what`s up this month – march 2016
... handle. These will point the way to Polaris which will be to the north of overhead at about 50º above the northern horizon. Polaris is the only moderately bright star in a fairly empty patch of sky. When you have found Polaris turn completely around and you will be facing south. To use this chart, p ...
... handle. These will point the way to Polaris which will be to the north of overhead at about 50º above the northern horizon. Polaris is the only moderately bright star in a fairly empty patch of sky. When you have found Polaris turn completely around and you will be facing south. To use this chart, p ...
5-E Galaxy T - McDonald Observatory
... Do you think galaxies collide? Why or why not? Galaxies, compared to their size, are closer together than stars. They are also much more massive, having the combined mass of billions of stars. So, even over a large distance the force of gravity between galaxies can accelerate them toward each other. ...
... Do you think galaxies collide? Why or why not? Galaxies, compared to their size, are closer together than stars. They are also much more massive, having the combined mass of billions of stars. So, even over a large distance the force of gravity between galaxies can accelerate them toward each other. ...
Parallax
... For attaining a better result, the separation between two observers should be as far as possible. To determine lunar parallax, we have to use simultaneous photography. After that, the parallax of the moon is determined through digital analysis. In addition, the distance of the moon can be computed b ...
... For attaining a better result, the separation between two observers should be as far as possible. To determine lunar parallax, we have to use simultaneous photography. After that, the parallax of the moon is determined through digital analysis. In addition, the distance of the moon can be computed b ...
Last signal sent from RTG
... spacecraft is carrying a gold plaque that describes what humans look like, where they are, and the date when the mission began. Pioneer 10 will continue to coast silently as a ghost ship into interstellar space. It is moving in a straight line away from the sun near the elliptic plane, heading downs ...
... spacecraft is carrying a gold plaque that describes what humans look like, where they are, and the date when the mission began. Pioneer 10 will continue to coast silently as a ghost ship into interstellar space. It is moving in a straight line away from the sun near the elliptic plane, heading downs ...
HW1-6
... suddenly appeared, the old system said it must be earthly (under the sphere of the moon). Tycho’s observations indicated that the star could not be close. If it were close, it would have shifted (parallax). ...
... suddenly appeared, the old system said it must be earthly (under the sphere of the moon). Tycho’s observations indicated that the star could not be close. If it were close, it would have shifted (parallax). ...
Expansion of the Universe
... For objects in our ordinary experience, like the rising loaf of raisin bread dough also used as an analogy to the expanding Universe, there are two ways to see that the object is expanding: 1. The distances between objects are all increasing, so the distance between any pair of raisins increases by ...
... For objects in our ordinary experience, like the rising loaf of raisin bread dough also used as an analogy to the expanding Universe, there are two ways to see that the object is expanding: 1. The distances between objects are all increasing, so the distance between any pair of raisins increases by ...
CHAPTER 8, Sun
... interior layers to the photosphere is mostly by convection. Convection occurs because the opacity of this layer is higher than the layer below. The Radiation Zone extends from about .25R to 0.8R. In this region energy transport from the core is mostly by radiation. This is because the opacity in t ...
... interior layers to the photosphere is mostly by convection. Convection occurs because the opacity of this layer is higher than the layer below. The Radiation Zone extends from about .25R to 0.8R. In this region energy transport from the core is mostly by radiation. This is because the opacity in t ...
Feb 2017 - Astronomical Society of Northern New England
... summer because the earth is now near its closest to the sun on its slightly elliptical orbit and therefor moving a little faster than in summer. Our average speed around the sun is 18.6 miles per second or about 67,000 mph. At that speed you could get all the way out to California in just under 3 mi ...
... summer because the earth is now near its closest to the sun on its slightly elliptical orbit and therefor moving a little faster than in summer. Our average speed around the sun is 18.6 miles per second or about 67,000 mph. At that speed you could get all the way out to California in just under 3 mi ...
The Planets
... The most prominent feature of Saturn is its system of rings. Features of Saturn • Saturn’s atmosphere is very active, with winds roaring at up to 1500 kilometers per hour. • Large cyclonic “storms” similar to Jupiter’s Great Red Spot, although smaller, occur in Saturn’s ...
... The most prominent feature of Saturn is its system of rings. Features of Saturn • Saturn’s atmosphere is very active, with winds roaring at up to 1500 kilometers per hour. • Large cyclonic “storms” similar to Jupiter’s Great Red Spot, although smaller, occur in Saturn’s ...
