View District Syllabus - Tarrant County College
... identifying stars and constellations; b. explaining celestial coordinates; c. defining astronomical unit; d. defining the terms parsec and light year; e. explaining the scientific method. ...
... identifying stars and constellations; b. explaining celestial coordinates; c. defining astronomical unit; d. defining the terms parsec and light year; e. explaining the scientific method. ...
The Solar System
... Figure 1.7 shows the relative sizes of the orbits of the planets, asteroid belt, and Kuiper belt. In general, the farther away from the Sun, the greater the distance from one planet’s orbit to the next. The orbits of the planets are not circular but slightly elliptical, with the Sun located at one o ...
... Figure 1.7 shows the relative sizes of the orbits of the planets, asteroid belt, and Kuiper belt. In general, the farther away from the Sun, the greater the distance from one planet’s orbit to the next. The orbits of the planets are not circular but slightly elliptical, with the Sun located at one o ...
Asteroids
... elliptical solar orbit, where it may eventually approach the Sun (and near the Sun, the characteristic comet tail is visible). The Discovery of the Kuiper Belt The Kuiper belt was discovered in 1992. The Kuiper belt was named for the Dutch-American astronomer Gerard P. Kuiper, who predicted its exis ...
... elliptical solar orbit, where it may eventually approach the Sun (and near the Sun, the characteristic comet tail is visible). The Discovery of the Kuiper Belt The Kuiper belt was discovered in 1992. The Kuiper belt was named for the Dutch-American astronomer Gerard P. Kuiper, who predicted its exis ...
Potential for Life on the Terrestrial Planets
... and Earth. From this method the mass of the exoplanet and its semi-major axis can be determined. So far 14 exoplanets have been discovered with the gravitational microlensing method. The disadvantage of this method is that, in general, follow -up observations are not possible. It should be noted tha ...
... and Earth. From this method the mass of the exoplanet and its semi-major axis can be determined. So far 14 exoplanets have been discovered with the gravitational microlensing method. The disadvantage of this method is that, in general, follow -up observations are not possible. It should be noted tha ...
ACTIVITIES for Grades 3-5 (Continued)
... • What kinds of energy does the Sun provide for Earth? Answers may include: The Sun provides heat and light. Plants capture this energy through the process of photosynthesis, create sugars and starches, and store them for later use. • Where do a plant, a grasshopper, a chicken, and a human get their ...
... • What kinds of energy does the Sun provide for Earth? Answers may include: The Sun provides heat and light. Plants capture this energy through the process of photosynthesis, create sugars and starches, and store them for later use. • Where do a plant, a grasshopper, a chicken, and a human get their ...
Astro101 lecture from Aug 27
... four elements of the world (believed to be fire, water, air, and earth) but rather of an entirely different element called quintessence (=fifth element), which was also perfect. ...
... four elements of the world (believed to be fire, water, air, and earth) but rather of an entirely different element called quintessence (=fifth element), which was also perfect. ...
Migration of giant planets in planetesimal discs
... Planets orbiting a planetesimal circumstellar disc can migrate inward from their initial positions because of dynamical friction between planets and planetesimals. The migration rate depends on the disc mass and on its time evolution. Planets that are embedded in longlived planetesimal discs, having ...
... Planets orbiting a planetesimal circumstellar disc can migrate inward from their initial positions because of dynamical friction between planets and planetesimals. The migration rate depends on the disc mass and on its time evolution. Planets that are embedded in longlived planetesimal discs, having ...
Constellations appear to move across the sky at night because
... showed Earth could orbit the Sun and not lose its moon, too. ...
... showed Earth could orbit the Sun and not lose its moon, too. ...
The Solar System The Solar System
... There are billions of stars, but one is special to us. It took thousands of years for scientists to realize that the sun is a star. Because the sun is so close to us, it is very bright. As you see in Figure 1, our atmosphere scatters the sun’s light and makes the daytime sky so bright that we can’t ...
... There are billions of stars, but one is special to us. It took thousands of years for scientists to realize that the sun is a star. Because the sun is so close to us, it is very bright. As you see in Figure 1, our atmosphere scatters the sun’s light and makes the daytime sky so bright that we can’t ...
Uranus and Neptune
... Discovery of Uranus & Neptune • Uranus: by chance – had been mapped many times as a star. William Herschel observed it through a telescope in 1781 – recognized it was a planet – fuzzy, and moved with respect to the background stars • Neptune: scientific prediction - Uranus’s orbit was not a perfe ...
