L3-January 15/08
... 20 January... not visible from Waterloo but Mars will be very close to the Moon Jupiter: not visible Saturn: rises at 10pm ...
... 20 January... not visible from Waterloo but Mars will be very close to the Moon Jupiter: not visible Saturn: rises at 10pm ...
PDF format - Princeton University Press
... work to be done with the rising or setting of certain stars. Both Homer and Hesiod agree upon the fact that the earth is a circular disk surrounded by the river Oceanus. Over the flat earth is the vault of heaven; below the earth is Tartarus, the realm of the underworld. The vault of heaven remains ...
... work to be done with the rising or setting of certain stars. Both Homer and Hesiod agree upon the fact that the earth is a circular disk surrounded by the river Oceanus. Over the flat earth is the vault of heaven; below the earth is Tartarus, the realm of the underworld. The vault of heaven remains ...
Detection of water ice on Nereid
... We report the detection of the 1.5 and 2.0 mm absorption bands of water ice in the near-infrared reflection spectrum of Neptune’s distant irregular satellite Nereid. The spectrum and albedo of Nereid appear intermediate between those of the Uranian satellites Umbriel and Oberon, suggesting a surface ...
... We report the detection of the 1.5 and 2.0 mm absorption bands of water ice in the near-infrared reflection spectrum of Neptune’s distant irregular satellite Nereid. The spectrum and albedo of Nereid appear intermediate between those of the Uranian satellites Umbriel and Oberon, suggesting a surface ...
The Chemical Composition of an Extrasolar Kuiper-Belt
... Volatile elements, such as nitrogen, carbon, and oxygen are crucial for the chemistry of life. The prevalence of water is of particular importance. The distributions of water and other volatiles in our solar system were controlled primarily by temperatures in the protoplanetary disk (McSween & Huss ...
... Volatile elements, such as nitrogen, carbon, and oxygen are crucial for the chemistry of life. The prevalence of water is of particular importance. The distributions of water and other volatiles in our solar system were controlled primarily by temperatures in the protoplanetary disk (McSween & Huss ...
Can TMT Image Habitable Planets ?
... Habitable planets can be imaged on ELTs (physics and nature are on our side) ELTs can operate at ~1e-5/1e-6 raw contrast and photon-noise limited detection limit → characterization (spectroscopy) of 1e-8 habitable planets accessible around dozens of nearby stars, mainly near-IR/visible Ideal targets ...
... Habitable planets can be imaged on ELTs (physics and nature are on our side) ELTs can operate at ~1e-5/1e-6 raw contrast and photon-noise limited detection limit → characterization (spectroscopy) of 1e-8 habitable planets accessible around dozens of nearby stars, mainly near-IR/visible Ideal targets ...
November, 2015 - The Baton Rouge Astronomical Society
... Angeles. “Any theoretical or computational models have to explain what we actually find.” One big early surprise (1995) was the ground-based discovery of “hot Jupiters:” gas giants the size of Jupiter in orbits around their parent stars much closer than Venus—or even Mercury—is to the Sun. How does ...
... Angeles. “Any theoretical or computational models have to explain what we actually find.” One big early surprise (1995) was the ground-based discovery of “hot Jupiters:” gas giants the size of Jupiter in orbits around their parent stars much closer than Venus—or even Mercury—is to the Sun. How does ...
GoSkyWatch User`s Guide
... Displays the ecliptic path. The ecliptic is the orbital plane the earth orbits the sun on. When seen from earth it appears as a line across the sky. You find the sun, moon and planets on or near this line. ...
... Displays the ecliptic path. The ecliptic is the orbital plane the earth orbits the sun on. When seen from earth it appears as a line across the sky. You find the sun, moon and planets on or near this line. ...
Sample
... linked to distance from the Sun, ask how seasons differ between the two hemispheres. They should then see for themselves that it can’t be distance from the Sun, or seasons would be the same globally rather than opposite in the two hemispheres. • As a follow-up on the above note: Some students get co ...
... linked to distance from the Sun, ask how seasons differ between the two hemispheres. They should then see for themselves that it can’t be distance from the Sun, or seasons would be the same globally rather than opposite in the two hemispheres. • As a follow-up on the above note: Some students get co ...
