• 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
PPT Format of Slides
PPT Format of Slides

... 6.7 How Did the Solar System Form? Nebular contraction is followed by condensation around dust grains, known to exist in interstellar clouds such as the one shown here. Accretion then leads to larger and larger clumps; finally gravitational attraction takes over and planets form. © 2011 Pearson Edu ...
Collisions with Comets and Asteroids
Collisions with Comets and Asteroids

... deal of matter was thrown outward, beyond the orbits of Uranus and Neptune. Coalescing far from the sun, the comets were born cold, at temperatures as low as Ð260 degrees Celsius. They retained their volatile materials, the gas, ice and snow. Sometimes called dirty snowballs, these objects are usual ...
Chapter 6 The Solar System
Chapter 6 The Solar System

... 6.7 How Did the Solar System Form? Nebular contraction is followed by condensation around dust grains, known to exist in interstellar clouds such as the one shown here. Accretion then leads to larger and larger clumps; finally gravitational attraction takes over and planets form. © 2011 Pearson Edu ...
24_Testbank - Lick Observatory
24_Testbank - Lick Observatory

... cloud through gravitational encounters. This is good news because it means that life on the inner planets can evolve without sterilizing giant impacts. The bad news is that if a star does not blow away its surrounding disk of gas and dust soon enough, giant planets may experience drag and migrate in ...
Chapter 18 - Astronomy
Chapter 18 - Astronomy

... • Cold gas clouds can be observed using the hydrogen 21centimeter line • Molecular clouds can be observed by the radiation from molecular rotational transitions ...
Comets - LEAPShares
Comets - LEAPShares

... asteroids and meteoroids—pieces of interplanetary rock and metal comets—objects containing large amounts of ice and rocky debris space debris that falls through Earth’s atmosphere the asteroid belt and the Kuiper belt, both filled with a variety of debris, including orbiting pairs of objects the imp ...
J: Chapter 3: The Solar System
J: Chapter 3: The Solar System

... Figures 3A through 3D, which illustrate how this might have happened. A cloud of material in this nebula was rotating slowly in space. A nearby star might have exploded, and the shock waves from this event could have caused the cloud to start contracting. As it contracted, the matter in the cloud wa ...
Cosmic Influence on the Sun-Earth Environment
Cosmic Influence on the Sun-Earth Environment

... environment of the Earth and the Universe [1, 2, 3, 4, and 5]. We are continuously collecting data for different environmental parameters. Sudden heat or cold waves, tornados, erratic rainfall and snowfall are being observed and their forewarning has been attempted. Efforts have been made to underst ...
Exoplanet Discoveries and the Fermi Paradox
Exoplanet Discoveries and the Fermi Paradox

... There are far more class M stars than others, but their continuously habitable zones may be zero width, because the location changes by more than its width as the star heats up. Even if there is a CHZ, it is so close to the star that planets would have tidally locked rotations. This situation is ske ...
AN APPROACH TO THE LEMNISCATEPATH OF
AN APPROACH TO THE LEMNISCATEPATH OF

... At  the outset  it  seemed evident  that a careful distinction  must be made between “Maya”  and  “Truth”.  Whatever lemniscate approach we adopt we must be able to “save the appearances”, and those appearances  are the point of view of Maya.  As a beginning we will attempt to save two essential app ...
Assessing the Possibility of Biological Complexity on Other
Assessing the Possibility of Biological Complexity on Other

... and in deep space [8]. Water is among the most common molecules in the universe, and a host of other liquids can exist at planetary temperatures [9]. Besides an abundance of light and heat in all stellar systems, many other forms of energy are locally available on probably most planetary bodies [10– ...
PDF Full-text
PDF Full-text

... and in deep space [8]. Water is among the most common molecules in the universe, and a host of other liquids can exist at planetary temperatures [9]. Besides an abundance of light and heat in all stellar systems, many other forms of energy are locally available on probably most planetary bodies [10– ...
- Schwab`s Writings
- Schwab`s Writings

... the fact that, for each type of particle, there exists a type of “anti-particle” with an equal amount but opposite kind of energy, such that a combination of the two would neutralize or annihilate both. The newly created universe appears to have produced an asymmetrical amount of those two types, al ...
Planets of Our, and Other, Solar Systems
Planets of Our, and Other, Solar Systems

... region, with hundreds of new stars still forming • Inside the Orion Nebula, we see new solar systems forming! • We see proto-planetary dusty disks surrounding many newly forming stars • The neighboring stars compete gravitationally for infalling material, so it can’t fall STRAIGHT in, and hence you ...
Discovering Science through Inquiry: The Solar System
Discovering Science through Inquiry: The Solar System

