Stars - Stallion Science
... “Recognize that the very molecules that make up your body, the atoms that construct the molecules, are traceable to the crucibles that were once the centers of high mass stars that exploded their chemically rich guts into the galaxy, enriching pristine gas clouds with the chemistry of life. So that ...
... “Recognize that the very molecules that make up your body, the atoms that construct the molecules, are traceable to the crucibles that were once the centers of high mass stars that exploded their chemically rich guts into the galaxy, enriching pristine gas clouds with the chemistry of life. So that ...
Written in the stars THE NOBEL PRIZE IN PHYSICS 2011
... When Einstein got rid of the cosmological constant and surrendered to the idea of a non-static Universe, he related the geometrical shape of the Universe to its fate. Is it open or closed, or is it something in between – a flat Universe? An open Universe is one where the gravitational force of matte ...
... When Einstein got rid of the cosmological constant and surrendered to the idea of a non-static Universe, he related the geometrical shape of the Universe to its fate. Is it open or closed, or is it something in between – a flat Universe? An open Universe is one where the gravitational force of matte ...
Cosmos & Contact - Access Research Network
... • Both repulsive & attractive, due to existence of positive & negative charges. • + and – charges must be almost exactly equal in number, to better than one part in 1040. • Yet protons (+) and electrons (-) drastically different in mass, and froze out at quite different times in the early universe. ...
... • Both repulsive & attractive, due to existence of positive & negative charges. • + and – charges must be almost exactly equal in number, to better than one part in 1040. • Yet protons (+) and electrons (-) drastically different in mass, and froze out at quite different times in the early universe. ...
Structure of the Universe
... H, through the Hubble law: We can always get V from the red shift, so if we know d or H we can find the other ...
... H, through the Hubble law: We can always get V from the red shift, so if we know d or H we can find the other ...
creation of a cosmology: big bang theory _eng
... Around the same time the Dutch astronomer Willem deSitter used Einstein's general theory of relativity to develop his own model of the Universe. His model was unique in that it did not take into consideration the existence of matter in the Universe. However it did go beyond Einstein's model in that ...
... Around the same time the Dutch astronomer Willem deSitter used Einstein's general theory of relativity to develop his own model of the Universe. His model was unique in that it did not take into consideration the existence of matter in the Universe. However it did go beyond Einstein's model in that ...
THE BIG BANG THEORY
... mass of the Universe consists of dark matter, a substance quite different from the ordinary matter that makes up atoms and the familiar world around us. • Dark matter only interacts with gravity, which means it neither reflects, emits or obstructs light (or indeed any other type of electromagnetic r ...
... mass of the Universe consists of dark matter, a substance quite different from the ordinary matter that makes up atoms and the familiar world around us. • Dark matter only interacts with gravity, which means it neither reflects, emits or obstructs light (or indeed any other type of electromagnetic r ...
1 light year = 9 x 10 12 km
... – 8 minutes to reach us from the Sun – 8 years to reach us from Sirius (8 light-years away) – 1,500 years to reach us from the Orion Nebula ...
... – 8 minutes to reach us from the Sun – 8 years to reach us from Sirius (8 light-years away) – 1,500 years to reach us from the Orion Nebula ...
Bill Nye – Outer Space Worksheet
... c. 540 million kilometers 14. It will take light at least forty years to reach the nearest star. b. False ...
... c. 540 million kilometers 14. It will take light at least forty years to reach the nearest star. b. False ...
21structure1i
... The local group extends out over several million light years Group is dominated by the two largest spirals: M31 and the Milky Way Most other galaxies are small ...
... The local group extends out over several million light years Group is dominated by the two largest spirals: M31 and the Milky Way Most other galaxies are small ...
1 - UCSC Physics - University of California, Santa Cruz
... pulsars in the J0737-3039 system are actually very far apart compared to their sizes. In a true scale model, if the pulsars were the sizes of marbles, they would be about 750 feet (225 meters) apart. Albert Einstein's 90-year-old general theory of relativity has just been put through a series of som ...
... pulsars in the J0737-3039 system are actually very far apart compared to their sizes. In a true scale model, if the pulsars were the sizes of marbles, they would be about 750 feet (225 meters) apart. Albert Einstein's 90-year-old general theory of relativity has just been put through a series of som ...
