27-1 Objectives
... • The next four protoplanets became Jupiter, Saturn, Uranus, and Neptune. • These outer planets formed far from the sun and therefore were cold. They did not lose their lighter elements, such as helium and hydrogen, or their ices, such as water ice, methane ice, and ammonia ice. • The intense heat a ...
... • The next four protoplanets became Jupiter, Saturn, Uranus, and Neptune. • These outer planets formed far from the sun and therefore were cold. They did not lose their lighter elements, such as helium and hydrogen, or their ices, such as water ice, methane ice, and ammonia ice. • The intense heat a ...
For Space: Our Solar System and Beyond The Solar System Planets
... that orbit around it: the planet, moons, asteroids and comets, and Kuiper belt objects. Earth is one of eight planets that orbit the sun in predictable paths called orbits. From the ground, planets appear to change their positions in the sky against the background of stars. The planets are roughly s ...
... that orbit around it: the planet, moons, asteroids and comets, and Kuiper belt objects. Earth is one of eight planets that orbit the sun in predictable paths called orbits. From the ground, planets appear to change their positions in the sky against the background of stars. The planets are roughly s ...
Weekly Class Newsletter
... solar system, the sun is a star, the sun is the hottest thing in the world, and sun is a ball of fire etc. were shared by students. The Central Idea and key concepts were also discussed. Learners also learned about the names of the planets in order, from the closest to the sun to the farthest from t ...
... solar system, the sun is a star, the sun is the hottest thing in the world, and sun is a ball of fire etc. were shared by students. The Central Idea and key concepts were also discussed. Learners also learned about the names of the planets in order, from the closest to the sun to the farthest from t ...
School Powerpoint Presentation on Planet X 2011
... ~2,000AU (~0.03 ly) to ~ 50,000 AU (0.79 ly) from the Sun. Some estimates place the outer edge at between 100,000 and 200,000 AU (1.58 and 3.16 ly) • Long-period comets come from the Oort Cloud ...
... ~2,000AU (~0.03 ly) to ~ 50,000 AU (0.79 ly) from the Sun. Some estimates place the outer edge at between 100,000 and 200,000 AU (1.58 and 3.16 ly) • Long-period comets come from the Oort Cloud ...
Solar System Teacher Notes
... According to the IAU (International Astronomical Union’s) 2006 definition, a planet is an object that meets each of the following 3 criteria: 1. It orbits the sun, but is not a moon 2. Its mass is large enough to have pulled it into a spherical shape 3. It has cleared its orbit of other objects. ...
... According to the IAU (International Astronomical Union’s) 2006 definition, a planet is an object that meets each of the following 3 criteria: 1. It orbits the sun, but is not a moon 2. Its mass is large enough to have pulled it into a spherical shape 3. It has cleared its orbit of other objects. ...
Pluto
... • “a planet is any body that orbits a star, is neither a star nor a satellite of a planet, and has gravity strong enough to pull it into a rounded shape” • … and “a planet must be heavy enough to clear other objects from its path” ...
... • “a planet is any body that orbits a star, is neither a star nor a satellite of a planet, and has gravity strong enough to pull it into a rounded shape” • … and “a planet must be heavy enough to clear other objects from its path” ...
HELP
... 6 The Earth gets enough light from the Sun to keep the planet warm and for plants to photosynthesise. Can plants photosynthesise on Pluto? Give reasons for your answer. ...
... 6 The Earth gets enough light from the Sun to keep the planet warm and for plants to photosynthesise. Can plants photosynthesise on Pluto? Give reasons for your answer. ...
PTYS/ASTR 206 – Section 2 – Fall 2004 Activity #1: 8/25/04
... #7. Which object below can never be seen with the naked eye (i.e. without using a telescope)? A) Mars B) Uranus C) Neptune D) Mercury #8. The first quarter moon rises at _____ and is highest in the sky at ____. A) sunset, sunrise B) noon, sunset C) midnight, sunset D) sunset, midnight #9. Who discov ...
