a light year is
... 40. Spectral lines are sometimes referred to as the stars' "fingerprints" because: a) Then tend to make patterns like the swirls in a fingerprint b) Both are unique and characteristic of that which has produced them. c) No two stars are the same spectra d) They are displayed as a series of ridges an ...
... 40. Spectral lines are sometimes referred to as the stars' "fingerprints" because: a) Then tend to make patterns like the swirls in a fingerprint b) Both are unique and characteristic of that which has produced them. c) No two stars are the same spectra d) They are displayed as a series of ridges an ...
Geology 305 with Terry J. Boroughs: The Solar System and the
... 70. Meteorites rich in (iron- and nickel- alloys) or minerals rich in metallic iron and nickel are called: A. iron meteorites C. stony-iron meteorites B. iron-silicate meteorites D. stony meteorites 71. Meteorites rich in a combination of (silicates) especially (silicates rich in iron and magnesium) ...
... 70. Meteorites rich in (iron- and nickel- alloys) or minerals rich in metallic iron and nickel are called: A. iron meteorites C. stony-iron meteorites B. iron-silicate meteorites D. stony meteorites 71. Meteorites rich in a combination of (silicates) especially (silicates rich in iron and magnesium) ...
English - Tinybop
... PLANETS The name “planets” comes from the Greek word “Planetes” which means wanderer. Early Greeks noticed that some things in the sky moved differently than stars; they “wandered.” Now we know that the planets we see in our solar system are not wandering, they are circling around, or orbiting, the ...
... PLANETS The name “planets” comes from the Greek word “Planetes” which means wanderer. Early Greeks noticed that some things in the sky moved differently than stars; they “wandered.” Now we know that the planets we see in our solar system are not wandering, they are circling around, or orbiting, the ...
A tour of the solar system.
... stellar magnitude (M) is the apparent magnitude that a star would have if it were 32.6 light years from the Earth. ...
... stellar magnitude (M) is the apparent magnitude that a star would have if it were 32.6 light years from the Earth. ...
THE SIZE AND DISTANCE SCALE OF THE UNIVERSE
... inner part of the solar system travel, and may have originated in the early years of our solar system. • Surveys of the outer part of the solar system, beyond the orbit of Pluto, have recently found several additional objects comparable to Pluto in size. • Most recently, an object apparently larger ...
... inner part of the solar system travel, and may have originated in the early years of our solar system. • Surveys of the outer part of the solar system, beyond the orbit of Pluto, have recently found several additional objects comparable to Pluto in size. • Most recently, an object apparently larger ...
Mysteries Of Space
... Do not be mistaken ,the planets are not in a straight line.The opposite in fact. The order of the planets from the Sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. In between these amazing planets are dwarf planets such as Pluto, Ceres, Makemake, Haumea and Eris. A dwarf pla ...
... Do not be mistaken ,the planets are not in a straight line.The opposite in fact. The order of the planets from the Sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. In between these amazing planets are dwarf planets such as Pluto, Ceres, Makemake, Haumea and Eris. A dwarf pla ...
Solutions2
... or why not (show a calculation)? The U of A telescope has an aperture of 12 inches (0.33 m), and therefore an angular resolution (in V band, 550 nm) of θ = 1.22 ∗ (5.5 × 10−7 m/0.33m) = 2.0 × 10−6 radians, or 0.4”. However, seeing generally sets the minimum resolution achievable with the U of A scop ...
... or why not (show a calculation)? The U of A telescope has an aperture of 12 inches (0.33 m), and therefore an angular resolution (in V band, 550 nm) of θ = 1.22 ∗ (5.5 × 10−7 m/0.33m) = 2.0 × 10−6 radians, or 0.4”. However, seeing generally sets the minimum resolution achievable with the U of A scop ...
models of the solar system
... 1. These 2 pie slices are equal in area even though they are different shapes (FAT slice and skinny slice). This means that the closer the planet is to the sun the (greater or smaller) the distance it must travel in the same amount of time. The speed of the planet is (slower or faster) at this point ...
... 1. These 2 pie slices are equal in area even though they are different shapes (FAT slice and skinny slice). This means that the closer the planet is to the sun the (greater or smaller) the distance it must travel in the same amount of time. The speed of the planet is (slower or faster) at this point ...
The Inner Planets
... out the masses of the other planets if he knew how far they were from the sun and the time it takes them to make one orbit. ...
... out the masses of the other planets if he knew how far they were from the sun and the time it takes them to make one orbit. ...
solar system - Math/Science Nucleus
... Earth, with less iron and more lightweight elements than the Earth. It is only about half as large of the Earth. Mars has two tiny bodies orbiting Mars discovered in 1877 by Asaph Hall and named Phobos and Deimos. The darker areas of Mars, call maria change during the Martian season. The spring dark ...
... Earth, with less iron and more lightweight elements than the Earth. It is only about half as large of the Earth. Mars has two tiny bodies orbiting Mars discovered in 1877 by Asaph Hall and named Phobos and Deimos. The darker areas of Mars, call maria change during the Martian season. The spring dark ...
The Jovian Planets
... Uranus & Neptune Uranus & Neptune are essentially twins. They have nearly the same mass and composition. They both formed far from the Sun where ices were very common, so their cores are rich in ices. They probably grew slowly since collisions would be slower and less frequent that far from the Sun ...
... Uranus & Neptune Uranus & Neptune are essentially twins. They have nearly the same mass and composition. They both formed far from the Sun where ices were very common, so their cores are rich in ices. They probably grew slowly since collisions would be slower and less frequent that far from the Sun ...
