DAY AND NIGHT, SEASONS
... They should then go on to model the two types of exoplanet described on their worksheet and discuss them in the same terms as above. They should consider the possibilities for life in these alien worlds. (‘Life’ could mean humanlike creatures, or organisms like bacteria which are more capable of liv ...
... They should then go on to model the two types of exoplanet described on their worksheet and discuss them in the same terms as above. They should consider the possibilities for life in these alien worlds. (‘Life’ could mean humanlike creatures, or organisms like bacteria which are more capable of liv ...
February - Fort Worth Astronomical Society
... water, ammonia, methane, and is thought to have a rocky core. It has an axis tilt of 26.7 degrees and an orbital period of 29.46 years. The tilt is good as it gives us a good view of the rings when at their extreme to us. The 2 images of Saturn were taken with a quickcam VC and an LX200 at different ...
... water, ammonia, methane, and is thought to have a rocky core. It has an axis tilt of 26.7 degrees and an orbital period of 29.46 years. The tilt is good as it gives us a good view of the rings when at their extreme to us. The 2 images of Saturn were taken with a quickcam VC and an LX200 at different ...
ORBITAL MOTION
... 1. Intro: Star formation is on-going. What is the origin of our solar system? Descartes, Kant, Laplace: vortices, nebular hypothesis: importance of angular momentum. ...
... 1. Intro: Star formation is on-going. What is the origin of our solar system? Descartes, Kant, Laplace: vortices, nebular hypothesis: importance of angular momentum. ...
Time
... place in reference to the horizon these civilizations new a year had past. Some civilizations used lunar cycles occurred, while others based it on our revolution around the sun. ...
... place in reference to the horizon these civilizations new a year had past. Some civilizations used lunar cycles occurred, while others based it on our revolution around the sun. ...
Life in the galactic danger zone
... of stars there is greater. However, he disagrees that high metallicity environments always allow hot jupiters to run rampant. “In contrast to Lineweaver, we used the results of radial velocity planet searches in combination with a model of planet formation in the literature to determine where habita ...
... of stars there is greater. However, he disagrees that high metallicity environments always allow hot jupiters to run rampant. “In contrast to Lineweaver, we used the results of radial velocity planet searches in combination with a model of planet formation in the literature to determine where habita ...
but restricted to nearby large stars
... heating the material in ways that scientists still don't fully ...
... heating the material in ways that scientists still don't fully ...
Unit 6: Astronomy
... Using his powerful telescope, Galileo’s curiosity now turned skyward. He discovered craters on the moon, sunspots, Jupiter’s four largest moons, and the phases of Venus. His observations led him to conclude that Earth could not possibly be the center of the universe, as had been commonly accepted si ...
... Using his powerful telescope, Galileo’s curiosity now turned skyward. He discovered craters on the moon, sunspots, Jupiter’s four largest moons, and the phases of Venus. His observations led him to conclude that Earth could not possibly be the center of the universe, as had been commonly accepted si ...
Chapter 29: Stars - Mr. Pelton Science
... central region of a red giant. • Hydrogen still fuses into helium in a thin shell which forces the outer layers of the star to expand and cool. ...
... central region of a red giant. • Hydrogen still fuses into helium in a thin shell which forces the outer layers of the star to expand and cool. ...
arXiv:0712.2297v1 [astro
... 20 m s−1 . Furthermore, the RV scatter increases with B-V, easily reaching 100 m s−1 for stars later than K5. Clearly, more observations are needed to understand the nature of the scatter, part of which may be contributed by short-period pulsations, which remain unresolved by the sparse sampling of ...
... 20 m s−1 . Furthermore, the RV scatter increases with B-V, easily reaching 100 m s−1 for stars later than K5. Clearly, more observations are needed to understand the nature of the scatter, part of which may be contributed by short-period pulsations, which remain unresolved by the sparse sampling of ...