... Discovery of Uranus & Neptune • Uranus: by chance – had been mapped many times as a star. William Herschel observed it through a telescope in 1781 – recognized it was a planet – fuzzy, and moved with respect to the background stars • Neptune: scientific prediction - Uranus’s orbit was not a perfe ...
Draft Science Cases for KPAO
... coronographs. Being critically sampled is crucial and with 120nm rms error, the Strehl ratio will be 0.89 at K band, 0.81 at H band and 0.70 at J band (see Figure 2: Predicted KPAO Strehlfor different rms wavefront error goals.). Assuming a NIR imager extends down to 1 micron, then the required pixe ...
... coronographs. Being critically sampled is crucial and with 120nm rms error, the Strehl ratio will be 0.89 at K band, 0.81 at H band and 0.70 at J band (see Figure 2: Predicted KPAO Strehlfor different rms wavefront error goals.). Assuming a NIR imager extends down to 1 micron, then the required pixe ...
File - peter ditchon velarde
... Mars has a striking red appearance, and in its most favorable position for viewing, when it is opposite the sun, it is twice as bright as Sirius, the brightest star. Mars has a diameter of 4,200 mi (6,800 km), just over half the diameter of the earth, and its mass is only 11% of the earth's mass. Th ...
... Mars has a striking red appearance, and in its most favorable position for viewing, when it is opposite the sun, it is twice as bright as Sirius, the brightest star. Mars has a diameter of 4,200 mi (6,800 km), just over half the diameter of the earth, and its mass is only 11% of the earth's mass. Th ...
The star Betelgeuse is about 500 light years away from us. If this star
... a) Procyon is moving at the same speed as Acrux b) Procyon is moving more slowly than Acrux c) Procyon and Acrux are BOTH moving away from the Sun d) both b & c e) none of the above Which of the following is NOT an implication of Hubble's law? a) the Universe is expanding b) we are at the center of ...
... a) Procyon is moving at the same speed as Acrux b) Procyon is moving more slowly than Acrux c) Procyon and Acrux are BOTH moving away from the Sun d) both b & c e) none of the above Which of the following is NOT an implication of Hubble's law? a) the Universe is expanding b) we are at the center of ...
Lab_Starry_Night
... Find the moon. You could turn off the daylight, under Sky. When you get the pointer near the moon it should change to an arrow. When it does, right click on it, then click on Info Window. D. What percentage of the moon is illuminated? E. What is the distance of the moon from the earth? Optional: If ...
... Find the moon. You could turn off the daylight, under Sky. When you get the pointer near the moon it should change to an arrow. When it does, right click on it, then click on Info Window. D. What percentage of the moon is illuminated? E. What is the distance of the moon from the earth? Optional: If ...
Dec 2016 - Astronomical Society of Northern New England
... powerful jets erupting from the star. Using the Hubble Space Telescope, astronomers discovered blobs of plasma that could form some of these lobes. "We're quite excited about this," says Raghvendra Sahai, an astronomer at NASA's Jet Propulsion Laboratory. "Nobody has really been able to come up with ...
... powerful jets erupting from the star. Using the Hubble Space Telescope, astronomers discovered blobs of plasma that could form some of these lobes. "We're quite excited about this," says Raghvendra Sahai, an astronomer at NASA's Jet Propulsion Laboratory. "Nobody has really been able to come up with ...
White dwarfs that crossed the Chandrasekhar limit
... dwarf. Chandrasekhar estimated that, as long as the end stage of a less massive star resulting from a planetary nebula is less than 1.44 times the mass of the Sun [M], it survives as a faintly visible white dwarf (Box 1). However, consider a situation where a white dwarf (with mass less than 1.44 M ...
... dwarf. Chandrasekhar estimated that, as long as the end stage of a less massive star resulting from a planetary nebula is less than 1.44 times the mass of the Sun [M], it survives as a faintly visible white dwarf (Box 1). However, consider a situation where a white dwarf (with mass less than 1.44 M ...
Exploring Solar Systems Across the Universe
... discovered to date have not been seen directly in images taken with a telescope; instead, a variety of methods have been used to detect them indirectly. Detecting Extrasolar Planets via Stellar Wobble Two indirect extrasolar planet discovery methods are based on detecting the small gravitational tug ...
... discovered to date have not been seen directly in images taken with a telescope; instead, a variety of methods have been used to detect them indirectly. Detecting Extrasolar Planets via Stellar Wobble Two indirect extrasolar planet discovery methods are based on detecting the small gravitational tug ...
Collisions with Comets and Asteroids
... deal of matter was thrown outward, beyond the orbits of Uranus and Neptune. Coalescing far from the sun, the comets were born cold, at temperatures as low as Ð260 degrees Celsius. They retained their volatile materials, the gas, ice and snow. Sometimes called dirty snowballs, these objects are usual ...
