• 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
Midterm Exam: Chs. 1-3, 7-11
Midterm Exam: Chs. 1-3, 7-11

... ____ 24. Which of the following is a necessary condition for lunar or solar eclipses? a. The Earth must be on the celestial equator. b. The Sun must be on the celestial equator. c. The Sun must be close to or crossing the ecliptic plane. d. The Moon must be close to or crossing the ecliptic plane. ...
For Chapter 16 on November 26, 2012
For Chapter 16 on November 26, 2012

... • The Kuiper Belt extends just beyond the orbit of Neptune and into the space of Eris. • Consists of comet and cometary material and other small objects – Trans Neptunian Objects • Many astronomers put the edge of the solar system to be at about 100 AU. • Voyager 1, launched in 1977, and in 2004 rea ...
ASTRO OTTER JUNIOR
ASTRO OTTER JUNIOR

... about the US vs. Soviet Space Race, Shuttle missions to the International Space Station, unmanned missions throughout the solar system, and information about ...
Early Astronomy
Early Astronomy

... Egyptian’s Observation of the Sun and Moon Motions. • Monitoring seasonal variation for agriculture Nile Flooded when sun rose near the star Sirius (the “Dog star”, in the Canis Major constellation; brightest star in the sky). • Link lunar and solar ‘birth’ and ‘death’ to religious festivals and an ...
june 2011 - Holt Planetarium
june 2011 - Holt Planetarium

... Zealand survey that scanned the center of the Milky Way galaxy, revealing evidence for up to 10 freefloating planets roughly the mass of Jupiter. The isolated orbs, also known as orphan planets, are difficult to spot, and had gone undetected until now. The newfound planets are located at an average ...
june 2011 - Holt Planetarium
june 2011 - Holt Planetarium

... Zealand survey that scanned the center of the Milky Way galaxy, revealing evidence for up to 10 freefloating planets roughly the mass of Jupiter. The isolated orbs, also known as orphan planets, are difficult to spot, and had gone undetected until now. The newfound planets are located at an average ...
PS 224: Astronomy Fall 2014 Midterm (October 16, 2014)
PS 224: Astronomy Fall 2014 Midterm (October 16, 2014)

... I would not believe this claim because this is a “very old” star with rare-earth elements. Such heavy elements are only produced in supernovae, so the earliest stars probably do not have those elements. So it is unlikely that a “very old” star has rare earth elements. To test this I would conduct sp ...
Name Class Date Our Solar System The solar system consists of our
Name Class Date Our Solar System The solar system consists of our

... (26%). Hot chemical reactions (known as thermonuclear reactions) inside the Sun release enormous amounts of energy, mostly as light and heat. These reactions occur when the hydrogen turns into helium. Earth’s Sun is an average-sized star. The Sun is more than a million times greater in volume than E ...
Astronomy Review HOW SCIENTISTS BELIEVE THE SOLAR
Astronomy Review HOW SCIENTISTS BELIEVE THE SOLAR

... •a stormy ball of mostly hydrogen and helium •the Great Red Spot is the most spectacular of Jupiter’s many constant high-pressure gas storms… winds up to 400 m/hr ...
Activity 12: Solar System
Activity 12: Solar System

... If you look up the word “solar” in your dictionary, you’ll find its basic definition reads something like: “of the sun,” or “relating to the sun.” System is defined as: “a set of things or parts forming a whole.” When you consider the meanings of these words, there is indication that the sun plays a ...
Lecture7
Lecture7

... •The formation of terrestrial planets around a star is thought to have occurred by what process? • A) Breakup of a large disk of matter which formed around the star • B) Condensation of gas from the original star nebula • C) Capture by the star of objects traversing the depths of space • D) Accretio ...
The Doppler effect
The Doppler effect