The Geographic Position of a Celestial Body
... The Greenwich hour angle of the imaginary mean vernal equinox of date (traveling along the celestial equator at a constant rate) defines Greenwich Mean Sidereal Time, GMST. The difference to GMST is called equation of the equinoxes, EQ, or nutation in right ascension. EQ can be predicted precisely. ...
... The Greenwich hour angle of the imaginary mean vernal equinox of date (traveling along the celestial equator at a constant rate) defines Greenwich Mean Sidereal Time, GMST. The difference to GMST is called equation of the equinoxes, EQ, or nutation in right ascension. EQ can be predicted precisely. ...
PHYS 390 Lecture 3
... If one can determine the luminosity of a star WITHOUT knowing d, then a measurement of the flux F on Earth can be inverted to find d. That is: (i) extract L from some observable characteristic of the star (ii) measure F on Earth (iii) use F = L / 4πd2 to solve for d. The problem with this approach i ...
... If one can determine the luminosity of a star WITHOUT knowing d, then a measurement of the flux F on Earth can be inverted to find d. That is: (i) extract L from some observable characteristic of the star (ii) measure F on Earth (iii) use F = L / 4πd2 to solve for d. The problem with this approach i ...
Transit surveys for Earths in the habitable zones of white dwarfs
... of transiting planets. I have simulated an all-sky survey with a worldwide network of 1 m aperture telescopes to monitor the white dwarf CHZ (typically 32 hr, during which telescopes distributed in longitude follow a single star) following Nutzman & Charbonneau (2008) to compute the telescope sensit ...
... of transiting planets. I have simulated an all-sky survey with a worldwide network of 1 m aperture telescopes to monitor the white dwarf CHZ (typically 32 hr, during which telescopes distributed in longitude follow a single star) following Nutzman & Charbonneau (2008) to compute the telescope sensit ...
Sponge: What two factors cause the seasons on Earth?
... Earth. The sun appears as a ring around the moon in its new moon phase. ...
... Earth. The sun appears as a ring around the moon in its new moon phase. ...
Astronomy Powerpoint - Worth County Schools
... Light travels about 300,000 km a second. The sun is about 150,000,000 km from Earth. About how long does light take to travel from the sun to Earth? ...
... Light travels about 300,000 km a second. The sun is about 150,000,000 km from Earth. About how long does light take to travel from the sun to Earth? ...
Lecture 39: The Drake Equation
... A shamelessly optimistic guess… N = 100 Billion stars fp = 0.5 ne = 1 fl =1 fi =0.1 fc =1 L =100 years (we made it this far … so far …) Age = 10 billion years ...
... A shamelessly optimistic guess… N = 100 Billion stars fp = 0.5 ne = 1 fl =1 fi =0.1 fc =1 L =100 years (we made it this far … so far …) Age = 10 billion years ...
Sun, Earth, and Moon
... What causes day & night? Which one is bigger the earth or the moon? Where does the moon get its light from? What percent of the earth is always lit by the sun? How many stars are in our solar system? How many days does it take for the Earth to revolve around the sun? • How many low and high tides on ...
... What causes day & night? Which one is bigger the earth or the moon? Where does the moon get its light from? What percent of the earth is always lit by the sun? How many stars are in our solar system? How many days does it take for the Earth to revolve around the sun? • How many low and high tides on ...
Document
... Many Greek thinkers worried about the movement of stars and planets. The most prominent among them was Eudoxus (410–355 bc, or 408–347 bc). He belonged to Plato’s academy in Athens. Deeply influenced by Plato’s appeal for perfect geometrical forms (sphere, regular solids and so on), Eudoxus proposed ...
... Many Greek thinkers worried about the movement of stars and planets. The most prominent among them was Eudoxus (410–355 bc, or 408–347 bc). He belonged to Plato’s academy in Athens. Deeply influenced by Plato’s appeal for perfect geometrical forms (sphere, regular solids and so on), Eudoxus proposed ...
