Rosette Nebula - Westchester Amateur Astronomers
... Another IPA came from the Uinta Brewing Company of Utah, named “Dubhe” in honor of Alpha Ursa Majoris in Big Dipper, which appears on the label. I often use Dubhe as an alignment star for my Celestron CPC800. House Bill 140, 1996 Utah Code, named Dubhe as Utah’s “Centennial Star.” Utah became a stat ...
... Another IPA came from the Uinta Brewing Company of Utah, named “Dubhe” in honor of Alpha Ursa Majoris in Big Dipper, which appears on the label. I often use Dubhe as an alignment star for my Celestron CPC800. House Bill 140, 1996 Utah Code, named Dubhe as Utah’s “Centennial Star.” Utah became a stat ...
Getting to Know: Evidence for the Big Bang Theory
... named in Edwin Hubble’s honor. It was launched into ...
... named in Edwin Hubble’s honor. It was launched into ...
PowerPoint Presentation - AY 4: The Stars
... • Learn some astronomy. The details are not so important, the fact that we have been able to learn so much about the Universe is a more important point. ...
... • Learn some astronomy. The details are not so important, the fact that we have been able to learn so much about the Universe is a more important point. ...
May 2015 - Hermanus Astronomy
... Gravitational lensing occurs when a massive galaxy or cluster of galaxies bends the light emitted from a more distant galaxy, forming a highly magnified, though much distorted, image. In this particular case, the galaxy known as SDP.81 and an intervening galaxy line up so perfectly that the light f ...
... Gravitational lensing occurs when a massive galaxy or cluster of galaxies bends the light emitted from a more distant galaxy, forming a highly magnified, though much distorted, image. In this particular case, the galaxy known as SDP.81 and an intervening galaxy line up so perfectly that the light f ...
Observing the Sky
... electromagnetic radiation. Humans can see radiation only from blue light, which has a short wavelength, to red light, which has a longer wavelength. The rest of the electromagnetic spectrum is invisible to us! ...
... electromagnetic radiation. Humans can see radiation only from blue light, which has a short wavelength, to red light, which has a longer wavelength. The rest of the electromagnetic spectrum is invisible to us! ...
Electromagnetic Waves - Flipped Out Science with Mrs. Thomas!
... whether the object is moving towards the viewer or away from the viewer. If the object is moving towards the viewer, they are compressed into shorter wavelengths. If the object is moving away from the viewer, the waves are stretched out, making the wavelengths longer. In visible light, the light app ...
... whether the object is moving towards the viewer or away from the viewer. If the object is moving towards the viewer, they are compressed into shorter wavelengths. If the object is moving away from the viewer, the waves are stretched out, making the wavelengths longer. In visible light, the light app ...
Stars and galaxies Intro
... • Use special reflectors to focus X-rays and produce an image • The first X-ray telescopes were used to observe the sun. FYI: The Chandra X-ray Observatory ...
... • Use special reflectors to focus X-rays and produce an image • The first X-ray telescopes were used to observe the sun. FYI: The Chandra X-ray Observatory ...
Some Introductory Physics of Sound
... surface of the Sun moves to and fro in a periodic fashion. The velocities of this motion are small, only about 15-20 cm/s, but can still be tracked by the Doppler effect, whereby a slight change in the spectrum of the light can reveal how fast the emitter is moving towards or away from you. Astronom ...
... surface of the Sun moves to and fro in a periodic fashion. The velocities of this motion are small, only about 15-20 cm/s, but can still be tracked by the Doppler effect, whereby a slight change in the spectrum of the light can reveal how fast the emitter is moving towards or away from you. Astronom ...
universe - Global Change
... home to a variety of exotic objects. For example, quasars, which were first discovered in 1960, are still baffling objects. Incredibly energetic, they are found at great distances near what is thought to be the edge of the known universe (the most distant one has been estimated to be 10 billion ligh ...
... home to a variety of exotic objects. For example, quasars, which were first discovered in 1960, are still baffling objects. Incredibly energetic, they are found at great distances near what is thought to be the edge of the known universe (the most distant one has been estimated to be 10 billion ligh ...
LAST YEAR`S EXAM
... Q5 Seconds after the Big Bang, the distribution of proton and neutron energies are described by Maxwell-Boltzmann distributions. Show that by the time the temperature of the Universe is T=9.3x109K, the neutron to proton ratio is 0.2 He4 production only begins when the temperature is T=1.2 x109K, 400 ...
... Q5 Seconds after the Big Bang, the distribution of proton and neutron energies are described by Maxwell-Boltzmann distributions. Show that by the time the temperature of the Universe is T=9.3x109K, the neutron to proton ratio is 0.2 He4 production only begins when the temperature is T=1.2 x109K, 400 ...
WHERE DO ELEMENTS COME FROM?
... 1978 for detection of the Cosmic Microwave Background radiation! • The universe is glowing at 2.73K • This was the Third Great Observation to nail down the Big Bang as real! ...
... 1978 for detection of the Cosmic Microwave Background radiation! • The universe is glowing at 2.73K • This was the Third Great Observation to nail down the Big Bang as real! ...
ABC`s of the Sky - Northern Stars Planetarium
... Fireballs Pieces of rock that fall from space through Earth’s atmosphere and burn up due to friction with the air. Sometimes Fireballs explode! Small rocks that do this are sometimes called Shooting Stars or Meteors. Galaxy A huge group of stars. Galaxies often contain billions of stars. We live in ...
