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supplemental educational materials PDF
supplemental educational materials PDF

... A comet is, at its core, a dusty chunk of ice and rock ranging in size from a few kilometers to tens of kilometers across. The core is called the “nucleus” of the comet. When a comet gets closer to the Sun, the ice near its surface is heated, releasing gas and dust. This expelled gas and dust forms ...
Semester 2 Course Review
Semester 2 Course Review

... when constructing scientific explanations? How does the variety of evidence used to support the Big Bang Theory make it a more durable scientific theory? What patterns are observed in the organization and distribution of matter in the universe? What factors determine the organization and distributio ...
File
File

... moving away from Earth led to the theory of an expanding universe. This expansion implies that the universe was smaller, denser, and hotter in the past. In the 1940s, scientists predicted that heat (identified as cosmic microwave background radiation) left over from the Big Bang would fill the unive ...
Astronomy Today 7th Edition Chaisson/McMillan
Astronomy Today 7th Edition Chaisson/McMillan

... could be responsible for irregular moons. 8. Binary Kuiper belt objects (including the Pluto-Charon system) could have formed through collisions before ejection by interactions with the jovian planets. ...
Trading Cards
Trading Cards

...  Asteroids orbit our Sun, a star, in a region of space between the orbits of Mars and Jupiter known as the Asteroid Belt.  One day on asteroid Ida, for example, takes only 4.6 hours (the time it takes for this asteroid to rotate or spin once). Ida makes a complete orbit around the Sun (a year in t ...
PHYS101 Sec 001 Hour Exam No. 3 Preview 2 Page: 1 1 It
PHYS101 Sec 001 Hour Exam No. 3 Preview 2 Page: 1 1 It

... b. small because they are not very bright. c. small because they do not last very long before they turn into stars. d. large because they are much brighter than ordinary stars. 45 Far from the Sun, a comet is basically a a. dirty lump of frozen gas and ice. b. cloud of individual dust particles. c. ...
Document
Document

... • Many complex molecules have been observed, including progenitors of the basic amino acids required to build life • These complex molecules can only survive in space when they are shielded by dense, dark, giant clouds containing dust • These giant clouds are interesting structures that provide the ...
Kuiper Belt
Kuiper Belt

... – Dwarf planets are essentially very large asteroids – also a term we’ll get to – but don’t quite meet the requirements of being a planet. • Reminder: Planets need to be rounded by gravity, orbiting the Sun, and clear of any massive neighbors in their orbit ...
Reconnaissance of the TRAPPIST-1 exoplanet system in the Lyman
Reconnaissance of the TRAPPIST-1 exoplanet system in the Lyman

... nearby ultracool dwarf star. We performed a four-orbit reconnaissance with the Space Telescope Imaging Spectrograph onboard the Hubble Space Telescope to study the stellar emission at Lyman-α, to assess the presence of hydrogen exospheres around the two inner planets, and to determine their UV irrad ...
Solar system formation by accretion has no observational evidence
Solar system formation by accretion has no observational evidence

... which the small particle component is kept alive through collisions driven by turbulence which frustrates growth to planetesimals until conditions are more favorable for one or more reasons.”17 This ‘extended phase’ has been detected neither empirically nor in theoretical modeling. Neither support t ...
Lecture 30 Solar System Formation and Early Evolution
Lecture 30 Solar System Formation and Early Evolution

... The composition and density of solid materials at any radius from the sun will reflect the P-T path the material took as the solar nebula cooled. Those compositions should be broadly true in what’s left today, the planets, which accumulated from dust sized particles that form, collide, and accrete.. ...
Grade 5 ELA Life on a New Planet
Grade 5 ELA Life on a New Planet

... The universe is larger than we can imagine. It is hard to comprehend that our Sun is one of over 100 billion stars within our own galaxy, the Milky Way. What is even harder is thinking about the fact that in our universe, the Milky Way, is one of over 100 billion galaxies! Ever since mankind discove ...
userfiles/602xxh/files/2013%e5%b1%8a%e9%ab%98%e4%b8%89
userfiles/602xxh/files/2013%e5%b1%8a%e9%ab%98%e4%b8%89