... he tuned in to an area in space that was giving off large amounts of radio waves – the bright radio objects. In our solar system the Sun is the brightest of all the radio objects, and Jupiter is the second brightest.  Radio astronomers wanted to identify their strong sources with objects they had s ...
Grade 9 Science Part 3 Other Celestial Bodies
Grade 9 Science Part 3 Other Celestial Bodies

... the direction of Hercules, Scorpius, Ophiuchus and Sagittarius. Thus we must be far away in one of the major arms • Mapped the milky way with radio waves to determine diameter and shape. • 100000 light years in diameter • Bulge at the center (looks like UFO from the side) • Two major spiral arms and ...
Planetary Motions - LathamWHS13-14
Planetary Motions - LathamWHS13-14

... In English, please…..  Planets travel in an ellipse with the Sun at one focus; the other is symmetrically located at the opposite end of the ellipse ...
Planetary Pretzels - Johns Hopkins University
Planetary Pretzels - Johns Hopkins University

... This is because Mars’s orbit is not concentric with the Sun. It’s slightly off center, and the closest possible approach to Earth comes when the Red Planet reaches perihelion, its closest point to the Sun, in late August when Earth is also close to the Mars−Sun perihelion line. Therefore, it’s neces ...
Exploring Mars - Sci-Port
Exploring Mars - Sci-Port

... Cyclones are storms of wind that encircle a center of low atmospheric pressure. If they occur north of our equator, they move in a counter-clockwise direction. If they are south, they move in a clockwise direction. In the Southern Hemisphere where there is less land and continental resistance, cyclo ...
Day-26
Day-26

...  It is very difficult to directly see a faint planet in the bright glow of its star.  A few dozen planets have been identified this way so far. ...
Science Overview
Science Overview

... Transiting Planets • ExoPlanet Task Force Report (draft) – Advice to NASA & NSF on exoplanet research • 5/10/15 year time horizons ...
J S U N I L   T U... 2011 “Chase Excellence- Success Will Follow” ll Follow”
J S U N I L T U... 2011 “Chase Excellence- Success Will Follow” ll Follow”

... because it is located above the axis of rotation of the Earth in the north direction. It appears to remain stationary at a point in the sky. 13. Why is the distance between stars expressed in light years? What do you understand by the statement that a star is eight light years away from the Earth? A ...
The Planets in the Solar System There are an uncountable number
The Planets in the Solar System There are an uncountable number

... There are an uncountable number of objects in our solar system. These objects range in size from huge stars to tiny particles of dust. Somewhere between the two extremes are planets. For example, Ida, Jupiter, and Mercury are all big enough to be seen from Earth, but should we classify all three of ...
File
File

... shapes to form 4. These cool forms combined to make the 4 SOLID inner planets ...
Extra-Solar Planets
Extra-Solar Planets

... Neptune. In the 1990’s, these satellites passed the orbit of Pluto, and both will eventually reach nearby stars (in ~ 25,000 years). ...
Earth, Moon, and Beyond
Earth, Moon, and Beyond

... Lunar eclipse- occurs when the moon, always a full moon, passes through the shadow of Earth. Earth blocks the sun’s light from reaching the moon, but the moon does not look black. Instead, it looks red. This is because the Earth’s atmosphere bends the red light, which then reflects off the moon. ...
Semester Review Answers - School District of La Crosse
Semester Review Answers - School District of La Crosse

... 22. A planet which has a magnetic field may imply what type of core?Molten metallic 23. The scientist who first choose to think of the solar system as heliocentric was: Aristarchus 24. Galileo was put under pressure from the church because: all the answers are correct 25. The point where all space a ...
Astronomy Notes
Astronomy Notes

... o One Tidal cycle per day=Two high tides and two low tides per day. o Separated by about 12:34 hours occurring 5.50 hours apart.  Neap tides occur when the Earth, Moon and Sun are at right angles. Two per month during first and last quarter moons.  Spring tides occur when the Earth, Moon and Sun a ...
< 1 ... 332 333 334 335 336 337 338 339 340 ... 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