TR-16
... Dark energy can be generalized to quintessence, which is a dynamic time-evolving spatially-changing form of energy that could have negative pressure. Another explanation of dark energy to a cosmic field associated with inflation. The problem could also be with general relativity itself. ...
... Dark energy can be generalized to quintessence, which is a dynamic time-evolving spatially-changing form of energy that could have negative pressure. Another explanation of dark energy to a cosmic field associated with inflation. The problem could also be with general relativity itself. ...
ISP 205: Visions of the Universe
... Earth orbits the Sun (revolves) once every year… • at an average distance of 1 AU ≈ 150 million km. • with Earth’s axis tilted by 23.5º (pointing to Polaris). • and rotates in the same direction it orbits, counterclockwise as viewed from above the North Pole. ...
... Earth orbits the Sun (revolves) once every year… • at an average distance of 1 AU ≈ 150 million km. • with Earth’s axis tilted by 23.5º (pointing to Polaris). • and rotates in the same direction it orbits, counterclockwise as viewed from above the North Pole. ...
Stars and Galaxies - Lunar and Planetary Institute
... Dominant scientific theory about the origin of the universe Occurred ~13.7 billion years ago ...
... Dominant scientific theory about the origin of the universe Occurred ~13.7 billion years ago ...
Press release - ASTRONOMY GROUP – University of St Andrews
... previous estimates of the size of the Universe are wrong. He explained, “These Cepheids stars which get brighter and fainter by some tens of percent every ten to a hundred days are mostly understood. But recently it has become clear that our theories of what happens in the outer layers of these star ...
... previous estimates of the size of the Universe are wrong. He explained, “These Cepheids stars which get brighter and fainter by some tens of percent every ten to a hundred days are mostly understood. But recently it has become clear that our theories of what happens in the outer layers of these star ...
Astrophysics Outline—Option E
... E.4.1 Describe Newton’s model of the universe E.4.2 Explain Olbers’ paradox The Big Bang model E.4.3 Suggest that the red-shift of light from galaxies indicates that the universe is expanding E.4.4 Describe both space and time as originating with the Big Bang E.4.5 Describe the discovery of cosmic m ...
... E.4.1 Describe Newton’s model of the universe E.4.2 Explain Olbers’ paradox The Big Bang model E.4.3 Suggest that the red-shift of light from galaxies indicates that the universe is expanding E.4.4 Describe both space and time as originating with the Big Bang E.4.5 Describe the discovery of cosmic m ...
Topic Outline - Physics Rocks!
... E.4.12 State that current scientific evidence suggests that the universe is open E.4.13 Discuss an example of the international nature of recent astrophysics research ...
... E.4.12 State that current scientific evidence suggests that the universe is open E.4.13 Discuss an example of the international nature of recent astrophysics research ...
Are we alone? - School of Physics
... would have had little effect. • In 2004, the same experiment would have devastating consequences (e.g., financial system collapses, no electricity, no water, no fuel, no public transport). • This process will accelerate. • There will come a point when the machines are in control. • We are becoming m ...
... would have had little effect. • In 2004, the same experiment would have devastating consequences (e.g., financial system collapses, no electricity, no water, no fuel, no public transport). • This process will accelerate. • There will come a point when the machines are in control. • We are becoming m ...
AST1001.ch1
... Earth orbits the Sun (revolves) once every year… • at an average distance of 1 AU ≈ 150 million km. • with Earth’s axis tilted by 23.5º (pointing to Polaris). • and rotates in the same direction it orbits, counterclockwise as viewed from above the North Pole. ...
... Earth orbits the Sun (revolves) once every year… • at an average distance of 1 AU ≈ 150 million km. • with Earth’s axis tilted by 23.5º (pointing to Polaris). • and rotates in the same direction it orbits, counterclockwise as viewed from above the North Pole. ...
Wien`s law - Uplift Education
... • Closed Universe A model of the universe in which density of the Universe is such that gravity will stop the universe expanding and then cause it to contract. Eventually the contraction will result in a ‘Big Crunch’ after which the whole creation process could start again. • Open Universe A model o ...
... • Closed Universe A model of the universe in which density of the Universe is such that gravity will stop the universe expanding and then cause it to contract. Eventually the contraction will result in a ‘Big Crunch’ after which the whole creation process could start again. • Open Universe A model o ...