... The five planets that the scientists are most certain about are large—up to 25 times the size of Earth. According to Christophe Lovis, one of the scientists behind the finding, these five planets are similar to Neptune(海王星). “They’re made mainly of rocks and ice,” he said. “They’re probably not suit ...
15-12-20 A Star is Born – PDF - Unitarian Universalist Church of
15-12-20 A Star is Born – PDF - Unitarian Universalist Church of

... denser the stars, the hotter the temperature. This process occurred in countless places, simultaneously throughout space. Stars emerged and clustered into gravitational regions on days 2 through 8. This was the birth of all the galaxies. It was so hot and so pressurized in the belly of stars that hy ...
the moons of jovian planets.
the moons of jovian planets.

... d) comets that were trapped by Jupiter’s gravitational field. Explanation: Asteroids, meteoroids, and comets may have not changed at all since the solar system formed. ...
In the icy near-vacuum of interstellar space are seething
In the icy near-vacuum of interstellar space are seething

... there are huge, cloudlike collections of dust and gas swirling through the interstellar regions of a galaxy; they discovered these clouds as a result of the reddening effect that dust (as well as radial velocity—see "One Universe, Indivisible" in this Mosaic) has on starlight: the more dust there is ...
Exploring Space—The Universe: The Vast
Exploring Space—The Universe: The Vast

... 1. Before viewing the video, ask students what interests them most about the universe. Is it the enormous distances? The idea of planets and galaxies far different than our own? Do they believe that there is life in other parts of the universe? Do they believe that our country and other nations shou ...
Debris Belts around Vega - Astronomical Society of the Pacific
Debris Belts around Vega - Astronomical Society of the Pacific

... system also has four giant planets orbiting between the rocky asteroid belt and the icy Kuiper belt. • No planets have yet been detected around Vega, but if the star were eventually found to have several giant planets in orbit, this may suggest a common model for how stars form planets and how thei ...
The role of Jupiter in driving Earth`s orbital evolution: An update
The role of Jupiter in driving Earth`s orbital evolution: An update

... Fig. 2: The stability of the Solar system as a function of the initial semi-major axis, a, and eccentricity, e, of Jupiter’s orbit. In these integrations, the initial orbits of the other planets were held at their DE431 ephemeris values, and their evolution was followed for 10 Myr under the influen ...
Kohoutek Is Coming - Institute of Current World Affairs
Kohoutek Is Coming - Institute of Current World Affairs

... so He might awaken us out of our security us not make ourselves secure by saying or thinking that the Lord by such fearful Sights speaks to others onely and not unto Us. As Vespasian, the Emperor, when there was a long hairy Comet seen, he did but deride at it and make a Joke of it,saying that it co ...
Observing Nebulosities: The Cygnus Superbubble Chris
Observing Nebulosities: The Cygnus Superbubble Chris

... of expanding interstellar matter are still not well understood. Since, within the Milky Way, Cygnus is located along the local Orion spur, star-forming structures at different distances are possibly located along the line of sight. Indeed, recent X-ray emission findings (Uyaniker et al. 2001) sugges ...
Slide 1
Slide 1

... There are three reasons why the Moon has more craters than the Earth… 1. The Moon has no air. This means there’s no friction to burn up the smaller meteors – every meteor hits the ground on the Moon! 2. The Moon has no sea. About 70% of the Earth’s surface is covered by water. Any meteorites landing ...


... CAIs are thought to be the first solid objects formed when the Solar System formed. Analysis of CAIs indicates that the ratio of aluminum-26 to the common, nonradioactive aluminum-27 was about 0.00005 when the objects formed. However, a few CAIs have much lower ratios, so low that they may not have ...
Comets
Comets

... that life to new environments. Such a theory would suggest that life, if it exists elsewhere in the solar system, would be identical to ours, because they came from the same source. ...
Semester 2 Course Review
Semester 2 Course Review

... when constructing scientific explanations? How does the variety of evidence used to support the Big Bang Theory make it a more durable scientific theory? What patterns are observed in the organization and distribution of matter in the universe? What factors determine the organization and distributio ...
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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.
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