Earth, Moon, and Sky - Wayne State University
... Mean solar time is based on the average value of the solar day over the course of the year A mean solar day contains exactly 24 hours and is what we use in everyday time-keeping It is inconvenient for practical purposes because it is determined by the position of the Sun Noon occurs when the Sun is ...
... Mean solar time is based on the average value of the solar day over the course of the year A mean solar day contains exactly 24 hours and is what we use in everyday time-keeping It is inconvenient for practical purposes because it is determined by the position of the Sun Noon occurs when the Sun is ...
Sample pages 1 PDF
... allow scientists a direct look into the chemical composition of the asteroid and establish the asteroid origin of some of the meteorites collected on Earth. How small can an asteroid be? There is no clear definition on the minimum size of an asteroid. We do know that solid debris of all sizes are pr ...
... allow scientists a direct look into the chemical composition of the asteroid and establish the asteroid origin of some of the meteorites collected on Earth. How small can an asteroid be? There is no clear definition on the minimum size of an asteroid. We do know that solid debris of all sizes are pr ...
Milky Way - Wayne Hu`s Tutorials
... Common tools: flux and surface brightness, angular mapping, number counts • Inferences on the dynamical nature of the systems by using physical laws to interpret observations: e.g. distance from inverse square law, mass from Newtonian dynamics • Astrophysical units, while bizarre to a physicist, tea ...
... Common tools: flux and surface brightness, angular mapping, number counts • Inferences on the dynamical nature of the systems by using physical laws to interpret observations: e.g. distance from inverse square law, mass from Newtonian dynamics • Astrophysical units, while bizarre to a physicist, tea ...
Astronomy 242: Review Questions #1 Distributed: February 10
... (a) Sketch a diagram of the energy levels of hydrogen, labeling each level by the quantum number n. Then identify the transitions which emit or absorb visible photons. (b) To ionize a hydrogen atom takes an energy of χ = 13.6 eV = 2.18 × 10−18 kg m2 s−2 . At what temperature is the kinetic energy of ...
... (a) Sketch a diagram of the energy levels of hydrogen, labeling each level by the quantum number n. Then identify the transitions which emit or absorb visible photons. (b) To ionize a hydrogen atom takes an energy of χ = 13.6 eV = 2.18 × 10−18 kg m2 s−2 . At what temperature is the kinetic energy of ...
THE SOLAR SYSTEM
... Jovian). Pluto is considered by many astronomers to no longer be a planet, since there are now several known objects in orbits similar to Pluto's and of similar size - these are believed to be members of the Kuiper-belt. In addition to the major planets, there are a large number of moons, asteroids, ...
... Jovian). Pluto is considered by many astronomers to no longer be a planet, since there are now several known objects in orbits similar to Pluto's and of similar size - these are believed to be members of the Kuiper-belt. In addition to the major planets, there are a large number of moons, asteroids, ...
AGN-Hubble
... That’s because if you know how fast we are expanding, you can run the movie backwards and see when everything crunches together. If the Universe is slowing its expansion, you get a younger age. You can compare the age gotten this way with the oldest globular ...
... That’s because if you know how fast we are expanding, you can run the movie backwards and see when everything crunches together. If the Universe is slowing its expansion, you get a younger age. You can compare the age gotten this way with the oldest globular ...
Physics: Principle and Applications, 7e (Giancoli) Chapter 33
... 5) A star has absolute luminosity equal to that of the sun but is 10 pc away from the Earth. By what factor will it appear dimmer than the sun? The earth is 1.5 × 108 km from the sun, and 1 parsec is equal to 3.09 × 1016 m. A) 2 × 10-9 B) 2 × 10-11 C) 2 × 10-13 D) 2 × 10-15 Answer: C Var: 1 6) The ...
... 5) A star has absolute luminosity equal to that of the sun but is 10 pc away from the Earth. By what factor will it appear dimmer than the sun? The earth is 1.5 × 108 km from the sun, and 1 parsec is equal to 3.09 × 1016 m. A) 2 × 10-9 B) 2 × 10-11 C) 2 × 10-13 D) 2 × 10-15 Answer: C Var: 1 6) The ...
Low-budget satellite tracking system for highly elliptical orbits
... well as horizontal direction. In case of DL0AMD we used scaffolding poles and clamps to insure that necessary flexibility. The next task is now to give the rotor an orientation that is in parallel to the Earth axis. As a first step, the rotor has to be turned until the tip of the axis points to the ...
... well as horizontal direction. In case of DL0AMD we used scaffolding poles and clamps to insure that necessary flexibility. The next task is now to give the rotor an orientation that is in parallel to the Earth axis. As a first step, the rotor has to be turned until the tip of the axis points to the ...