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Profile Documents Logout
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Sample
Sample

... 22) Earth is the only known place in our solar system where water can exist in all of its three phases–solid (ice), liquid, and gas (water vapor). Answer: TRUE 23) Without the special planetary conditions that allow abundant water to be present in all its phases, life as we know it couldn't exist on ...
Some Concepts of Physics
Some Concepts of Physics

... • Efforts be continued to refine experiments that link the unit of mass to fundamental constants with a view to improving the connection between macroscopic and microscopic masses and the realization of macroscopic mass measurements in terms of a fundamental definition of the ...
THE BIG BANG THEORY
THE BIG BANG THEORY

... • 1960: spectroscopic studies of stars showed that the helium accounted for 20-30% of the mass of stars, the rest (70-80%) being mostly hydrogen. • However, 24% of the matter in the entire universe is due to Helium…star formation of Helium couldn’t account for all that Helium! • Some, if not most, o ...
Astro 27 Solar System Formation and ExoPlanets Slide Show
Astro 27 Solar System Formation and ExoPlanets Slide Show

... nebula while it was hot enough (>1600K) for CAI material to not yet have solidified. • Gritschneder et.al. 2011 hydro simulations show a massive star supernova (type II SN) within a Giant Molecular Cloud, and 5pc away from a reasonble overdensity, would both compress the overdensity cloud to initiat ...
Dwarf Planets
Dwarf Planets

... • In the late 1800’s Lowell predicted a ninth planet. • It was discovered in 1929 as a faint star that moved slightly each day. • Pluto’s orbit is sometimes inside Neptune’s. ...
Sample Final - IUPUI Physics
Sample Final - IUPUI Physics

... D) nothing 48) Which of the following stars will undergo a supernova at the end of its lifetime? A) a star the mass of the sun B) a star at least 10 times the mass of the sun C) a star less than half the mass of the sun D) all of these stars will undergo a supernova at the end of their lifetimes 51) ...
Lecture 2
Lecture 2

... These bodies on cooling became small planet's ...
The Sky and its Motions
The Sky and its Motions

... If you look up into the sky, towards the south, then … 1. east is to your right, north is behind you, west is to your left. 2. east is to your left, north is behind you, west is to your right. 3. east is to your left, west is behind you, north is to your right. 4. east is to your right, west is beh ...
ELIZABETH KLARER: UFO Contactee and Space
ELIZABETH KLARER: UFO Contactee and Space

... mirage. They have a little phial about three inches long and they insert it into a niche in their home or the wall of a spaceship. A 3D scene fills the room ~ an advanced form of a holograph. There are no books. They travel a great deal. The young children are taken around the galaxy so they can lea ...
Schrödinger`s Equation derived from Newton`s
Schrödinger`s Equation derived from Newton`s

... is total incompetence to realize that astronomer's study of the same stars and each have different astronomical values and their values differ from satellite values is as clear as water. ...
Venus - Mr. Nussbaum
Venus - Mr. Nussbaum

... What does this planet look like? Venus is sometimes called Earthʼs sister planet, though its similarities with Earth are limited apart from size and relative condition of its surface. It is easily observed with the naked eye and is sometimes called the “evening star” or “morning star.” Venus is cove ...
File - Mr. Gray`s Class
File - Mr. Gray`s Class

...  Please not that if you look these words up, the directions will be backwards because Astronomers pretend like you are living on the planet looking out. For our purposes we define the word as how it looks in the night sky! ...
Answers - Physics@Brock
Answers - Physics@Brock

... 13. The planets change their positions relative to the stars because (a) of the rotation of the Earth. (b) of the Sun’s motion along the ecliptic. (c) of the gravitational attraction between the planets. (d) * planets move in their orbits around the sun. 14. The Milky Way contains (a) hundreds of th ...
a MS Word version.
a MS Word version.

... "weird" about the transition from the liquid hydrogen mantle of Jupiter to its gaseous hydrogen atmosphere? What is metallic liquid hydrogen and how is it related to Jupiter's and Saturn's strong magnetic fields? Both Jupiter and Saturn give off more energy than they receive from the Sun. What are t ...
Answer - Physics@Brock
Answer - Physics@Brock

... 13. The planets change their positions relative to the stars because (a) of the rotation of the Earth. (b) of the Sun’s motion along the ecliptic. (c) of the gravitational attraction between the planets. (d) planets move in their orbits around the sun. 14. The Milky Way contains (a) hundreds of thou ...
Chapter 2 - El Camino College
Chapter 2 - El Camino College

... Axial Tilt of the Earth: Winter and Vernal Seasons (Cont.) ...
here.
here.