... deal of matter was thrown outward, beyond the orbits of Uranus and Neptune. Coalescing far from the sun, the comets were born cold, at temperatures as low as Ð260 degrees Celsius. They retained their volatile materials, the gas, ice and snow. Sometimes called dirty snowballs, these objects are usual ...
Comet/asteroid Orbit Determination and Ephemeris Software
... – cometary thrusting (if applicable) – solar radiation pressure – solar oblateness – gravitational perturbations (including relativistic terms) from the Sun, nine planets, Earth's Moon, and up to 300 asteroids Refines an – initial two-body orbit – imported orbit (MPCORBcr file) – user-specified orbi ...
... – cometary thrusting (if applicable) – solar radiation pressure – solar oblateness – gravitational perturbations (including relativistic terms) from the Sun, nine planets, Earth's Moon, and up to 300 asteroids Refines an – initial two-body orbit – imported orbit (MPCORBcr file) – user-specified orbi ...
Comet - Physics
... • Usually they will start with an orbit which takes them to the gas giant region. Here the objects will be called Centaurs. • Eventually these Centaurs will have a close encounter with a gas giant (don’t worry Jupiter, I ...
... • Usually they will start with an orbit which takes them to the gas giant region. Here the objects will be called Centaurs. • Eventually these Centaurs will have a close encounter with a gas giant (don’t worry Jupiter, I ...
The universe and our planet
... The structure of the solar system The solar system was formed approximately 4.5 billion years ago from a nebula composed of gas and dust. It is divided into two parts: the inner solar system extends from the Sun to Neptune, and the outer solar system lies beyond Neptune. The solar system also consis ...
... The structure of the solar system The solar system was formed approximately 4.5 billion years ago from a nebula composed of gas and dust. It is divided into two parts: the inner solar system extends from the Sun to Neptune, and the outer solar system lies beyond Neptune. The solar system also consis ...
12 Comets, Kuiper Belt Objects, and Pluto
... rays, provide insight about the nature of magnetization. Spacecraft measurements have detected the presence of a bow shock that marks the interaction of the magnetic field and solar wind. In the plasma tail fields of opposite polarity meet, forming a current sheet. Occasionally, the ion tail is obse ...
... rays, provide insight about the nature of magnetization. Spacecraft measurements have detected the presence of a bow shock that marks the interaction of the magnetic field and solar wind. In the plasma tail fields of opposite polarity meet, forming a current sheet. Occasionally, the ion tail is obse ...
Chapter 20 - apel slice
... Several points of light seemed to wander slowly among the stars. The Greeks called these objects planets, from the Greek word meaning "wanderers:" The Greeks made careful observations of the motions of the planets that they could see. You know these planets by the names the ancient Romans later gave ...
... Several points of light seemed to wander slowly among the stars. The Greeks called these objects planets, from the Greek word meaning "wanderers:" The Greeks made careful observations of the motions of the planets that they could see. You know these planets by the names the ancient Romans later gave ...
Definition of planet
The definition of planet, since the word was coined by the ancient Greeks, has included within its scope a wide range of celestial bodies. Greek astronomers employed the term asteres planetai (ἀστέρες πλανῆται), ""wandering stars"", for star-like objects which apparently moved over the sky. Over the millennia, the term has included a variety of different objects, from the Sun and the Moon to satellites and asteroids.By the end of the 19th century the word planet, though it had yet to be defined, had become a working term applied only to a small set of objects in the Solar System. After 1992, however, astronomers began to discover many additional objects beyond the orbit of Neptune, as well as hundreds of objects orbiting other stars. These discoveries not only increased the number of potential planets, but also expanded their variety and peculiarity. Some were nearly large enough to be stars, while others were smaller than Earth's moon. These discoveries challenged long-perceived notions of what a planet could be.The issue of a clear definition for planet came to a head in 2005 with the discovery of the trans-Neptunian object Eris, a body more massive than the smallest then-accepted planet, Pluto. In its 2006 response, the International Astronomical Union (IAU), recognised by astronomers as the world body responsible for resolving issues of nomenclature, released its decision on the matter. This definition, which applies only to the Solar System, states that a planet is a body that orbits the Sun, is massive enough for its own gravity to make it round, and has ""cleared its neighbourhood"" of smaller objects around its orbit. Under this new definition, Pluto and the other trans-Neptunian objects do not qualify as planets. The IAU's decision has not resolved all controversies, and while many scientists have accepted the definition, some in the astronomical community have rejected it outright.