• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
The Study of the Universe
The Study of the Universe

... 7. Explain how spacecraft are launched into orbit. What are some of the challenges that must be overcome? 8. Describe three health problems astronauts experience when they are working aboard the ISS? 9. How do astronauts protect themselves against radiation hazards when they are working outside the ...
Glossary (PDF file)
Glossary (PDF file)

... straight line around which the whole planet spins. Each planet and moon has its own axis around which it spins. ...
Final Exam Prep
Final Exam Prep

... Planets. Terms: solar nebula, planetessimal, terrestrial planet, gas giant planet 5. Ch 28 Minor Bodies of the Solar System pp 718-744 Review pp 723-724 Formation of the Earth’s Moon, How di the Earth’s moon form? How is this different from the moons of other planets? Review Section 2- Movements of ...
Space is Big…
Space is Big…

... It is of spectral type M2 and is about 1600–1900 times the Sun's diameter. If it replaced the Sun in our solar system, it would extend pass the orbit of Jupiter and extend near the orbit of Saturn. ...
Exam #1 Review
Exam #1 Review

... 5. You should know the difference between mass, density and specific gravity! 6. You should be able to take data and plot it on a graph. 7. You should also be able to conduct a scientific experiment using accepted methods of ...
Today`s Powerpoint
Today`s Powerpoint

... Use the theory to predict future behavior Make further observations to test the theory Refine the theory, or if it no longer works, make a new one ...
P101.EXAM1.931.v2 - KFUPM Faculty List
P101.EXAM1.931.v2 - KFUPM Faculty List

... 19) Astronomers have found planets around a star called Upsilon Andromedae, which is at a distance of 44 light years from our solar system. Assume a spacecraft that can travel with a speed of 5  104 km/hr (a typical speed of a present day spacecraft), how long would it take to reach that new planet ...
the Study Guide
the Study Guide

... Glossary of terms Alien: A foreigner. A space alien would be an alien from outer space. Android: A robot with a human form. Atmosphere: The canopy of air surrounding the Earth. It is divided into five layers or "spheres": the Troposphere, Stratosphere, Mesosphere, Thermosphere and Exosphere. The Th ...
Teachers Notes - Edinburgh International Science Festival
Teachers Notes - Edinburgh International Science Festival

... Many different cultures have been discovering and recording constellations for thousands of years, each giving their own shapes, names and stories to them. The most well known constellation names are from the ancients Greeks. They created and named over 40 constellations which are still recognised t ...
File
File

... • Solar System: Our Sun and the planets that move around it, including asteroids, meteors, and comets • Galaxy: A system of millions or billions of stars, together with gas and dust, held together by gravity • Satellite: A man-made object placed in orbit around the earth, the moon, or another plane ...
Quiz # 1
Quiz # 1

... A) day is not exactly 24 hours because of the Earth's periodically varying rotation period. B) Earth's rotation period is slowly increasing because of tidal effects. C) length of the year varies with a period of four years because of precession. D) year is not exactly equal to an integral number of ...
The Solar System
The Solar System

... fluid". Planets formed out of eddies in the fluid. Sun formed at center. Planets in cooler regions. Cloud called "Solar Nebula". This is pre-Newton and modern science. But basic idea correct, and the theory evolved as science advanced, as we'll see. ...
PHYS 215 - First Major Exam MULTIPLE CHOICE
PHYS 215 - First Major Exam MULTIPLE CHOICE

... 19) Astronomers have found planets around a star called Upsilon Andromedae, which is at a distance of 44 light years from our solar system. Assume a spacecraft that can travel with a speed of 5 × 104 km/hr (a typical speed of a present day spacecraft), how long would it take to reach that new planet ...
February 2007
February 2007

... • The sky seems to revolve around us because of Earth’s rotation • Additionally, planets move with respect to the fixed stars, that’s why they are called planets (greek: wanderers) • Due to the planet’s movement in their orbit, and Earth’s orbital motion, this additional motion – the apparent motion ...
planets orbit around Sun.
planets orbit around Sun.

... about its axis, we should fly off into space. Since we don't, the earth must be stationary. • It would be almost 1900 years before Galileo introduced the concepts of gravity and inertia that explain why these effects are not observed even though the earth does move. ...
How do we know how the Solar System is
How do we know how the Solar System is

... The time it takes for a planet to go around the Sun is related  to the size of its orbit; more distant planets take longer to  go around.                                                     (Period in  years)^2 = (semimajoraxis in a.u.)^3 ...
Planetary system dynamics Planetary system dynamics
Planetary system dynamics Planetary system dynamics

... ~100m sized asteroids into these unstable regions where they may be perturbed into Earth-crossing orbits Orbital distribution of KBOs: resonant (e.g., Pluto in 3:2 with Neptune), classical (low e,I, outer edge 47AU), scattered disc (high e, but perihelia near Neptune), detached (e.g., Sedna with per ...
THE STAR - physics.udel.edu
THE STAR - physics.udel.edu

... Cassiopeia is a constellation in the northern sky, named after the vain queen Cassiopeia in Greek mythology, who boasted about her unrivalled beauty. Cassiopeia was one of the 48 constellations listed by the 2nd-century Greek astronomer Ptolemy, and it remains one of the 88 modern constellations tod ...
Study regarding the landscape arrangement of the green space
Study regarding the landscape arrangement of the green space

... from a building, this shall be refurbished and improved, and shall be used for different organizations and manifestations: Organization of symposiums, (IAPPP Annual Symposium), it may be used for photometric observations on the satellites of Jupiter planet.,(Nicolae Donici astronomer symposium), and ...
Celestial Phenomena
Celestial Phenomena

... only crescent and new ...
Orbital Motion
Orbital Motion

... 2) A double star consists of two identical stars, each with a mass of 3.0 x 1030 kg. They are separated by 2.0 x 1011 m between their centres. How long do they take to complete one orbit? (p. 301) 3) A spacecraft has been put in orbit around an asteroid. The asteroid is a spherical rock of radius 15 ...
Universe and Solar System
Universe and Solar System

... Traveling to another planet would require very large amounts of money, planning, and time, and would not be at all easy to do because of the expense and complexity of the operation. ...
Lecture11 - UCSB Physics
Lecture11 - UCSB Physics

... • C) The gas in the nebular disk would have to be clumpy rather than smooth • D) The gas in the nebular disk would have to be mostly methane and ammonia rather than hydrogen and helium ...
Week 5 File
Week 5 File

... centre  of  the  slit  at  distance  D/2  away.  The  difference  in  the  path  length  of  the  two  rays  is  given     by  D/2  sinθ,  where  θ  is  the  angle  between  the  opFcal  axis  and  line  joining  the  point   ...
PHYS 1311: In Class Problems Chapter 5 Solutions Feb. 23, 2016
PHYS 1311: In Class Problems Chapter 5 Solutions Feb. 23, 2016

... estimate, the true center of mass of the Solar System is close to this result. What does this mean? The planets do NOT orbit about the center of the Sun. They orbit about the center of mass of the Solar System. Likewise, the Sun orbits about the Solar System center of mass, but with a period nearly ...
< 1 ... 295 296 297 298 299 300 301 302 303 ... 392 >

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.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report