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4550-15Lecture35
4550-15Lecture35

... significant variation in temperature in space and/or time in the nebula. Other variations relate to oxygen fugacity. Since H2 is the principal reductant and it dominates the gas, while O constitutes a significant fraction of condensed matter, variation in oxygen fugacity most likely reflects variati ...
pals_20160211_howpla.. - Department of Physics and Astronomy
pals_20160211_howpla.. - Department of Physics and Astronomy

... Temperature drives planet formation - I Temperature: dictates how fast gas molecules move, likelihood of escape from a planet’s gravity Temperature: energy per sq. meter on a planet depends on amount of sunlight received (proportional to 1/d2) Temperature: determines which molecules stay, which go ...
Observation & Inference - East Hanover Schools Online
Observation & Inference - East Hanover Schools Online

... Which planets are the terrestrial planets and which planets are the gas planets? What are three of their primary differences? The terrestrial planets are made of rock, smaller, closer together, do not have rings, and are closer to the sun. ...
Outer Space - The Reading Connection
Outer Space - The Reading Connection

... This craft requires quite a bit of prep, but it's not difficult to put together and makes an awesome take-away from the Read-Aloud. Use paper plates, yarn, and pre-cut paper circles (nine per kid, of various sizes -- these will represents the 8 planets and the sun) to make a hanging mobile model of ...
ppt
ppt

... Each is a multiple planet system required for habitability (contains Neptune or Jupiter size companions) Just right orbits (near circular, coplanar) A planet with the right distance from the host star (stellar habitable zone) ...
PLANETS OF THE DOUBLE SUN - Space Frontier Foundation
PLANETS OF THE DOUBLE SUN - Space Frontier Foundation

... companion star being too far away to affect their orbits gravitationally. (The Alpha Centauri system falls within this latter category for planets orbiting out to about the distance of Jupiter.) Double-star systems where the two stars are separated from each other by about the same distance as Earth ...
Homework 4 1 Chapter 3 October 4, 2011
Homework 4 1 Chapter 3 October 4, 2011

... the planets - they just did not grow large enough to be planets. The asteroids are concentrated in the asteroid belt because Jupiter’s orbit ensures that the asteroids there are least likely to collide with other planets. Objects in the Kuiper belt are there because that is probably where they forme ...
The Solar System (Ch. 6 in text) The solar system consists of the Sun
The Solar System (Ch. 6 in text) The solar system consists of the Sun

... B. Astrometric method—search for periodic motions of the star in the plane of the sky, detecting the “wobble” directly. Size of the angular variation depends of the mass of the invisible planet. Works best for massive planets far from star (so center of mass is located further from center of star, s ...
AST301.Ch6.15.SolarSystems - University of Texas Astronomy
AST301.Ch6.15.SolarSystems - University of Texas Astronomy

... B. Astrometric method—search for periodic motions of the star in the plane of the sky, detecting the “wobble” directly. Size of the angular variation depends of the mass of the invisible planet. Works best for massive planets far from star (so center of mass is located further from center of star, s ...
search for extrasolar planets
search for extrasolar planets

... nearby terrestrial worlds. ...
The Solar System (Ch. 6 in text) Consists of the sun (a typical star
The Solar System (Ch. 6 in text) Consists of the sun (a typical star

... “accumulation” of planetesimals into planets (note that this is sometimes called “accretion” in your text). Either get terrestrial-like planets (if close to the star, where it’s too warm for “volatiles” to be solid or liquid) or Jovian-type planets (further from star, where cooler, so “accretion” of ...
PPT - El Camino College
PPT - El Camino College

... – Collisions can destroy small planetesimals. – What’s left at the end? – What’s the temperature like near the Sun? • Gases won’t stay on the planets ...
Stream: sciences. E THIRD TERM ENGLISH EXAMINATION PART
Stream: sciences. E THIRD TERM ENGLISH EXAMINATION PART

... Venus, Earth, Mars, Jupiter, Uranus, Neptune and Pluto. It includes also the satellites of the planets; numerous comets, asteroids, and meteoroids. The moon is the satellite rotating around the earth and the closest body to it. The Sun is the richest source of electromagnetic energy ( mostly in the ...
the interstellar medium - Howard University Physics and Astronomy
the interstellar medium - Howard University Physics and Astronomy