Astronomy Directed Reading
... 16. The smaller bodies that orbit the planets are called ____________________________________. 17. Why did the inner planets, which contained large percentages of heavy elements such as iron and nickel, lose their less dense gases? ______________________________________________ _____________________ ...
... 16. The smaller bodies that orbit the planets are called ____________________________________. 17. Why did the inner planets, which contained large percentages of heavy elements such as iron and nickel, lose their less dense gases? ______________________________________________ _____________________ ...
Our Planetary System I
... Neptune • Similar to Uranus (except for axis tilt) • Many moons (including Triton) ...
... Neptune • Similar to Uranus (except for axis tilt) • Many moons (including Triton) ...
Section 1 Formation of the Solar System Chapter 27
... attractive force that exists between any two objects in the universe. • While gravity pulls an object towards the sun, inertia keeps the object moving forward in a straight line. This forms the ellipse of a stable orbit. • The gravitational pull is strongest closer to the sun, and weakest further fr ...
... attractive force that exists between any two objects in the universe. • While gravity pulls an object towards the sun, inertia keeps the object moving forward in a straight line. This forms the ellipse of a stable orbit. • The gravitational pull is strongest closer to the sun, and weakest further fr ...
Earth
... Heliocentric model explains difference between sidereal day (23 hr, 56 min) and solar day (24 hr). ...
... Heliocentric model explains difference between sidereal day (23 hr, 56 min) and solar day (24 hr). ...
Chapter 19 - BEEarthScience8
... 20-1 The Nine Planets Uranus 7th Planet from the Sun Distance from the Sun 2.7 light hours Period of Rotation 17 hours 14 minutes Period of Revolution 83 years 274 days Diameter 51,118 km Density 1.27 g/cm3 Temp -214˚C Gravity 89% of Earth’s ...
... 20-1 The Nine Planets Uranus 7th Planet from the Sun Distance from the Sun 2.7 light hours Period of Rotation 17 hours 14 minutes Period of Revolution 83 years 274 days Diameter 51,118 km Density 1.27 g/cm3 Temp -214˚C Gravity 89% of Earth’s ...
document
... The Discovery of a Nova A nova, a star’s death, was witnessed in the constellation of Cassiopeia in 1572. Tycho observed the star from different locales on Earth. Discovered that the stars did not change position depending the location on Earth. Result: Stars too far away for stellar parallax ...
... The Discovery of a Nova A nova, a star’s death, was witnessed in the constellation of Cassiopeia in 1572. Tycho observed the star from different locales on Earth. Discovered that the stars did not change position depending the location on Earth. Result: Stars too far away for stellar parallax ...
Astronomy
... Multiple stars (1609) Sunspots (rotation of sun, sun imperfect) Phases of Venus (sphere, reflected light) Moons around Jupiter (1610) (other “centres”) Mountains on moon (“heavenly bodies are imperfect) Rings (handles) of Saturn (did not understand them) Recorded Uranus (in 1617 - but did not know i ...
... Multiple stars (1609) Sunspots (rotation of sun, sun imperfect) Phases of Venus (sphere, reflected light) Moons around Jupiter (1610) (other “centres”) Mountains on moon (“heavenly bodies are imperfect) Rings (handles) of Saturn (did not understand them) Recorded Uranus (in 1617 - but did not know i ...
Tycho: The most accurate pre
... NOT revolve around each other, but around their common center-of-mass • The Earth and the Moon both revolve around each other • This motion is in addition to Earth’s ...
... NOT revolve around each other, but around their common center-of-mass • The Earth and the Moon both revolve around each other • This motion is in addition to Earth’s ...
Astro twopages
... In this equation, P is pressure (force/area), r is distance from the center, M(r) is the net mass within r or the center (net mass located inside a sphere of radius r concentric with the , ρ(r) is the density at distance r and G is the universal gravitational constant. Distances (actually best expre ...
... In this equation, P is pressure (force/area), r is distance from the center, M(r) is the net mass within r or the center (net mass located inside a sphere of radius r concentric with the , ρ(r) is the density at distance r and G is the universal gravitational constant. Distances (actually best expre ...
Chapter 11 The Jovian Planets
... emission (two different mechanisms) • The cutoff of Jupiter low frequency radio emission is around 40 MHz, the highest frequency of all the planets. •It is the only planet from which we can receive the low frequency emission in ground-based radio telescopes •The rest of the Jovian planets emit low r ...
... emission (two different mechanisms) • The cutoff of Jupiter low frequency radio emission is around 40 MHz, the highest frequency of all the planets. •It is the only planet from which we can receive the low frequency emission in ground-based radio telescopes •The rest of the Jovian planets emit low r ...
15.6 Planets Beyond the Solar System
... Results so far (nearly all from radial velocity method) Nearly all extrasolar planets have (so far) been discovered by radial velocity method. Why? Because they are mostly planets orbiting close to their parent star, so moving fast, just what Doppler effect is sensitive to. More than 300 extras ...
... Results so far (nearly all from radial velocity method) Nearly all extrasolar planets have (so far) been discovered by radial velocity method. Why? Because they are mostly planets orbiting close to their parent star, so moving fast, just what Doppler effect is sensitive to. More than 300 extras ...
Planets of the Solar System Section 1
... Other lighter elements may have been blown or boiled away by radiation from the sun. The inner planets are smaller, rockier, and denser than the outer planets. ...
... Other lighter elements may have been blown or boiled away by radiation from the sun. The inner planets are smaller, rockier, and denser than the outer planets. ...
The Stars and the Solar System
... Even as the Earth moves through its orbit around the Sun, each star remains nearly the same distance away. ...
... Even as the Earth moves through its orbit around the Sun, each star remains nearly the same distance away. ...
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.