Young Astronomers Digest
... Hi Young Astronomer digest, my friends and I have both agreed that this magazine’s the best! It practically covers everything that we need to know for astronomy. Interesting articles featured every month have awed me for the whole month…Plus, I was euphoric reading your July issue. The tips of buyin ...
... Hi Young Astronomer digest, my friends and I have both agreed that this magazine’s the best! It practically covers everything that we need to know for astronomy. Interesting articles featured every month have awed me for the whole month…Plus, I was euphoric reading your July issue. The tips of buyin ...
Chapter 2. Discovering the Universe for Yourself
... Note, however, that this question can help you root out some student misconceptions. For example, some students might wonder if you could see the galaxy “sticking up” above our own galaxy’s disk—illustrating a misconception about how angular size declines with distance. They might also wonder if a t ...
... Note, however, that this question can help you root out some student misconceptions. For example, some students might wonder if you could see the galaxy “sticking up” above our own galaxy’s disk—illustrating a misconception about how angular size declines with distance. They might also wonder if a t ...
Sky-High 2013 - Irish Astronomical Society
... the Moon just about covers the bright disk of The Sun. If you were to suspend a one Euro coin about two and a half metres in front of your eye, it would just about cover the Moon's disk. The Sun is nearly 1.4 million km in diameter, the Moon is 3476 km and the one Euro coin is just over two centimet ...
... the Moon just about covers the bright disk of The Sun. If you were to suspend a one Euro coin about two and a half metres in front of your eye, it would just about cover the Moon's disk. The Sun is nearly 1.4 million km in diameter, the Moon is 3476 km and the one Euro coin is just over two centimet ...
THE EARTH AND THE UNIVERSE
... The earthview control shows the moon seen from the earth when it is set to yes, and it allows you to see eclipses when it is set to watch eclipses. The rise and tilt control allows you to see the system from a different point of view. The speed control allows you to set the speed of the simulati ...
... The earthview control shows the moon seen from the earth when it is set to yes, and it allows you to see eclipses when it is set to watch eclipses. The rise and tilt control allows you to see the system from a different point of view. The speed control allows you to set the speed of the simulati ...
topics and terms - Rice Space Institute
... So, you take the offset of the two lines (in the log, by seeing where the lower trace crosses an even power of ten and then taking the value of the upper), and squaring it, to get the value of the ratio of the masses. 29. ellipses: an oval with two foci, such that the sum of the distances from any ...
... So, you take the offset of the two lines (in the log, by seeing where the lower trace crosses an even power of ten and then taking the value of the upper), and squaring it, to get the value of the ratio of the masses. 29. ellipses: an oval with two foci, such that the sum of the distances from any ...
Chapter 2
... Complete the following concept map by correctly adding the connecting phrases or terms provided to the appropriate locations. Some items may be used more than once; others may not be applicable to this diagram. 1. converts simple elements such as 2. present in 3. for example 4. extrasolar planets su ...
... Complete the following concept map by correctly adding the connecting phrases or terms provided to the appropriate locations. Some items may be used more than once; others may not be applicable to this diagram. 1. converts simple elements such as 2. present in 3. for example 4. extrasolar planets su ...
Why do Earth satellites stay up?
... A similar question arises if we treat the Earth as spherical and consider the gravitational tides from the Moon and Sun, which are not spherically symmetric and also do not conserve angular momentum. Of course, the answer to why satellites do not crash is known, in the sense that aerospace engineers ...
... A similar question arises if we treat the Earth as spherical and consider the gravitational tides from the Moon and Sun, which are not spherically symmetric and also do not conserve angular momentum. Of course, the answer to why satellites do not crash is known, in the sense that aerospace engineers ...
Lecture02: Astronomical Distance
... Astronomers study the Sun to learn the structure and evolution of stars and sun-earth connection (climate and space weather). ...
... Astronomers study the Sun to learn the structure and evolution of stars and sun-earth connection (climate and space weather). ...
