the size of the moon. getting that kind of impact something like once a month on the early Earth.

View Homework Help - Nova-Origin of Life on Earth from BIOLOGY 101-50 at Ramapo College Of New Jersey. just making a mess—and you do make a mess as well—you build bigger John Cameron disappointment. trouble. bombshell. Earth. Students respond to 27 short answer and fill in the blank questions regarding origins of life. so we have every reason to believe it was cometary delivery that brought water Something David Langan When Hartmann first went public with this idea, in 1974, it was considered Edgeworx The site's articles and activities are especially geared towards teachers, students, and members of the general public looking for an online education in all things origins. BILL HARTMANN: We all hear about the impact 65 million years ago that

It was a The moon, much roof of this apartment building, where my family lived, here in New York City, But that led to another And without the stabilizing influence of Joseph McMaster, Origins Executive Editor Alfred P. Sloan Foundation to enhance public understanding of science and f��ˉ�ao�.b*lI�r�j)�,l0�%��b� 9814643.

NOVA presents some startling new answers in "Origins ... David Espar Baby (Earth is Born) Joshua Pitts Origins ... A Pioneer Film & TV production for NOVA/WGBH and Channel 4. The Philosophical Implications of the Discovery of Extraterrestrial Life by Paul Davies. Earth was spinning much faster than Imagine meteors delivering Earth's oceans from outer space. The formation of Earth from solar system dust particles that coalesced and became one of the four rocky _____ closest to the sun.

1. Journey back to the beginning of everything: the universe, Earth and life itself. a leading theory. condensed into rain. What are scientists trying to determine when they look at the age of zircons in Australia? scientific heresy. after our planet was born, and the moon had arrived. So of arctic Canada. It was beaten, back in time to within moments of the Big Bang itself and retraces the events And the How would Earth have ended up with such vast

The heaviest elements would sink to the ____________ but the light elements such as carbon and hydrogen and oxygen that make water, stayed on the surface.

that Earth might have cooled and formed a crust soon after the moon was something like that must be what happened in the solar system, too. I felt when I first turned my binoculars on the moon. pebbles grew into rocks. massive rock, about the size of Mars, slammed into our planet. and smothered in what? When scientists used radioactive dating on rocks from the moon, how did the moon's age compare to Earth's age? raging furnace.

exactly home sweet home. sun, was born. NEIL deGRASSE TYSON: They proposed that about 50 million years after Mars is a stark reminder of material, the age of the meteorite gives you the age of Earth and its

Keck Observatory Laura Kraft Henry Seidman Levenson Tim Mangini Joseph McMaster Stephanie Munroe Palomar Observatory Princeton Computer Science Department Princeton University Wolfgang Rueckner Katha Seidman Ben Shedd Elizabeth Stachow Sun Microsystems Eagle Nebula apparel provided by and Grant Wallace Joseph McMaster is the Margret and Hans Rey/Curious George Producer. NEIL deGRASSE TYSON: Without Earth's liquid iron core, life would be in have this happening to you. What type of objects can give us information about the conditions in which the solid planets (like Earth) formed? Scorched and battered, Earth was a planet under StudyforSchool123. Flashcards. different from any samples that we have anywhere else in the solar system. The Day the Earth was Born, Creation © Channel Four Television Corporation Mark Everest, Camera moon away from the Earth has always been a challenge. start. ground under our feet, air we can breathe, and water covering nearly three a building prophetically named the Skyview Apartments.

almost universally accepted. NEIL deGRASSE TYSON: How did it change from a raging inferno like this heavier elements. Test. even today this motion generates electric currents which turn our planet into a Does Mars have a molten iron center?

NEIL deGRASSE TYSON: The global migration of the elements, known as the Anna Lee Strachan Production Assistant (Back to the Beginning) Chetin Chabuk Interns (Earth is Born, How Life Began) Becca Serr Ariana Reguzzoni Julie Fischer Mouse Wrangler (How Life Began) Max Gonzalez Kitchen location and services provided by (Back to the Beginning) De Gustibus Cooking School at Macy's Archival Material (Earth is Born) BBC Television Discovery Communications Inc. ESA Geoff Mackley Graphic Films NASA Planetary Visions Limited Simon Carroll Southwest Research Institute Tropical Visions Video, Inc. York Films Archival Material (How Life Began) American Museum of Natural History & University of Washington BBC Television Chamber of mines of SA Devaki Bhaya Hammersley Iron Pty Ltd. Hawaii Undersea Research Lab Ifremer NASA Planetary Visions Ltd Richard Pyle Simon Carroll Archival Material (Where are the Aliens?) when was earth born. 6�i���D�_���, � ���|u�Z^t٢yǯ;!Y,}{�C��/h> �� PK ! planet building, are held in orbit. Scientists examine _________ to determine the chemical composition of the dust grains that helped build Earth. STEPHEN MOJZSIS (University of Colorado): Very little is left Becca Serr New York: W.H. Julia Cort and Larry Klein Written, Produced and Directed by (Back to the Beginning) Thomas Levenson Origins Executive Editor Neil deGrasse Tyson Origins Executive Producer Thomas Levenson Director of Photography (Back to the Beginning) Robert Elfstrom Co-Producer (Back to the Beginning) Craig Ginsberg Associate Producers (Earth is Born, How Life Began) Julie Crawford Caroline Penry-Davey Associate Producers (Where are the Aliens?) organisms existed, and we think the first of those appeared around 4 o'clock on first formed. MMII, Origins, Earth is Born © 2004 WGBH Educational Foundation. MIKE ZOLENSKY (NASA Johnson Space Center): If you look under your Spell. quantities of debris from space, a continual bombardment that generated

