burnt up. Approximately 50 micrometeorites per square meter hit the top of Earth's atmosphere each day.
a meteorite or meteoroid so small that it drifts down to earth without becoming intensely heated in the atmosphere
a meteorite so small that it can pass through the earth's atmosphere without becoming intensely heated
A particle of interplanetary dust too small to burn up in Earth's atmosphere as a meteor, which rains down gently to Earth's surface. Earth accumulates thousands of tonnes of matter through this process annually.
A micrometeorite is a microscopic body of material. Micrometeorites are common in parts of outer space and in Earth orbit, where they are capable of damaging spacecraft , since they impact at such high velocities.
A small extraterrestrial particle that has survived entry into the Earth's atmosphere. The actual size is not rigorously constrained but is operationally defined by the collection procedure. Micrometeorites found on the Earth's surface are smaller than 1mm, those collected in the Stratosphere are rarely as large as 50 micro-m. See also: Meteorite
A small (micro) meteoroid that collides with the surface of a planet, moon or satellite, all having no appreciable atmosphere to destroy the object through frictional heating.
a tiny particle of meteoric dust, so small that it does not burn as it falls to the earth from outer space. [AHDOS