IV International Astronomy Olympiad
... diameter in the objective focal plane if its focal length is 254 cm and the objective diameter is 40 cm? Draw a figure (a few figures) to explain your calculations. 2. A photometer is mounted on a 125 cm (focal length) telescope. Can you observe a star with magnitude a. 5m b. 10m c. 15m in a cluster ...
... diameter in the objective focal plane if its focal length is 254 cm and the objective diameter is 40 cm? Draw a figure (a few figures) to explain your calculations. 2. A photometer is mounted on a 125 cm (focal length) telescope. Can you observe a star with magnitude a. 5m b. 10m c. 15m in a cluster ...
Quick Reference - Objects in the skies
... These are patterns formed by prominent stars within apparent proximity to one another on Earth's night sky. There are 88 standard constellations recognized by the International Astronomical Union (IAU) since 1922. The majority of these go back to the 48 constellations defined by Ptolemy in his Almag ...
... These are patterns formed by prominent stars within apparent proximity to one another on Earth's night sky. There are 88 standard constellations recognized by the International Astronomical Union (IAU) since 1922. The majority of these go back to the 48 constellations defined by Ptolemy in his Almag ...
planets orbit around Sun.
... Kepler, using Brahe's detailed observations, realized that the planets moved around the sun not in circles but in stretched out circles known as ellipses. However, the problem took him almost a decade to solve, and Kepler didn't publish it until well after Brahe's death. Although Brahe's family inte ...
... Kepler, using Brahe's detailed observations, realized that the planets moved around the sun not in circles but in stretched out circles known as ellipses. However, the problem took him almost a decade to solve, and Kepler didn't publish it until well after Brahe's death. Although Brahe's family inte ...
Scaling the SEM reading
... approximately 4.5 billion years ago. The debris from that collision was thrown out into space, and that debris eventually joined together to form the Moon. The newly formed Moon traveled at just the right speed so that it remained within the control of Earth’s gravitational field. Now the Moon is Ea ...
... approximately 4.5 billion years ago. The debris from that collision was thrown out into space, and that debris eventually joined together to form the Moon. The newly formed Moon traveled at just the right speed so that it remained within the control of Earth’s gravitational field. Now the Moon is Ea ...
Quiz Questions
... 3. We feel sure that the sun is now fueled by nuclear energy rather than by energy left over from its gravitational contraction because A. we don't see the sun contracting B. the spectrum looks like nuclear production C. the energy from gravitational contraction can't last long enough D. we see heli ...
... 3. We feel sure that the sun is now fueled by nuclear energy rather than by energy left over from its gravitational contraction because A. we don't see the sun contracting B. the spectrum looks like nuclear production C. the energy from gravitational contraction can't last long enough D. we see heli ...
Slide 1
... •The sun, Earth and its moon are spherical objects that move in two ways: They spin (rotate) and they change positions relative to each other (revolve). •Places on the earth experience seasons, providing evidence that the earth is revolving around the sun. •The sun is a star that produces light that ...
... •The sun, Earth and its moon are spherical objects that move in two ways: They spin (rotate) and they change positions relative to each other (revolve). •Places on the earth experience seasons, providing evidence that the earth is revolving around the sun. •The sun is a star that produces light that ...
Planet Powerpoint
... huge storm of swirling gas that has lasted for hundreds of years. Jupiter does not have a solid surface. The planet is a ball of liquid surrounded by gas. ...
... huge storm of swirling gas that has lasted for hundreds of years. Jupiter does not have a solid surface. The planet is a ball of liquid surrounded by gas. ...
The Motions of Celestial Bodies, and Newton`s Laws of Motion
... 2. As a planet moves around it’s orbit, it sweeps out equal areas in equal times. ...
... 2. As a planet moves around it’s orbit, it sweeps out equal areas in equal times. ...
Minor Members of the Solar System
... 23.4 Minor Members of the Solar System Asteroids: Microplanets An asteroid is a small, rocky body whose diameter can range from a few hundred kilometers to less than a kilometer. Most asteroids lie between the orbits of Mars and Jupiter. They have orbital periods of three to six years. ...
... 23.4 Minor Members of the Solar System Asteroids: Microplanets An asteroid is a small, rocky body whose diameter can range from a few hundred kilometers to less than a kilometer. Most asteroids lie between the orbits of Mars and Jupiter. They have orbital periods of three to six years. ...