... Background Information for the Teacher Earth is the most unique planet in the solar system for at least two very important reasons. First, it is the only known planet in the universe that supports life. Secondly, it is also the only known planet that has an abundance of water, which is essential for ...
Our solar system
Our solar system

... • Major planets orbit Sun in same sense, and all but Venus rotate in that sense as well. • Planetary orbits lie almost in the same plane. ...
Artificial comets
Artificial comets

... „When they had heard the king, they departed; and, lo, the star, which they saw in the east, went before them, till it came and stood over where the young child was. (Matthew 2:9)”. Despite what the Christmas lights might make us believe, the “Star of Bethlehem” probably was not a comet. Comets are ...
Primordial Planet Formation - University of California San Diego
Primordial Planet Formation - University of California San Diego

... sections
for
collisions
with
implications
for
changes
in
their
collisional
dynamics,
 increasing
diffusion
of
the
PGC
planet
clouds
from
the
galaxy
central
core
to
form
 the
galaxy
dark
matter
halo.

With
suddenly
smaller
atmospheres
there
would
be
 fewer
planet
collisions
and
Ofek
et
al.
(2010)
eve ...
Educator`s Guide to the Cullman Hall of the Universe, Heilbrunn
Educator`s Guide to the Cullman Hall of the Universe, Heilbrunn

... of gravity and electromagnetism. At the same time, galaxies are colliding: smaller galaxies and surrounding gas merged to form the Milky Way, which is now on a collision course with the Andromeda Galaxy. All stars (including our Sun) are born, shine until they run out of fuel, and die. The most mass ...
project.generative.interactive.music
project.generative.interactive.music

... and rising along the monstrous columns of the nebula, and crossing the trajectories of horizontally flying UFOs. First I planned the piece as an impromptu for solo piano, but finally the whole composition was realised for three pianos and 8 hands! ...
The Interstellar Medium
The Interstellar Medium

... an emission nebula, but is enough to give sufficient scattering to make the dust visible. Thus, the spectrum shown by reflection nebulae is similar to that of the illuminating stars, but bluer due to the efficiency with which blue light is scattered. ...
Comets, vagrants of the universe
Comets, vagrants of the universe

... Comets travel in elliptical orbits elongated and in a different plane of the Solar System. They move at high speed, increasing as they approach the Sun, because the gravity that attracts them is greater; they move more slowly in its remote orbit. Comets can be classified by time in describing its or ...
Solar System Formation Reading
Solar System Formation Reading

... solar system. In the early phases of the solar system a much higher flux of comets than the present rate probably brought volatile ices and gases into the inner solar system - collisions of these icy bodies with the terrestrial planets could been the main source of the terrestrial planet atmospheres ...
ref evlution of stars
ref evlution of stars

... So a combination of different methods is used to produce photos which give us the most information in a digestible form. ...
Physics Today
Physics Today

... as that in ocean water. Because D/H ratios found in the universe vary considerably, the ocean's isotopic composition of hydrogen, along with the isotopic compositions of a large number of nonradiogenic elements in the Earth, strongly supports the meteorite mixture model for the chemical composition ...
< 1 ... 11 12 13 14 15 16 17 18 19 ... 75 >

Panspermia



Panspermia (from Greek πᾶν (pan), meaning ""all"", and σπέρμα (sperma), meaning ""seed"") is the hypothesis that life exists throughout the Universe, distributed by meteoroids, asteroids, comets, planetoids and, also, by spacecraft in the form of unintended contamination by microorganisms.Panspermia is a hypothesis proposing that microscopic life forms that can survive the effects of space, such as extremophiles, become trapped in debris that is ejected into space after collisions between planets and small Solar System bodies that harbor life. Some organisms may travel dormant for an extended amount of time before colliding randomly with other planets or intermingling with protoplanetary disks. If met with ideal conditions on a new planet's surfaces, the organisms become active and the process of evolution begins. Panspermia is not meant to address how life began, just the method that may cause its distribution in the Universe.Pseudo-panspermia (sometimes called ""soft panspermia"" or ""molecular panspermia"") argues that the pre-biotic organic building blocks of life originated in space and were incorporated in the solar nebula from which the planets condensed and were further —and continuously— distributed to planetary surfaces where life then emerged (abiogenesis). From the early 1970s it was becoming evident that interstellar dust consisted of a large component of organic molecules. Interstellar molecules are formed by chemical reactions within very sparse interstellar or circumstellar clouds of dust and gas. The dust plays a critical role of shielding the molecules from the ionizing effect of ultraviolet radiation emitted by stars.Several simulations in laboratories and in low Earth orbit suggest that ejection, entry and impact is survivable for some simple organisms.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report