... atmosphere; it probably consisted mostly of nitrogen (N2) and carbon dioxide (CO2) with lesser amounts of reduced gases such as carbon monoxide (CO), methane (CH4), ammonia (NH3) and hydrogen sulfide (H2S). • Water (H2O), currently mostly liquid in Earth’s oceans, has about 300 times the mass of Ear ...
WhatsInSolarSystem - School
WhatsInSolarSystem - School

... According to the International Astronomical Union a planet is an object which: 1. Is in orbit around the Sun 2. Has a mass big enough so that its gravity pulls it into a nearly round shape 3. Has "cleared the neighbourhood" around its orbit. Dwarf Planets As telescopes and techniques have improved a ...
24. Life Beyond Earth: Prospects for Microbes, Civilizations, and
24. Life Beyond Earth: Prospects for Microbes, Civilizations, and

... • Have we discovered habitable planets around other stars? • No, our current technology is not quite up to the task. However, upcoming missions should soon tell us whether terrestrial planets exist within the habitable zones of nearby stars, and missions a decade or two away may tell us whether thes ...
Document
Document

... by Barbara Brown for ASTR 402 Spring, 2006 ...
Chpt4b
Chpt4b

... gasses escape from the nucleus caring dust with it. Comets shine by reflected solar light Finally comets are divided into two large classes of short-term and long term ...
The mystery of cosmic oceans and dunes Earth
The mystery of cosmic oceans and dunes Earth

... Earth-like planets are more likely to orbit Sun-like stars rather than lower-mass stars Tokyo, February 17, 2015: Simulations by researchers at Tokyo Institute of Technology and Tsinghua University indicate that Earth-like planets are more likely to be found orbiting Sun-like stars rather than lower ...
PowerPoint Presentation - Small Bodies in the Solar System
PowerPoint Presentation - Small Bodies in the Solar System

... > 200 asteroids larger than 60 miles (100 kilometers) in diameter. > 750,000 asteroids larger than three-fifths of a mile (1 km) in diameter and millions of smaller ones. ...
Objects In Space -- research questions
Objects In Space -- research questions

... You’ll work closely with “Outer Planets” and the “Sun” to create a close to scale version of our solar system. Pay close attention to the sizes of your planets compared to each other, the outer planets and the sun. Answer the following questions: 1. What are the names of the 4 inner planets, in orde ...
Comets
Comets

... made up of a nucleus and a coma. The nucleus is the solid core of a comet. The coma is a fuzzy outer layer made up of clouds of gas and dust. • A small glowing nucleus with a diameter of only a few kilometers can sometimes be detected within a coma. As comets approach the sun, some, but not all, dev ...
Methods Of Discovering Extra solar Planets.
Methods Of Discovering Extra solar Planets.

... • This method goes hand in hand with the astrometry. • Once they find out the stars movement, then they look for if the star is moving in real life. • The affects of the planet will be small yet it will be detectable. Of course large planets will be doing this affect. • The downside to this is that ...
Stellar Formation 1) Solar Wind/Sunspots 2) Interstellar Medium 3) Protostars
Stellar Formation 1) Solar Wind/Sunspots 2) Interstellar Medium 3) Protostars

... In dense molecular clouds gravity eventually wins ...
"It`s increasingly seeming that the solar system is
"It`s increasingly seeming that the solar system is

... The multitude of planetary systems seems to be yet another fact of our cosmic inconsequence, in which our corner of the universe is just like any other. But while planetary systems abound, astronomers are finding that in some respects, the solar system stands out. "It's increasingly seeming that the ...
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Directed panspermia

Directed panspermia concerns the deliberate transport of microorganisms in space to be used as introduced species on lifeless planets. Directed panspermia may have been sent to Earth to start life here, or may be sent from Earth to seed exoplanets with life.Historically, Shklovskii and Sagan (1966) and Crick and Orgel (1973) hypothesized that life on Earth may have been seeded deliberately by other civilizations. Conversely, Mautner and Matloff (1979) and Mautner (1995, 1997) proposed that we ourselves should seed new planetary systems, protoplanetary discs or star-forming clouds with microorganisms, to secure and expand our organic gene/protein life-form. To avoid interference with local life, the targets may be young planetary systems where local life is unlikely. Directed panspermia can be motivated by biotic ethics that value the basic patterns of organic gene/protein life with its unique complexity and unity, and its drive for self-propagation.Belonging to life then implies panbiotic ethics with a purpose to propagate and expand life in space. Directed panspermia for this purpose is becoming possible due to developments in solar sails, precise astrometry, the discovery of extrasolar planets, extremophiles and microbial genetic engineering. Cosmological projections suggests that life in space can then have an immense future.
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