Slide 1
... of 100-200 Mpc, but no sign of structure on a larger scale than that. The decreasing density of galaxies at the farthest distances is due to the difficulty of observing them. ...
... of 100-200 Mpc, but no sign of structure on a larger scale than that. The decreasing density of galaxies at the farthest distances is due to the difficulty of observing them. ...
Stars - Stallion Science
... • If there isn’t enough mass – gravity will not be strong enough to stop the expansion • Just right amount of mass – the expansion will slow down but not end completely • Too much mass – gravity will overcome the expansion and the universe will start to contract (the big crunch), becoming very hot a ...
... • If there isn’t enough mass – gravity will not be strong enough to stop the expansion • Just right amount of mass – the expansion will slow down but not end completely • Too much mass – gravity will overcome the expansion and the universe will start to contract (the big crunch), becoming very hot a ...
Positions in the Solar System
... collapsed million own years gravity. after As the it did Big so, Bang, the matter thelarger gas star began to form. This star grew or stuck together to form the became contained within and dense it began enough to move for the inmore aforming first giant and larger as it collected more and of The st ...
... collapsed million own years gravity. after As the it did Big so, Bang, the matter thelarger gas star began to form. This star grew or stuck together to form the became contained within and dense it began enough to move for the inmore aforming first giant and larger as it collected more and of The st ...
Slide 1
... collapsed million own years gravity. after As the it did Big so, Bang, the matter thelarger gas star began to form. This star grew or stuck together to form the became contained within and dense it began enough to move for the inmore aforming first giant and larger as it collected more and of The st ...
... collapsed million own years gravity. after As the it did Big so, Bang, the matter thelarger gas star began to form. This star grew or stuck together to form the became contained within and dense it began enough to move for the inmore aforming first giant and larger as it collected more and of The st ...
Slide 1
... collapsed million own years gravity. after As the it did Big so, Bang, the matter thelarger gas star began to form. This star grew or stuck together to form the became contained within and dense it began enough to move for the inmore aforming first giant and larger as it collected more and of The st ...
... collapsed million own years gravity. after As the it did Big so, Bang, the matter thelarger gas star began to form. This star grew or stuck together to form the became contained within and dense it began enough to move for the inmore aforming first giant and larger as it collected more and of The st ...
Slide 1
... Distance between stars in a galaxy About one parsec (defined later) One parsec is 3.26 light years ...
... Distance between stars in a galaxy About one parsec (defined later) One parsec is 3.26 light years ...
KEY Unit 10‐11 Test Review: Characteristics of the Universe
... 9. Astronomers have noticed supernovas in distant galaxies have a greater red shift than those in galaxies closer to the Earth. Astronomers theorize this is occurring because distant galaxies are moving _AWAY__ from Earth faster than galaxies that are nearby. 10. Betelgeuse is one of the brigh ...
... 9. Astronomers have noticed supernovas in distant galaxies have a greater red shift than those in galaxies closer to the Earth. Astronomers theorize this is occurring because distant galaxies are moving _AWAY__ from Earth faster than galaxies that are nearby. 10. Betelgeuse is one of the brigh ...
Astronomy Unit 4 Galaxies
... 36. The approximate age of the universe determined by using Hubble’s Constant. __________________________________ 37. The distribution of galaxies in the universe is not ___________________, but clusters of galaxies lie within structures called ___________________ which surround empty regions called ...
... 36. The approximate age of the universe determined by using Hubble’s Constant. __________________________________ 37. The distribution of galaxies in the universe is not ___________________, but clusters of galaxies lie within structures called ___________________ which surround empty regions called ...
U7 Review WS KEY
... c. galactic clusters b. cosmic background radiation d. abundance of light elements (H, He and Li) The first elements that were formed in the universe were? a. hydrogen and lithium c. hydrogen and helium b. lithium and helium d. lithium and beryllium 10. I can describe tools and models used by scie ...
... c. galactic clusters b. cosmic background radiation d. abundance of light elements (H, He and Li) The first elements that were formed in the universe were? a. hydrogen and lithium c. hydrogen and helium b. lithium and helium d. lithium and beryllium 10. I can describe tools and models used by scie ...
PPT - Mr.E Science
... Nebula – a huge gas cloud made up mainly of Hydrogen that collapse down on itself and compresses the gas down into a Protostar Star is “born” when the protostar has contracting tight enough for Hydrogen to fuse into Helium, this releases the light and energy we normally associate with a “normal” sta ...