... (approximately) is the orbital period of this planet? A) About the same as the earth's orbital period B) Two times slower than the earth's orbital period C) Twice as fast as the earth's orbital period D) Four times slower than the earth's orbital period 5) If our year were twice as long (that is, if ...
Introduction: Gravity
Introduction: Gravity

... do I know about Astronomy and what questions do I have? The Sun Lessons: Begin each lesson with a reflection entry on the essential question(s). After each experience, students should have something new to add to this question. Essential Questions for Sun Lessons: ...
Importance of Biologically Active Aurora
Importance of Biologically Active Aurora

... the Sun’s or less will be subject to stellar flares with fluxes that depend on time scale and stellar spectral type. For example, HZ planets orbiting low-mass, main sequence stars (spectral type dMe) will experience a fluence of 107-109 erg cm-2 roughly once per 100 hours above the atmosphere for se ...
The Resounding Universe
The Resounding Universe

... disciplines. Sight and hearing are complementary senses: eyes are made for looking at celestial bodies and ears to follow their harmonious motions. Aristotle (c. 384 BC – c. 322 BC) explains why mortals cannot hear these sounds. In fact, a sound or a noise can be perceived only when in contrast with ...
Glossary of terms - Universal Workshop
Glossary of terms - Universal Workshop

... equinox: one of the 2 dates each year (about March 21 and September 23) when the Sun crosses the celestial equator. See Ast. Compan., SEASONS. Also, the 2 points on the map of the sky where this happens: the points where the ecliptic crosses the equator. The complementary points are the 2 solstices. ...
The Sun and the Solar System
The Sun and the Solar System

... If you draw lines from your eye to each of two stars, the angle between the lines is the angular distance between the two stars. Note: here we refer to the distance projected to the surface of an imaginary celestial sphere centered at the observer, as if the two objects were in this same spherical s ...
HOLIDAYS HOME WORK
HOLIDAYS HOME WORK

... Q2. Round of the following to three significant figures: i) 20.968 m iii) 2.914 m/s ii) 0.003156 kg iv) 411.27 m2 Q3. State the rules for significant figures followed in the mathematical operations of: i) Multiplication or Division ii) Addition or Subtraction Q4. Find the value of the following upto ...
Conceptual Physics Gravity
Conceptual Physics Gravity

Studying Space Section 2
Studying Space Section 2

... points toward the North Star. • The North Pole sometimes tilts towards the sun and sometimes tilts away from the sun. • When the North Pole tilts towards the sun, the Northern Hemisphere has longer periods of daylight.(Summer in ...
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Astrobiology



Astrobiology is the study of the origin, evolution, distribution, and future of life in the universe: extraterrestrial life and life on Earth. This interdisciplinary field encompasses the search for habitable environments in our Solar System and habitable planets outside our Solar System, the search for evidence of prebiotic chemistry, laboratory and field research into the origins and early evolution of life on Earth, and studies of the potential for life to adapt to challenges on Earth and in outer space. Astrobiology addresses the question of whether life exists beyond Earth, and how humans can detect it if it does. (The term exobiology is similar but more specific—it covers the search for life beyond Earth, and the effects of extraterrestrial environments on living things.)Astrobiology makes use of physics, chemistry, astronomy, biology, molecular biology, ecology, planetary science, geography, and geology to investigate the possibility of life on other worlds and help recognize biospheres that might be different from the biosphere on Earth. The origin and early evolution of life is an inseparable part of the discipline of astrobiology. Astrobiology concerns itself with interpretation of existing scientific data; given more detailed and reliable data from other parts of the universe, the roots of astrobiology itself—physics, chemistry and biology—may have their theoretical bases challenged. Although speculation is entertained to give context, astrobiology concerns itself primarily with hypotheses that fit firmly into existing scientific theories.The chemistry of life may have begun shortly after the Big Bang, 13.8 billion years ago, during a habitable epoch when the Universe was only 10–17 million years old. According to the panspermia hypothesis, microscopic life—distributed by meteoroids, asteroids and other small Solar System bodies—may exist throughout the universe. According to research published in August 2015, very large galaxies may be more favorable to the creation and development of habitable planets than smaller galaxies, like the Milky Way galaxy. Nonetheless, Earth is the only place in the universe known to harbor life. Estimates of habitable zones around other stars, along with the discovery of hundreds of extrasolar planets and new insights into the extreme habitats here on Earth, suggest that there may be many more habitable places in the universe than considered possible until very recently.Current studies on the planet Mars by the Curiosity and Opportunity rovers are now searching for evidence of ancient life as well as plains related to ancient rivers or lakes that may have been habitable. The search for evidence of habitability, taphonomy (related to fossils), and organic molecules on the planet Mars is now a primary NASA objective on Mars.
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