... Fireballs Pieces of rock that fall from space through Earth’s atmosphere and burn up due to friction with the air. Sometimes Fireballs explode! Small rocks that do this are sometimes called Shooting Stars or Meteors. Galaxy A huge group of stars. Galaxies often contain billions of stars. We live in ...
Tessmann Show Descriptions
... The show demonstrates the force of gravity and planetary motion. The effects of the suns gravitational pull on the planets that orbit it Water played a major role in the creation of continents and oceans on Earth. Our moons gravitational effect on the Earth’s orbit around the sun. Additionally discu ...
... The show demonstrates the force of gravity and planetary motion. The effects of the suns gravitational pull on the planets that orbit it Water played a major role in the creation of continents and oceans on Earth. Our moons gravitational effect on the Earth’s orbit around the sun. Additionally discu ...
Review
... time and has been expanding ever since n Universe began as an infinitely hot, dense concentration of energy n Evidences for big bang - Universal expansion - Cosmic microwave background (CMB) radiation: microwave radiations fall on Earth from all directions in a form of background signals (contin ...
... time and has been expanding ever since n Universe began as an infinitely hot, dense concentration of energy n Evidences for big bang - Universal expansion - Cosmic microwave background (CMB) radiation: microwave radiations fall on Earth from all directions in a form of background signals (contin ...
Probing Machs principle
... principle and general relativity give geodesics as solutions to their respective equations of motions. The least-time principle in its original form, despite the agreement with observations, may appear obsolete since the obtained stationary paths parallel those given by general relativity. However, ...
... principle and general relativity give geodesics as solutions to their respective equations of motions. The least-time principle in its original form, despite the agreement with observations, may appear obsolete since the obtained stationary paths parallel those given by general relativity. However, ...
The Dynamics of Small Bodies Dissipative and Radiation Forces
... Additional Forces on Small Bodies For planets, gravity is the largest force. However small bodies can be significantly affected by 1. Radiation pressure from the Sun. Pushes the particle outward. 2. Poynting-Robertson drag, a relativistic radiative effect which causes cm-sized (and smaller) particl ...
... Additional Forces on Small Bodies For planets, gravity is the largest force. However small bodies can be significantly affected by 1. Radiation pressure from the Sun. Pushes the particle outward. 2. Poynting-Robertson drag, a relativistic radiative effect which causes cm-sized (and smaller) particl ...
Origin of Our Solar System
... dust particles to stick together and accrete into billions of planetesimals with diameters of about 10 meters. The planetesimals then collide and form protoplanets. Meanwhile, the protosun in the center of the nebular disk becomes massive and hot enough to "turn on" by fusing hydrogen. ...
... dust particles to stick together and accrete into billions of planetesimals with diameters of about 10 meters. The planetesimals then collide and form protoplanets. Meanwhile, the protosun in the center of the nebular disk becomes massive and hot enough to "turn on" by fusing hydrogen. ...
CAREERS IN ASTRONOMY: GRADUATE SCHOOL AND TEACHING
... of many large antennas spread over 3000Km (and other types of radio receivers) that will be linked together via optic fibre cables. The total surface area of all the antennas together will add up to approximately one square kilometre giving 50 times the sensitivity and 10,000 times the survey speed ...
... of many large antennas spread over 3000Km (and other types of radio receivers) that will be linked together via optic fibre cables. The total surface area of all the antennas together will add up to approximately one square kilometre giving 50 times the sensitivity and 10,000 times the survey speed ...
The homogeneous and isotropic universe: Cosmology
... where dλ ≡ λr − λe & time between emission and reception λe ...
... where dλ ≡ λr − λe & time between emission and reception λe ...
Science in space
... As of 2005, the exploration of the other giant gas planets—Saturn, Uranus, and Neptune—remained at the first or second stage. In a series of U.S. missions launched in the 1970s, Pioneer 10 flew by Jupiter, whereas Pioneer 11 and Voyager 1 and 2 flew by both Jupiter and Saturn. Voyager 2 then went on ...
... As of 2005, the exploration of the other giant gas planets—Saturn, Uranus, and Neptune—remained at the first or second stage. In a series of U.S. missions launched in the 1970s, Pioneer 10 flew by Jupiter, whereas Pioneer 11 and Voyager 1 and 2 flew by both Jupiter and Saturn. Voyager 2 then went on ...
16 October 2006
... • The solar system is very flat. Why? • Nearly all the planets orbit and spin in the same direction. Why? • Inner planets are small; outer planets are big. Why? • Inner planets are mostly solid; outer planets are mostly gas and liquid. Why? • Inner planets have little hydrogen and helium; outer plan ...
... • The solar system is very flat. Why? • Nearly all the planets orbit and spin in the same direction. Why? • Inner planets are small; outer planets are big. Why? • Inner planets are mostly solid; outer planets are mostly gas and liquid. Why? • Inner planets have little hydrogen and helium; outer plan ...
midterm review answers
... 11. What happens to the force of gravity when distance between 2 objects decrease? When the distance between two objects decrease, the strength of gravity will increase. The closer two objects are, the greater the gravitational force (an inverse relationship). 12. What happens to the force of gravit ...
... 11. What happens to the force of gravity when distance between 2 objects decrease? When the distance between two objects decrease, the strength of gravity will increase. The closer two objects are, the greater the gravitational force (an inverse relationship). 12. What happens to the force of gravit ...
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.