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HOLIDAYS HOME WORK
HOLIDAYS HOME WORK

... Q5. A cubic millimeter of blood sample on microscopic examination is found to have 5 x 106 corpuscles. If an adult person contains 2.5 litres of blood, find the order of total number of red corpuscles in it. Q6. The diameter of a sphere is 2.34 cm. Calculate its surface area and the volume with due ...
The ExOoS Mission - Extraterrestrial Octopus on Steroids
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... allowed the detection and the study of living organisms and their traces in environments traditionally unconceivable to host life (Harrison et al. 2013). Life is a common phenomenon on earth, having been detected in almost any kind of environment; from acidic lakes such as Rio tinto in Spain, to the ...
What Can We See in the Night Sky?
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Watch the episode titled “The Milky Way” from the series “The
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PPT - University of Delaware
PPT - University of Delaware

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Scientific Method, Numbers, Distances
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... astronauts on the Moon and flight controllers on Earth? A manned mission to Mars is planned within the next 50 years. The minimum distance between Earth and Mars is 55 million km. What would the minimum delay be between sending a question from Earth and getting an answer back from the Martian colony ...
AP Physics Multiple Choice Practice – Gravitation 1. Each of five
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... 25. Two artificial satellites, 1 and 2, are put into circular orbit at the same altitude above Earth’s surface. The mass of satellite 2 is twice the mass of satellite 1. If the period of satellite 1 is T, what is the period of satellite 2? (A) T/2 (B) T (C) 2T (D) 4T 26. A planet has a radius one-ha ...
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The Earth in Space and finding where we are.

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... •These objects orbit the sun and have enough gravity to pull themselves into spheres, but they have other objects in the area of their orbit. •When scientists discovered other objects that were at least Pluto’s size, Pluto was demoted to a dwarf planet. COMETS •Loose collections of ice , dust, and s ...
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Extraterrestrial life



Extraterrestrial life is life that does not originate from Earth. It is also called alien life, or, if it is a sentient and/or relatively complex individual, an ""extraterrestrial"" or ""alien"" (or, to avoid confusion with the legal sense of ""alien"", a ""space alien""). These as-yet-hypothetical life forms range from simple bacteria-like organisms to beings with civilizations far more advanced than humanity. Although many scientists expect extraterrestrial life to exist, so far no unambiguous evidence for its existence exists.The science of extraterrestrial life is known as exobiology. The science of astrobiology also considers life on Earth as well, and in the broader astronomical context. Meteorites that have fallen to Earth have sometimes been examined for signs of microscopic extraterrestrial life. Since the mid-20th century, there has been an ongoing search for signs of extraterrestrial intelligence, from radios used to detect possible extraterrestrial signals, to telescopes used to search for potentially habitable extrasolar planets. It has also played a major role in works of science fiction. Over the years, science fiction works, especially Hollywood's involvement, has increased the public's interest in the possibility of extraterrestrial life. Some encourage aggressive methods to try to get in contact with life in outer space, whereas others argue that it might be dangerous to actively call attention to Earth.
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