Galaxy clusters - University of Iowa Astrophysics
... source, we can figure out the total mass in the lens. This provides an independent confirmation of dark matter. • A lense can act as a huge telescope. The deepest images of the most distant galaxies are obtained with clusters acting as gravitational lenses. ...
... source, we can figure out the total mass in the lens. This provides an independent confirmation of dark matter. • A lense can act as a huge telescope. The deepest images of the most distant galaxies are obtained with clusters acting as gravitational lenses. ...
Slide 1
... Nothing left (that we know of) from before the Big Bang…so don’t ask what happened before…no one knows! The idea begins with Hubble’s Discovery, 1939 – the Universe is moving away…expanding in all directions taking galaxies with it = Hubble’s Law Thus, in reverse thought, the Universe must have be ...
... Nothing left (that we know of) from before the Big Bang…so don’t ask what happened before…no one knows! The idea begins with Hubble’s Discovery, 1939 – the Universe is moving away…expanding in all directions taking galaxies with it = Hubble’s Law Thus, in reverse thought, the Universe must have be ...
The Extreme Universe of Gamma-ray Astronomy
... amount of dark matter in the Universe influences its ultimate fate WIMPs may determine our Cosmic Destiny! GLAST should be able to see gamma rays from WIMPs within 3 years of observations ...
... amount of dark matter in the Universe influences its ultimate fate WIMPs may determine our Cosmic Destiny! GLAST should be able to see gamma rays from WIMPs within 3 years of observations ...
Slide 1
... release of nuclear energy. When the star is particularly massive, then its core will collapse and in so doing will release a huge amount of energy. This will cause a blast wave that ejects the star’s envelop into interstellar space. Many supernovae have been seen in nearby galaxies, they are relativ ...
... release of nuclear energy. When the star is particularly massive, then its core will collapse and in so doing will release a huge amount of energy. This will cause a blast wave that ejects the star’s envelop into interstellar space. Many supernovae have been seen in nearby galaxies, they are relativ ...
The dance of elements in space: from clouds to planets
... zone of the pre-stellar core, the gravitational force wins against the pressure and whatever other mechanism may have contrasted it, turbulence, magnetic fields... Nothing can prevent the storm to begin! Matter from the whole core rains freely towards the center, forming first a dense object that wi ...
... zone of the pre-stellar core, the gravitational force wins against the pressure and whatever other mechanism may have contrasted it, turbulence, magnetic fields... Nothing can prevent the storm to begin! Matter from the whole core rains freely towards the center, forming first a dense object that wi ...
Astrophysics E1. This question is about stars.
... Newton’s model states that the universe is infinite (static) and uniform; ● this means that stars are uniformly spaced; ● and that if it is infinite there must be a star at every point in space / a star along every line of sight; ● since there are regions without stars, Newton’s model must be inadeq ...
... Newton’s model states that the universe is infinite (static) and uniform; ● this means that stars are uniformly spaced; ● and that if it is infinite there must be a star at every point in space / a star along every line of sight; ● since there are regions without stars, Newton’s model must be inadeq ...
1-structure-of-the-universe-and-the-big-bang
... the passage below and on your knowledge of Earth Science. Cosmic Microwave Background Radiation In the 1920s, Edwin Hubble's discovery of a pattern in the red shift of light from galaxies moving away from Earth led to the theory of an expanding universe. This expansion implies that the universe was ...
... the passage below and on your knowledge of Earth Science. Cosmic Microwave Background Radiation In the 1920s, Edwin Hubble's discovery of a pattern in the red shift of light from galaxies moving away from Earth led to the theory of an expanding universe. This expansion implies that the universe was ...
CHAPTER 29 STARS 240 points
... universe began in a highly (7) state, it would have been very hot, and the high temperatures would have filled it with (8) ...
... universe began in a highly (7) state, it would have been very hot, and the high temperatures would have filled it with (8) ...
Part 1 - Cura
... Example 2 [8]. “It has become clear in the mid-90’s, that large scale events in the Solar System, including planetophysical transformations, are being caused by material and energetic non-uniformity's in anisotropic interstellar space. In its travel through interstellar space, the Heliosphere [solar ...
... Example 2 [8]. “It has become clear in the mid-90’s, that large scale events in the Solar System, including planetophysical transformations, are being caused by material and energetic non-uniformity's in anisotropic interstellar space. In its travel through interstellar space, the Heliosphere [solar ...
d - Haus der Astronomie
... By averaging, we find the approximate distance to the Andromeda Galaxy: (2,52 ± 0,14) 10 lyly ...