Slide 1
... Jupiter, but most are very small The four largest are the Galilean moons, so called because they were first observed by Galileo: • Io, Europa, Ganymede, Callisto Galilean moons have similarities to terrestrial planets: orbits have low eccentricity, largest is somewhat larger than Mercury, and densit ...
... Jupiter, but most are very small The four largest are the Galilean moons, so called because they were first observed by Galileo: • Io, Europa, Ganymede, Callisto Galilean moons have similarities to terrestrial planets: orbits have low eccentricity, largest is somewhat larger than Mercury, and densit ...
Scientific requirements of ALMA, and its capabilities for key
... Solar System Planetary Atmospheres, Surfaces, Comets, Exosolar Planets, … ...
... Solar System Planetary Atmospheres, Surfaces, Comets, Exosolar Planets, … ...
Journey to the Stars Educator`s Guide
... How do stars differ? Though stars may look like similar points of light from our perspective on Earth, they actually differ from each other in many ways. Stars vary in their mass, size, temperature, color, luminosity, and age. They differ in their distance from Earth, and some orbit one or more othe ...
... How do stars differ? Though stars may look like similar points of light from our perspective on Earth, they actually differ from each other in many ways. Stars vary in their mass, size, temperature, color, luminosity, and age. They differ in their distance from Earth, and some orbit one or more othe ...
Advances in exoplanet science from Kepler (Lissauer et al. 2014)
... The transit depth yields the ratio of the planetary radius to the stellar radius, and the repetition rate of transits tells us the planet’s orbital period. The stellar colours — or, better yet, stellar spectrum — can be used to deduce the star’s radius and mass, and from these we can find the planet ...
... The transit depth yields the ratio of the planetary radius to the stellar radius, and the repetition rate of transits tells us the planet’s orbital period. The stellar colours — or, better yet, stellar spectrum — can be used to deduce the star’s radius and mass, and from these we can find the planet ...
What Goes Up, Must Come Down
... Kepler’s laws In 1597, after falling out of favor with the new Danish king, Brahe moved to Prague. There, he became the astronomer to the court of Emperor Rudolph of Bohemia where, in 1600, a 29-year-old German named Johannes Kepler (1571–1630) became one of his assistants. Although Brahe still bel ...
... Kepler’s laws In 1597, after falling out of favor with the new Danish king, Brahe moved to Prague. There, he became the astronomer to the court of Emperor Rudolph of Bohemia where, in 1600, a 29-year-old German named Johannes Kepler (1571–1630) became one of his assistants. Although Brahe still bel ...
the astrolabe - IREM Aix
... Front of the astrolabe 1. Matrix or mother: a disc of brass or bronze 10 to 50 cm in diameter which accommodates the various parts of the instrument. 2. Tympanum: an engraved plate that is placed on the mother. Designed for a given latitude, certain astrolabes possess several of these. 3. Spider (or ...
... Front of the astrolabe 1. Matrix or mother: a disc of brass or bronze 10 to 50 cm in diameter which accommodates the various parts of the instrument. 2. Tympanum: an engraved plate that is placed on the mother. Designed for a given latitude, certain astrolabes possess several of these. 3. Spider (or ...
Radial Velocity - Yale Exoplanet
... color. This color change, or wavelength shift, is commonly known as a Doppler shift and it has been a powerful tool over the past century, used to measure stellar kinematics, to determine orbital parameters for stellar binary systems, and to identify stellar pulsations. By 1953, radial velocities ha ...
... color. This color change, or wavelength shift, is commonly known as a Doppler shift and it has been a powerful tool over the past century, used to measure stellar kinematics, to determine orbital parameters for stellar binary systems, and to identify stellar pulsations. By 1953, radial velocities ha ...
S T A R S
... about 68 light years away. Aldebaran is one of the few first magnitude stars that may be occulted by the moon. The disappearance of the star is startlingly abrupt, particularly so at the moons dark edge. The V shaped central group is the Hyades star cluster group and represents the bull’s head – Ald ...
... about 68 light years away. Aldebaran is one of the few first magnitude stars that may be occulted by the moon. The disappearance of the star is startlingly abrupt, particularly so at the moons dark edge. The V shaped central group is the Hyades star cluster group and represents the bull’s head – Ald ...
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.