The New Cosmology: Our Expanding Universe
... and ideological reasons, the problem was that every movement could be explained by means of epi-circles, depending on how big one made the circle and how many of them one invented to do the job. Copernicus realized that placing the sun in the center of the universe, and the planets orbiting this cen ...
... and ideological reasons, the problem was that every movement could be explained by means of epi-circles, depending on how big one made the circle and how many of them one invented to do the job. Copernicus realized that placing the sun in the center of the universe, and the planets orbiting this cen ...
The New Cosmology: Our Expanding Universe
... and ideological reasons, the problem was that every movement could be explained by means of epi-circles, depending on how big one made the circle and how many of them one invented to do the job. Copernicus realized that placing the sun in the center of the universe, and the planets orbiting this cen ...
... and ideological reasons, the problem was that every movement could be explained by means of epi-circles, depending on how big one made the circle and how many of them one invented to do the job. Copernicus realized that placing the sun in the center of the universe, and the planets orbiting this cen ...
Star clusters and constellations
... Star clusters are groups of stars that are ‘connected’ by a significant gravitational force ands move around tougher as the galaxy rotates. The motion of the Sun through the galaxy does not affect the appearance of a star cluster from Earth over a long period of time. Examples of star clusters are t ...
... Star clusters are groups of stars that are ‘connected’ by a significant gravitational force ands move around tougher as the galaxy rotates. The motion of the Sun through the galaxy does not affect the appearance of a star cluster from Earth over a long period of time. Examples of star clusters are t ...
PowerPoint Presentation - Planetary Configurations
... Interaction of Matter and Light • Absorption: Occurs when a photon of the correct energy moves an electron from a lower orbit to an upper orbit. • Emission: Occurs when an electron drops from an upper orbit to a lower one, thereby ejecting a photon of corresponding energy • Ionization: Occurs when ...
... Interaction of Matter and Light • Absorption: Occurs when a photon of the correct energy moves an electron from a lower orbit to an upper orbit. • Emission: Occurs when an electron drops from an upper orbit to a lower one, thereby ejecting a photon of corresponding energy • Ionization: Occurs when ...
Article - Iowa State University
... moon Charon remains a moon. The IAU lists at least a dozen more solar bodies that could fall into the dwarf planet category in the coming months and years. Kerton says that although Pluto’s status seems like a demotion, it shouldn’t. “The language of Pluto being demoted and losing its status is only ...
... moon Charon remains a moon. The IAU lists at least a dozen more solar bodies that could fall into the dwarf planet category in the coming months and years. Kerton says that although Pluto’s status seems like a demotion, it shouldn’t. “The language of Pluto being demoted and losing its status is only ...
Application Exercise: Distances to Stars Using Measured Parallax
... four basic methods of determining distances: radar, parallax, standard candles, and the Hubble Law. Each of these methods is most useful at certain distances, with radar being useful nearby (e.g., the Moon), the Hubble Law being useful at the farthest distance (e.g., galaxies far, far away). In this ...
... four basic methods of determining distances: radar, parallax, standard candles, and the Hubble Law. Each of these methods is most useful at certain distances, with radar being useful nearby (e.g., the Moon), the Hubble Law being useful at the farthest distance (e.g., galaxies far, far away). In this ...
The Parsec
... small angle, just below Star A, formed by the two longest sides of this triangle is called the parallax angle for Star A. Label this angle “pA.” Knowing a star’s parallax angle allows us to calculate the distance to the star. Since even the nearest stars are still very far away, parallax angles are ...
... small angle, just below Star A, formed by the two longest sides of this triangle is called the parallax angle for Star A. Label this angle “pA.” Knowing a star’s parallax angle allows us to calculate the distance to the star. Since even the nearest stars are still very far away, parallax angles are ...
The Sun`s Exterior
... Above the chromosphere is the corona, the faint halo visible around the Sun during an eclipse. The corona is extremely hot: 1 million Kelvin. But it is also very low density. It does not produce much light of its own, but scatters sunlight very strongly. (Image credit: Fred Espenak) ...
... Above the chromosphere is the corona, the faint halo visible around the Sun during an eclipse. The corona is extremely hot: 1 million Kelvin. But it is also very low density. It does not produce much light of its own, but scatters sunlight very strongly. (Image credit: Fred Espenak) ...