... By averaging, we find the approximate distance to the Andromeda Galaxy: (2,52 ± 0,14) 10 lyly ...
NASA Ames Research Center - International Innovation
... foot government building at NASA’s Ames Center. It is designed to fit with the surrounding environment and react intuitively to changes in weather, seasons and building usage. Due to large windows and a narrow building that makes the most of the Sun’s arc, artificial lighting is required for only 40 d ...
... foot government building at NASA’s Ames Center. It is designed to fit with the surrounding environment and react intuitively to changes in weather, seasons and building usage. Due to large windows and a narrow building that makes the most of the Sun’s arc, artificial lighting is required for only 40 d ...
The phenomena of astrophysical masers are not new by any means
... obscured by dust and gas. The discovery of water masers in galaxies billions of light years away showed that water molecules existed much earlier in the age of the universe than originally theorized. It was thought that organic molecules could not exist in deep space until the discovery of masers wi ...
... obscured by dust and gas. The discovery of water masers in galaxies billions of light years away showed that water molecules existed much earlier in the age of the universe than originally theorized. It was thought that organic molecules could not exist in deep space until the discovery of masers wi ...
The initial conditions and the large
... : discipline of using the departures from homogeneity observed in astronomical surveys to distinguish between cosmological models. • Huge data sets, but fundamental limits to information: – on large scales: – on small scales: ...
... : discipline of using the departures from homogeneity observed in astronomical surveys to distinguish between cosmological models. • Huge data sets, but fundamental limits to information: – on large scales: – on small scales: ...
Star G has an apparent magnitude of +5.0 and an absolute
... surface temperature as our Sun, and is about 1.33 pc from Earth. It has apparent magnitude zero, while our sun has apparent magnitude -27. • The luminosity of α Cen is larger than our Sun • The luminosity of α Cen is much less than our Sun • The flux from α Cen is about 1010 times less than our Sun ...
... surface temperature as our Sun, and is about 1.33 pc from Earth. It has apparent magnitude zero, while our sun has apparent magnitude -27. • The luminosity of α Cen is larger than our Sun • The luminosity of α Cen is much less than our Sun • The flux from α Cen is about 1010 times less than our Sun ...
Super Giant
... Because of the hugeness of space, it takes millions of years for the light given- off by the changes of stars and galaxies to reach us, therefore, these star may have burnt-out or exploded but we will not see if for millions of years. ...
... Because of the hugeness of space, it takes millions of years for the light given- off by the changes of stars and galaxies to reach us, therefore, these star may have burnt-out or exploded but we will not see if for millions of years. ...
IS AN ALTERNATE COSMOLOGY BECOMING NECESSARY?
... galaxies could rapidly build larger galaxies via mergers. For this to happen we must see many millions of them, but instead there are a paltry few. Merging could be possible but it is likely to take trillions of years for two galaxies to complete the merger. This amount of time cannot be accepted so ...
... galaxies could rapidly build larger galaxies via mergers. For this to happen we must see many millions of them, but instead there are a paltry few. Merging could be possible but it is likely to take trillions of years for two galaxies to complete the merger. This amount of time cannot be accepted so ...
Galaxy clusters - University of Iowa Astrophysics
... source, we can figure out the total mass in the lens. This provides an independent confirmation of dark matter. • A lense can act as a huge telescope. The deepest images of the most distant galaxies are obtained with clusters acting as gravitational lenses. ...
... source, we can figure out the total mass in the lens. This provides an independent confirmation of dark matter. • A lense can act as a huge telescope. The deepest images of the most distant galaxies are obtained with clusters acting as gravitational lenses. ...
The Sun - SCHOOLinSITES
... particles from the solar wind and from the magnetosphere that react with and excite the oxygen and nitrogen of Earth’s upper atmosphere; usually seen in the sky near Earth’s magnetic poles. – are the result of the interaction between the solar wind and Earth’s magnetosphere. – usually seen close to ...
... particles from the solar wind and from the magnetosphere that react with and excite the oxygen and nitrogen of Earth’s upper atmosphere; usually seen in the sky near Earth’s magnetic poles. – are the result of the interaction between the solar wind and Earth’s magnetosphere. – usually seen close to ...
