Planetesimal — Planetesimals are solid objects thought to exist in protoplanetary disks and in debris disks.A widely accepted theory of planet formation, the so called planetesimal hypothesis of Viktor Safronov, states that planets form out of dust grains that… … Wikipedia
Science and technology in Iran — Science and technology in Iran, formerly known as Persia, have a history, like the country itself. Persia was a cradle of science in earlier times. Persian scientists contributed to the current understanding of nature, medicine, mathematics, and… … Wikipedia
Manatee — For other uses, see Manatee (disambiguation). Manatees Antillean manatee Scientific classification Kingdom … Wikipedia
Global dimming — is the gradual reduction in the amount of global direct irradiance at the Earth s surface that was observed for several decades after the start of systematic measurements in 1950s. The effect varies by location, but worldwide it has been… … Wikipedia
Research funding — ] .Most research funding comes from two major sources, corporations (through research and development departments) and government (primarily carried out through universities and specialised government agencies). Some small amounts of scientific… … Wikipedia
Planetary migration — occurs when a planet or other stellar satellite interacts with a disk of gas or planetesimals, resulting in the alteration of the satellite s orbital parameters, especially its semi major axis. The generally accepted theory of planet formation… … Wikipedia
Mladeč — Municipality Coat of arms … Wikipedia
Douglas Warrick — Douglas Warrick, Ph.D., is an assistant professor in biophysics at the zoology department of Oregon State University, specializing in the study of functional/ecological morphology, aerodynamics, and the evolution of vertebrate flight, working… … Wikipedia
Late Heavy Bombardment — The Late Heavy Bombardment (commonly referred to as the lunar cataclysm, or LHB) is a period of time approximately 3,800 to 4,100 million years ago (mya) during which a large number of impact craters are believed to have formed on the Moon, and… … Wikipedia
Amorphous ice — is an amorphous solid form of water, meaning it consists of water molecules that are randomly arranged like the atoms of common glass. Everyday ice is a polycrystalline material. Amorphous ice is distinguished by its lack of long range order.… … Wikipedia
Influenza pandemic — Note: For information about the content, tone and sourcing of this article, please see the tags at the bottom of this page. An influenza pandemic is an epidemic of an influenza virus that spreads on a worldwide scale and infects a large… … Wikipedia