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The family, as well as its sole genus Malacobdella, is characterized by a posterior ventral sucker and a proboscis lacking a stylet. [2] As in other Hoplonemertea, the lateral longitudinal nerve cord is located internal to the body wall muscles, in the mesenchyme .
A few have relatively short but wide bodies, for example Malacobdella grossa is up to 3.5 centimetres (1.4 in) long and 1 centimetre (0.39 in) wide, [9] [18] and some of these are much less stretchy. [17] Smaller nemerteans are approximately cylindrical, but larger species are flattened dorso-ventrally. Many have visible patterns in various ...
First movie of Earth from space made without a human camera operator (contrast to Titov's 1961 movie) [35] April 24, 1967 [36] Surveyor 3: First images and view of a sunset and sunrise over Earth at the same time, a solar eclipse by Earth (a celestial body other than the Moon), from the Moon's surface. [37] [38] April 30, 1967
Earth science or geoscience includes all fields of natural science related to the planet Earth. [1] This is a branch of science dealing with the physical, chemical, and biological complex constitutions and synergistic linkages of Earth's four spheres: the biosphere , hydrosphere / cryosphere , atmosphere , and geosphere (or lithosphere ).
Earth sciences portal; Science portal; Earth science (also known as geoscience, the geosciences, or the Earth sciences) includes all the sciences related to the planet Earth. It is arguably a special case in planetary science, Earth being the only known life-bearing planet known to Homo sapiens. There are both reductionist and holistic ...
Portal:History of science/Picture/2 . An engraving by Albrecht Dürer, from the title page of the Masha'allah ibn Atharī's astronomy treatise De scientia motus orbis (Latin version with engraving, 1504). As in many medieval illustrations, the compass here is an icon of religion as well as science, in reference to God as the architect of creation.
The Chinese government has a released a series of stunning high definition images taken from space by a state-of-the-art satellite. China's Gaofen-1 satellite was launched in April 2013.
EarthScope project logo. The EarthScope project (2003-2018) was an National Science Foundation (NSF) funded Earth science program using geological and geophysical techniques to explore the structure and evolution of the North American continent and to understand the processes controlling earthquakes and volcanoes.