... Nebula – a huge gas cloud made up mainly of Hydrogen that collapse down on itself and compresses the gas down into a Protostar Star is “born” when the protostar has contracting tight enough for Hydrogen to fuse into Helium, this releases the light and energy we normally associate with a “normal” sta ...
Wilmslow Guild Lecture 2008
... by observing distant galaxies, which are of course further back in time. In a series of papers in the 1950’s, Sir Fred Hoyle, with colleagues Fowler and the Burbridges, established the principle of stellar nucleosynthesis. As a star runs out of hydrogen, the helium “ash” in the core contracts and he ...
... by observing distant galaxies, which are of course further back in time. In a series of papers in the 1950’s, Sir Fred Hoyle, with colleagues Fowler and the Burbridges, established the principle of stellar nucleosynthesis. As a star runs out of hydrogen, the helium “ash” in the core contracts and he ...
Other Galaxies, their Distances, and the Expansion of the Universe
... galaxy was not part of the Milky Way. n Hubble and his staff then measured the redshifts (remember the Doppler Shift) of the galaxies. They were shocked with ...
... galaxy was not part of the Milky Way. n Hubble and his staff then measured the redshifts (remember the Doppler Shift) of the galaxies. They were shocked with ...
Astronomy - Calendar
... in distant nebulas by astronomers to a model of the universe based on relativity. Years later, Edwin Hubble found experimental evidence to help justify Lemaître's theory. He found that distant galaxies in every direction are going away from us with speeds proportional to their distance. ...
... in distant nebulas by astronomers to a model of the universe based on relativity. Years later, Edwin Hubble found experimental evidence to help justify Lemaître's theory. He found that distant galaxies in every direction are going away from us with speeds proportional to their distance. ...
The Realm of Physics
... (1) The meter (m) – the unit of distance (2) The kilogram (kg) – the unit of mass (3) The second (s) – the unit of time (4) The ampere (A) – the unit of electric current (5) The Kelvin (K) – the unit of temperature ...
... (1) The meter (m) – the unit of distance (2) The kilogram (kg) – the unit of mass (3) The second (s) – the unit of time (4) The ampere (A) – the unit of electric current (5) The Kelvin (K) – the unit of temperature ...
ASTR 2020 Space Astronomy Homework #3 Due Tuesday, 4
... [d] If the mass of the asteroid were to fill a sphere with the radius you estimated in part [c], what would be its density? ...
... [d] If the mass of the asteroid were to fill a sphere with the radius you estimated in part [c], what would be its density? ...
Astronomy
... 10-15 billion years old (Earth is 4.6 billion years old) Where do we think the universe came from/how did it form? ...
... 10-15 billion years old (Earth is 4.6 billion years old) Where do we think the universe came from/how did it form? ...
News Release - האוניברסיטה העברית
... Universe billions of years ago has been formulated by Hebrew University of Jerusalem cosmologists. The theory takes issue with the prevailing view on how the galaxies came to exist. The new theory, motivated by advanced astronomical observations and based on state-of-the-art computer simulations, ma ...
... Universe billions of years ago has been formulated by Hebrew University of Jerusalem cosmologists. The theory takes issue with the prevailing view on how the galaxies came to exist. The new theory, motivated by advanced astronomical observations and based on state-of-the-art computer simulations, ma ...
What is the universe???
... • The Earth wobbles in space so that it’s tilt changes about 25 degrees…every 41,000 years • Change in tilt = Change in intensity of seasons • When spring/summer is milder, ice and snow ...
... • The Earth wobbles in space so that it’s tilt changes about 25 degrees…every 41,000 years • Change in tilt = Change in intensity of seasons • When spring/summer is milder, ice and snow ...
Take Home #1 Complete the following on your own paper. Do not
... C. Scientists work individually and do not usually interact with each other. D. Scientists each have jobs where they study completely different areas of science. 17) A Belgian priest, Georges Lamaître, was the first to develop a “big bang” theory. In 1927, after studying red shifts of galaxies, he p ...
... C. Scientists work individually and do not usually interact with each other. D. Scientists each have jobs where they study completely different areas of science. 17) A Belgian priest, Georges Lamaître, was the first to develop a “big bang” theory. In 1927, after studying red shifts of galaxies, he p ...