Essential Questions
... sky can be observed, described, predicted, and explained with models. (MS-ESS1-1) Earth and its solar system are part of the Milky Way galaxy, which is one of many galaxies in the universe. (MS-ESS1-2) ...
... sky can be observed, described, predicted, and explained with models. (MS-ESS1-1) Earth and its solar system are part of the Milky Way galaxy, which is one of many galaxies in the universe. (MS-ESS1-2) ...
Stefan-Boltzmann`s law Wien`s law
... █ State one piece of evidence that indicates that the Universe is expanding. ► light from distant galaxies/stars is red-shifted (which means they move away from us – as the red-shifting occurs in all direction, the universe must be expanding) ► existence of CMB ► the helium abundance in the universe ...
... █ State one piece of evidence that indicates that the Universe is expanding. ► light from distant galaxies/stars is red-shifted (which means they move away from us – as the red-shifting occurs in all direction, the universe must be expanding) ► existence of CMB ► the helium abundance in the universe ...
30galaxies and the universe
... 18. When the rate of expansion of the universe is known, it is possible to calculate the ...
... 18. When the rate of expansion of the universe is known, it is possible to calculate the ...
Birth, Age and the Future of the Universe
... Theory predicts that 24 percent of all matter was transformed into helium, and it is a triumph for Big Bang theory that one has never found a gas cloud in our Galaxy or other galaxies with less than this amount of helium. Also the observed abundances of deuterium and lithium agree well with theory. ...
... Theory predicts that 24 percent of all matter was transformed into helium, and it is a triumph for Big Bang theory that one has never found a gas cloud in our Galaxy or other galaxies with less than this amount of helium. Also the observed abundances of deuterium and lithium agree well with theory. ...
Lecture 24, PPT version
... • Why Hubble’s law does not say that we are at the center of the universe ...
... • Why Hubble’s law does not say that we are at the center of the universe ...
Universe
The Universe is all of time and space and its contents. The Universe includes planets, stars, galaxies, the contents of intergalactic space, the smallest subatomic particles, and all matter and energy. The observable universe is about 28 billion parsecs (91 billion light-years) in diameter at the present time. The size of the whole Universe is not known and may be infinite. Observations and the development of physical theories have led to inferences about the composition and evolution of the Universe.Throughout recorded history, cosmologies and cosmogonies, including scientific models, have been proposed to explain observations of the Universe. The earliest quantitative geocentric models were developed by ancient Greek philosophers and Indian philosophers. Over the centuries, more precise astronomical observations led to Nicolaus Copernicus's heliocentric model of the Solar System and Johannes Kepler's improvement on that model with elliptical orbits, which was eventually explained by Isaac Newton's theory of gravity. Further observational improvements led to the realization that the Solar System is located in a galaxy composed of billions of stars, the Milky Way. It was subsequently discovered that our galaxy is just one of many. On the largest scales, it is assumed that the distribution of galaxies is uniform and the same in all directions, meaning that the Universe has neither an edge nor a center. Observations of the distribution of these galaxies and their spectral lines have led to many of the theories of modern physical cosmology. The discovery in the early 20th century that galaxies are systematically redshifted suggested that the Universe is expanding, and the discovery of the cosmic microwave background radiation suggested that the Universe had a beginning. Finally, observations in the late 1990s indicated the rate of the expansion of the Universe is increasing indicating that the majority of energy is most likely in an unknown form called dark energy. The majority of mass in the universe also appears to exist in an unknown form, called dark matter.The Big Bang theory is the prevailing cosmological model describing the development of the Universe. Space and time were created in the Big Bang, and these were imbued with a fixed amount of energy and matter; as space expands, the density of that matter and energy decreases. After the initial expansion, the Universe cooled sufficiently to allow the formation first of subatomic particles and later of simple atoms. Giant clouds of these primordial elements later coalesced through gravity to form stars. Assuming that the prevailing model is correct, the age of the Universe is measured to be 7001137990000000000♠13.799±0.021 billion years.There are many competing hypotheses about the ultimate fate of the Universe. Physicists and philosophers remain unsure about what, if anything, preceded the Big Bang. Many refuse to speculate, doubting that any information from any such prior state could ever be accessible. There are various multiverse hypotheses, in which some physicists have suggested that the Universe might be one among many universes that likewise exist.