• 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
File
File

... (spins) on an axis. The inner planets of Mercury, Venus, Earth, and Mars are mostly solid with minerals similar to those on Earth. The outer planets of Jupiter, Saturn, Uranus, and Neptune are gaseous masses with rocky cores surrounded ...
Slide 1
Slide 1

... BECAUSE OF THE HEAT GENERATED IN THE FORMATION OF THE EARTH AND THE PRESENCE OF RADIOACTIVE ELEMENTS. 5) THE COLLISION WITH A MARS SIZED BODY GAVE EARTH A LARGE MOON. 6) THE MOON STABILIZES EARTH AND KEEPS IT FROM WOBBLING ON ITS AXIS. THIS GIVES EARTH REGULAR SEASONS. 7) ABOUT 2 BILLION YEARS AGO, ...
Kepler`s Laws wkst
Kepler`s Laws wkst

... 8. V404 Cygni is a dark object orbited by a star in the constellation Cygnus. Many astronomers believe the object is a black hole. Suppose the star’s orbit has a mean radius of 2.30  1010 m and a period of 6.47 days. What is the mass of the black hole? How many times larger is the mass of the black ...
Early Astronomers
Early Astronomers

... the evolution of our space model ...
Planets and Stars Differences and Similarities
Planets and Stars Differences and Similarities

... Planets the Solar System’s Best Friend In our Solar System there are 8 planets Mercury. Venus, Earth, Mars, Jupiter, Uranus, and Neptune. Theses planets in some ways are very similar to the stars but in other way they might be more different then you might think. In our solar system we have planets ...
Scale of Terrain on Mars
Scale of Terrain on Mars

... • These elements are abundant in the Universe, except in older star systems • As long as condensation and accretion occur during a star system’s formation, we can expect these elements to be present • Organic molecules (building blocks for amino acids) have been found in asteroids and comets ...
doc - UWM
doc - UWM

... rotate. Because it takes about the same amount of time to rotate as it does to revolve around the Earth, we always see the same side. The side we don’t see is known as “the far side of the Moon.” Pluto is the ninth planet. FALSE. There are only eight planets. Since 1992, we have discovered hundreds ...
Our solar system - astronomyuniverse
Our solar system - astronomyuniverse

... Earth formed, only rocky material could stand the great heat. Icy matter settled in the outer region of the disk along with rocky material, where the giant planets like Jupiter formed. As the cloud fell in, the center got so hot that it became a star, the Sun, and blew most of the gas and dust of th ...
Planet found in nearest star system to Earth » Astronautical News
Planet found in nearest star system to Earth » Astronautical News

... Alpha Centauri is one of the brightest stars in the southern skies and is the nearest stellar system to our Solar System — only 4.3 light-years away. It is actually a triple star — a system consisting of two stars similar to the Sun orbiting close to each other, designated Alpha Centauri A and B, an ...
PowerPoint-presentatie
PowerPoint-presentatie

... A shooting star is a common name for the visible path of a meteorite as it starts to burn when it enters the atmosphere. Question 3 (GG 55) A star/ sun is a ball of burning gas in the middle of a solar system. A sun sends out light and heat. Planets orbit a sun. They don’t send out light, but the ge ...
Contents Mercury, page 2 Venus, page 3 Earth
Contents Mercury, page 2 Venus, page 3 Earth

... fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's four terrestrial planets. It is sometimes referred to as the world, the Blue Planet, or by its Latin name, Terra. Earth formed approximately 4.54 billion years ago by accretion from the solar nebula, ...
Space Test: Practice Questions and Answers 1. Who discovered
Space Test: Practice Questions and Answers 1. Who discovered

... The  Steady  State  Theory  believed  that  the  universe  doesn’t  change  with  time.   However,  more  matter  is  added  as  it  expands.  It  also  stated  that  the  universe   had  not  beginning  or  end.  In  Big  Bang  the ...
Nicolaus Copernicus Describes What Is Seen in
Nicolaus Copernicus Describes What Is Seen in