Galileo Galilei (1564-1642) - Sunshine Coast Centre RASC
... Flandro, a summer student at JPL, realised that a rare alignment of planets on one side of the sun, would occur in the late 1970s. ► This would provide an opportunity to allow a single spacecraft to explore the outer planets of the solar system, taking advantage of “gravitational assist”. ► The orig ...
... Flandro, a summer student at JPL, realised that a rare alignment of planets on one side of the sun, would occur in the late 1970s. ► This would provide an opportunity to allow a single spacecraft to explore the outer planets of the solar system, taking advantage of “gravitational assist”. ► The orig ...
Solutions to End-of-Chapter Problems (Chapter 2)
... When covering the causes of eclipses, it helps to demonstrate the Moon’s orbit. Keep a model “Sun” on a table in the center of the lecture area; have your left fist represent Earth, and hold a ball in the other hand to represent the Moon. Then you can show how the Moon orbits your “fist” at an incli ...
... When covering the causes of eclipses, it helps to demonstrate the Moon’s orbit. Keep a model “Sun” on a table in the center of the lecture area; have your left fist represent Earth, and hold a ball in the other hand to represent the Moon. Then you can show how the Moon orbits your “fist” at an incli ...
Motions of Earth, the Moon, and Planets
... that we see different amounts of the lit side as the Moon orbits Earth. Over a period of about 4 weeks, the amount of the illuminated surface of the Moon we see (called phases) follows a predictable pattern. The eight phases of the Moon that we see over this period of time make up the lunar cycle (F ...
... that we see different amounts of the lit side as the Moon orbits Earth. Over a period of about 4 weeks, the amount of the illuminated surface of the Moon we see (called phases) follows a predictable pattern. The eight phases of the Moon that we see over this period of time make up the lunar cycle (F ...
Chapter 9
... • All planetary rings lie near their planet’s Roche limit • Existence of side-by-side ringlets of different compositions indicates rings supplied by varied comets and asteroids ...
... • All planetary rings lie near their planet’s Roche limit • Existence of side-by-side ringlets of different compositions indicates rings supplied by varied comets and asteroids ...
Lab #5 (Feb 27
... exercise will ask you to determine the length of a sidereal day on the Moon, and we will also determine the length of a solar day. Just as a sidereal day is the amount of time it takes for a star to return to the meridian, the solar day is the amount of time it takes for the sun to return to the mer ...
... exercise will ask you to determine the length of a sidereal day on the Moon, and we will also determine the length of a solar day. Just as a sidereal day is the amount of time it takes for a star to return to the meridian, the solar day is the amount of time it takes for the sun to return to the mer ...
PDF version (two pages, including the full text)
... Southern Cross and the Pointers (Alpha and Beta Centauri). Alpha Centauri is a triple system, with two sun like stars orbiting each other every 80 years and a dim red dwarf tagging along at a much larger distance. This star was discovered by Robert Innes at the Union Observatory in Johannesburg in 1 ...
... Southern Cross and the Pointers (Alpha and Beta Centauri). Alpha Centauri is a triple system, with two sun like stars orbiting each other every 80 years and a dim red dwarf tagging along at a much larger distance. This star was discovered by Robert Innes at the Union Observatory in Johannesburg in 1 ...
Pluto and the Dwarfs - Rappahannock Astronomy Club
... Later astronomers find Pluto in photographs Lowell's staff took before his death. Lowell looked at it, but did not recognize it. ...
... Later astronomers find Pluto in photographs Lowell's staff took before his death. Lowell looked at it, but did not recognize it. ...
Orrery
An orrery is a mechanical model of the solar system that illustrates or predicts the relative positions and motions of the planets and moons, usually according to the heliocentric model. It may also represent the relative sizes of these bodies; but since accurate scaling is often not practical due to the actual large ratio differences, a subdued approximation may be used instead. Though the Greeks had working planetaria, the first orrery that was a planetarium of the modern era was produced in 1704, and one was presented to Charles Boyle, 4th Earl of Orrery — whence came the name. They are typically driven by a clockwork mechanism with a globe representing the Sun at the centre, and with a planet at the end of each of the arms.