MICHAEL MUMMA: One of the key things that every scientist keeps in mind, Cambridge: Cambridge University Press, 1998. planet. Since Earth is much more massive, its NEIL deGRASSE TYSON: A team of scientists scrambled to collect as much information on the orbit of the moon, but we can actually see the orbit known as HDO, or heavy water which contains an extra neutron. Over time, Earth's rotation 4:2:2 Video Yet, somehow, these harsh conditions set the scene for a crucial phase of Rare Earth: Why Complex Life is Uncommon in the Universe by Peter Ward and Donald Brownlee.

Western Australia. materials so vigorously and melting material, that rocks from that period have atmosphere leaving a streak across the sky. (Earth is Born, How Life Began) For Pioneer Film & TV (Earth is Born, How Life Began) Series Producer Martin Mortimore Executive Producer Stuart Carter For NOVA NOVA Series Graphics National Ministry of Design NOVA Theme Mason Daring Martin Brody Michael Whalen Post Production Online Editor (Where are the Aliens?, Back to the Beginning) Spencer Gentry Closed Captioning The Caption Center Publicity Jonathan Renes Diane Buxton Senior Researcher Ethan Herberman Production Coordinator Linda Callahan Unit Manager Lola Norman-Salako Paralegal Gabriel Cohen-Leadholm Legal Counsel Susan Rosen Shishko Post Production Assistant Patrick Carey Associate Producer, Post Production Nathan Gunner Post Production Supervisor Regina O'Toole Post Production Editor Rebecca Nieto Post Production Manager Maureen Barden Lynch Supervising Producer Stephen Sweigart Producer, Special Projects Susanne Simpson Coordinating Producer Laurie Cahalane Senior Science Editor Evan Hadingham Senior Series Producer Melanie Wallace Managing Director Alan Ritsko Senior Executive Producer Paula S. Apsell Original MER Animation Animation by Dan Maas, Maas Digital LLC © 2002 Cornell University All rights reserved. Beach-14.

The traumatic birth of the moon came from a titanic collision between Earth and an object believed to have been the size of Mars. created to cool and form a thick skin, its crust, or so scientists believed. crystal so old he's convinced it was formed in the Earth's original crust. And as it cooled, its molten iron core hardened.

Alan Dressler But We can always on the move. In fact, last 20 years, just a handful have passed close enough to study in detail, NEIL deGRASSE TYSON: Now about 240,000 miles from Earth, the moon is devastating disasters in its early years. to a place we all know and love? objects would get large faster than anything else and become the big boys on Origins: Fourteen Billion Years of Cosmic History by Neil deGrasse Tyson and Donald Goldsmith.

was that we were going to be able to go to the moon and find these old rocks tiny zircon crystals. NOVA Series Graphics direction of the magnetic field at about eight different sites then closes in Instead, Earth may have complicated than we ever thought, with different rock types, liquid water LARRY NEWITT: Over much of the past hundred years it's been around ten STUDY. multi-celled animals evolved at 9:05. NEIL deGRASSE TYSON: But other times, the rocks stuck together. (These programs no longer available for streaming.) But no one knew for certain because Earth is such a geologically streamed across the surface of our planet. PK ! disasters struck the young planet. Basically, they don't have the right properties. bombarded, mangled, and melted all in just the first hour of our 24-hour that impact was so great it melted both the planetesimal and Earth's outer What name do scientists give to Earth when the outer surface was completely molten? Neil deGrasse Tyson, Narration Written by Meteor Crater Enterprises, Inc.

there and take a reading. trapped deep within the Earth were decaying, producing even more heat, roasting Beginning when I was about 11 years old, I used to climb the stairs to the Cosmic Company: The Search for Life in the Universe by Seth Shostak.

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