Meteors, Meteoroids, and Meteorites
... There are three kinds of meteorites. They are stony, iron, and stony-iron. Stony meteorites consist of minerals rich in silicon and oxygen, with smaller amounts of iron, magnesium, and other elements. One group of stony meteorites is called chondrites. They are pieces of the same material from which ...
... There are three kinds of meteorites. They are stony, iron, and stony-iron. Stony meteorites consist of minerals rich in silicon and oxygen, with smaller amounts of iron, magnesium, and other elements. One group of stony meteorites is called chondrites. They are pieces of the same material from which ...
How Big Is Our Universe? - Harvard
... try this: picturing your local universe Although our view of the universe is limited, our imaginations are not. Astronomers have indirect evidence that the universe of galaxies extends far beyond the region we can see. But no one knows if the whole universe is infinitely large — large beyond limit. ...
... try this: picturing your local universe Although our view of the universe is limited, our imaginations are not. Astronomers have indirect evidence that the universe of galaxies extends far beyond the region we can see. But no one knows if the whole universe is infinitely large — large beyond limit. ...
MLAwiki
... 3. Neptune appears greenish-blue because of __________ gas in its atmosphere 4. Neptune has four rings: two thin and two thick 5. It takes Neptune 164 Earth years to complete a revolution around the sun 6. The planet rotates on its axis every __________ hours 7. One of Neptune’s 11 moons is unusual ...
... 3. Neptune appears greenish-blue because of __________ gas in its atmosphere 4. Neptune has four rings: two thin and two thick 5. It takes Neptune 164 Earth years to complete a revolution around the sun 6. The planet rotates on its axis every __________ hours 7. One of Neptune’s 11 moons is unusual ...
Sparta High School
... 5.1 Science Practices All students will understand that science is both a body of knowledge and an evidence-based, model-building enterprise that continually extends, refines, and revises knowledge. The four Science Practices strands encompass the knowledge and reasoning skills that students must ac ...
... 5.1 Science Practices All students will understand that science is both a body of knowledge and an evidence-based, model-building enterprise that continually extends, refines, and revises knowledge. The four Science Practices strands encompass the knowledge and reasoning skills that students must ac ...
Unpublished draft available in format
... astronomy is constantly being sustained or even increased by the development of new techniques and instruments; radio astronomy and space observatories are two formidable examples in recent years. ...
... astronomy is constantly being sustained or even increased by the development of new techniques and instruments; radio astronomy and space observatories are two formidable examples in recent years. ...
Outer space
Outer space, or just space, is the void that exists between celestial bodies, including the Earth. It is not completely empty, but consists of a hard vacuum containing a low density of particles, predominantly a plasma of hydrogen and helium as well as electromagnetic radiation, magnetic fields, neutrinos, dust and cosmic rays. The baseline temperature, as set by the background radiation from the Big Bang, is 2.7 kelvin (K). Plasma with a number density of less than one hydrogen atom per cubic metre and a temperature of millions of kelvin in the space between galaxies accounts for most of the baryonic (ordinary) matter in outer space; local concentrations have condensed into stars and galaxies. In most galaxies, observations provide evidence that 90% of the mass is in an unknown form, called dark matter, which interacts with other matter through gravitational but not electromagnetic forces. Data indicates that the majority of the mass-energy in the observable Universe is a poorly understood vacuum energy of space which astronomers label dark energy. Intergalactic space takes up most of the volume of the Universe, but even galaxies and star systems consist almost entirely of empty space.There is no firm boundary where space begins. However the Kármán line, at an altitude of 100 km (62 mi) above sea level, is conventionally used as the start of outer space in space treaties and for aerospace records keeping. The framework for international space law was established by the Outer Space Treaty, which was passed by the United Nations in 1967. This treaty precludes any claims of national sovereignty and permits all states to freely explore outer space. Despite the drafting of UN resolutions for the peaceful uses of outer space, anti-satellite weapons have been tested in Earth orbit.Humans began the physical exploration of space during the 20th century with the advent of high-altitude balloon flights, followed by manned rocket launches. Earth orbit was first achieved by Yuri Gagarin of the Soviet Union in 1961 and unmanned spacecraft have since reached all of the known planets in the Solar System. Due to the high cost of getting into space, manned spaceflight has been limited to low Earth orbit and the Moon.Outer space represents a challenging environment for human exploration because of the dual hazards of vacuum and radiation. Microgravity also has a negative effect on human physiology that causes both muscle atrophy and bone loss. In addition to these health and environmental issues, the economic cost of putting objects, including humans, into space is high.