Take Home #1 Complete the following on your own paper. Do not
... C. Scientists work individually and do not usually interact with each other. D. Scientists each have jobs where they study completely different areas of science. 17) A Belgian priest, Georges Lamaître, was the first to develop a “big bang” theory. In 1927, after studying red shifts of galaxies, he p ...
... C. Scientists work individually and do not usually interact with each other. D. Scientists each have jobs where they study completely different areas of science. 17) A Belgian priest, Georges Lamaître, was the first to develop a “big bang” theory. In 1927, after studying red shifts of galaxies, he p ...
Document
... like the Moon is to Earth, so one side of the planet is always facing its star. This setup creates one of the largest temperature differences astronomers have ever seen on an exoplanet. One side of the planet is always hot as lava, while the other is chilled possibly below freezing. ...
... like the Moon is to Earth, so one side of the planet is always facing its star. This setup creates one of the largest temperature differences astronomers have ever seen on an exoplanet. One side of the planet is always hot as lava, while the other is chilled possibly below freezing. ...
chapter_5_lecture_notes
... The dying star shrinks into a white dwarf which is a small dim star that is very dense and hot. Or the supernova collapses and the pull of gravity is so strong that nothing can escape, not even light, resulting in a black ...
... The dying star shrinks into a white dwarf which is a small dim star that is very dense and hot. Or the supernova collapses and the pull of gravity is so strong that nothing can escape, not even light, resulting in a black ...
Theories
... The Universe includes living things, planets, stars, galaxies, dust clouds, light, and even time. ...
... The Universe includes living things, planets, stars, galaxies, dust clouds, light, and even time. ...
Study Guide - Universe Exam key 2014-15 v2
... represents our own galaxy. Spiral Galaxy looks like a pinwheel and is the type of galaxy we live in. Elliptical galaxies look like flattened balls. The most common. Irregular Galaxies have no real shape and are the least common. ...
... represents our own galaxy. Spiral Galaxy looks like a pinwheel and is the type of galaxy we live in. Elliptical galaxies look like flattened balls. The most common. Irregular Galaxies have no real shape and are the least common. ...
Observable universe
The observable universe consists of the galaxies and other matter that can, in principle, be observed from Earth at the present time because light and other signals from these objects has had time to reach the Earth since the beginning of the cosmological expansion. Assuming the universe is isotropic, the distance to the edge of the observable universe is roughly the same in every direction. That is, the observable universe is a spherical volume (a ball) centered on the observer. Every location in the Universe has its own observable universe, which may or may not overlap with the one centered on Earth.The word observable used in this sense does not depend on whether modern technology actually permits detection of radiation from an object in this region (or indeed on whether there is any radiation to detect). It simply indicates that it is possible in principle for light or other signals from the object to reach an observer on Earth. In practice, we can see light only from as far back as the time of photon decoupling in the recombination epoch. That is when particles were first able to emit photons that were not quickly re-absorbed by other particles. Before then, the Universe was filled with a plasma that was opaque to photons.The surface of last scattering is the collection of points in space at the exact distance that photons from the time of photon decoupling just reach us today. These are the photons we detect today as cosmic microwave background radiation (CMBR). However, with future technology, it may be possible to observe the still older relic neutrino background, or even more distant events via gravitational waves (which also should move at the speed of light). Sometimes astrophysicists distinguish between the visible universe, which includes only signals emitted since recombination—and the observable universe, which includes signals since the beginning of the cosmological expansion (the Big Bang in traditional cosmology, the end of the inflationary epoch in modern cosmology). According to calculations, the comoving distance (current proper distance) to particles from the CMBR, which represent the radius of the visible universe, is about 14.0 billion parsecs (about 45.7 billion light years), while the comoving distance to the edge of the observable universe is about 14.3 billion parsecs (about 46.6 billion light years), about 2% larger.The best estimate of the age of the universe as of 2015 is 7010137990000000000♠13.799±0.021 billion years but due to the expansion of space humans are observing objects that were originally much closer but are now considerably farther away (as defined in terms of cosmological proper distance, which is equal to the comoving distance at the present time) than a static 13.8 billion light-years distance. It is estimated that the diameter of the observable universe is about 28 gigaparsecs (91 billion light-years, 8.8×1026 metres or 5.5×1023 miles), putting the edge of the observable universe at about 46–47 billion light-years away.