... motion but that the earth rotates from west to east, upon earnest consideration you will find that this is the actual situation concerning the apparent rising and setting of the sun, moon, stars, and planets. . . Accordingly, since nothing prevents the earth from moving, I suggest that we should now ...
Studying Planets in the Solar System
Studying Planets in the Solar System

... 6. Give the groups time to research and gather data about their planet. Remind them to address the ten questions selected by the class. 7. After their research is complete, have the groups create a presentation to share their planetary information with the class. Presentations may be in the form of ...
Geologic Time and Origins of the Earth
Geologic Time and Origins of the Earth

... • Accretion acts over an extended area (the disk) and for a extended period of time • Solid grains condense out of the nebula’s gas – This is a chemistry process ...
Atmosphere of Venus, Mars and Earth (PDF: 1.7MB)
Atmosphere of Venus, Mars and Earth (PDF: 1.7MB)

... Increase in oxygen Increase in oxygen • In In the sea, chlorophyta produced oxygen by  the sea chlorophyta produced oxygen by photosynthesis and oxygen amount increased to be  1/100 of the present Then multicellular organism 1/100 of the present.   Then, multicellular organism  appeared on the Eart ...
The night sky - Mr. Champion
The night sky - Mr. Champion

... • Even before the advent of telescopes, humans took note of star formations and have been influenced by them. • As we often do, some claimed through patterns they could see objects or people “hidden” there. • These objects are what’s known as constellations. • They aren’t necessarily found in the sa ...
Astronomy Assignment #5: Newton`s Universal Law of Gravitation
Astronomy Assignment #5: Newton`s Universal Law of Gravitation

... If the Earth was 3 A.U. from the Sun (instead of 1 A.U.), would the gravity force between the Earth and the Sun be less or more than it is now? By how many times? If Mercury was 0.2 A.U. from the Sun (instead of 0.4 A.U.), would the gravity force between Mercury and the Sun be less or more than it i ...
Integrative Studies 410 Our Place in the Universe
Integrative Studies 410 Our Place in the Universe

... How heavy is the Earth? ...
NIE10x301Sponsor Thank You (Page 1)
NIE10x301Sponsor Thank You (Page 1)

... discoveries of moons orbiting the planet Jupiter, and of the phases of Venus provided evidence for the sun-centered model. He also found that there were far more stars than was previously believed. Copernicus’ model gained acceptance, and with it came the awareness that, while the Sun may be the cen ...
EarthScience1stNineWeeks
EarthScience1stNineWeeks

... 15. If you measured one inch on a map, what would the distance be on the Earth’s surface for each of the following scales (notes and 6, p.168): a) 1:24000 16. Given two points on a map, what is the procedure to determine their actual distance apart on land? (notes, map activities) 17. If a rectangul ...
From the Everett and Seattle Astronomical
From the Everett and Seattle Astronomical

... around once. Scientists have coined the term “hot Jupiters” to describe these gas giants orbiting so close to their suns. But the newfound planet around 55 Cancri does not exhibit the peculiarities of other extrasolar planets. Lying at around 5.5 astronomical units – compared to Jupiter’s 5.2 astron ...
PDF
PDF

... much closer to their parent star than is the case in the Solar System, and proposed Doppler spectroscopy and the transit method to detect super-Jupiters in short orbits. Four decades later, on 9 January 1992, the first confirmed detection of an exoplanet came with the discovery of several terrestria ...
Galileo and Newton
Galileo and Newton

... The Ptolemaic (a) and Copernican (b) systems both assumed that all orbits are circular. The fundamental difference is that Copernicus placed the Sun at the center. ...
Astronomy word grid
Astronomy word grid

... 7. The plane of our galaxy visible as a pale band of stars 12. The shape of a planet’s orbit 14. Name given to the line between day and night on the Moon 17. The brightest star in the northern sky 18. The apparent backwards movement of the planets in the sky 22. A type of variable star used to measu ...
< 1 ... 334 335 336 337 338 339 340 341 342 ... 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 © 2025
  • DMCA
  • Privacy
  • Terms
  • Report