... #7. Which object below can never be seen with the naked eye (i.e. without using a telescope)? A) Mars B) Uranus C) Neptune D) Mercury #8. The first quarter moon rises at _____ and is highest in the sky at ____. A) sunset, sunrise B) noon, sunset C) midnight, sunset D) sunset, midnight #9. Who discov ...
The Nine Planets & Other Space Objects
... Jupiters Moons - Galilean Moons discovered in 1610 by Galileo Io – most volcanic object in solar system Europa - may have liquid water beneath its icy surface Ganymede - largest of the four, larger than Mercury Callisto – third largest moon in solar system, made of rock and ice ...
... Jupiters Moons - Galilean Moons discovered in 1610 by Galileo Io – most volcanic object in solar system Europa - may have liquid water beneath its icy surface Ganymede - largest of the four, larger than Mercury Callisto – third largest moon in solar system, made of rock and ice ...
Are We Alone in the Universe?
... Until about 20 years ago, we only knew about 8 (9 then) planets! ✤ Now we know of nearly 2,000! Some estimates put the number of Earth-like planets in habitable zones at 20% of all stars! ✤ 400 billion stars in the Milky Way x 20% = 80 billion potentially habitable planets! Statistically, the answer ...
... Until about 20 years ago, we only knew about 8 (9 then) planets! ✤ Now we know of nearly 2,000! Some estimates put the number of Earth-like planets in habitable zones at 20% of all stars! ✤ 400 billion stars in the Milky Way x 20% = 80 billion potentially habitable planets! Statistically, the answer ...
The Moon
... • Icy mantles and rocky cores (about 2000 kg/m3) • Pluto has a thin atmosphere (like Triton); Charon has none. ...
... • Icy mantles and rocky cores (about 2000 kg/m3) • Pluto has a thin atmosphere (like Triton); Charon has none. ...
Solar System World Book at NASA A solar system is a group of
... Uranus has at least 27 moons, and Image credit: NASA Neptune has at least 13. The giant planets probably have more small moons not yet discovered. Asteroids are minor planets. Some have elliptical orbits that pass inside the orbit of Earth or even that of Mercury. Others travel on a circular path am ...
... Uranus has at least 27 moons, and Image credit: NASA Neptune has at least 13. The giant planets probably have more small moons not yet discovered. Asteroids are minor planets. Some have elliptical orbits that pass inside the orbit of Earth or even that of Mercury. Others travel on a circular path am ...
WEST ORANGE PUBLIC SCHOOLS
... (or orbits) around the Sun. One revolution takes about 365 days. A period of revolution is the time it takes a moon or planet to make one complete orbit. 2. What causes the apparent movement of the sun across the sky during the day on Earth? ...
... (or orbits) around the Sun. One revolution takes about 365 days. A period of revolution is the time it takes a moon or planet to make one complete orbit. 2. What causes the apparent movement of the sun across the sky during the day on Earth? ...
Definition - SchoolNotes
... geographer, and astronomer, who lived almost 2,000 years ago, was the first scientist to formulate this idea. In the Ptolemaic system, or geocentric view of the universe, Ptolemy described the planets and stars are revolving around the Earth in perfect circular orbits. Definition: an early model of ...
... geographer, and astronomer, who lived almost 2,000 years ago, was the first scientist to formulate this idea. In the Ptolemaic system, or geocentric view of the universe, Ptolemy described the planets and stars are revolving around the Earth in perfect circular orbits. Definition: an early model of ...
Notes
... Saturn, Uranus, and Neptune— are primarily made of hydrogen and helium. • Jupiter and Saturn have thick cloud layers, but are mainly liquid hydrogen. Saturn’s rings are largely particles of ice. Uranus and Neptune have thick atmospheres of hydrogen and helium. ...
... Saturn, Uranus, and Neptune— are primarily made of hydrogen and helium. • Jupiter and Saturn have thick cloud layers, but are mainly liquid hydrogen. Saturn’s rings are largely particles of ice. Uranus and Neptune have thick atmospheres of hydrogen and helium. ...
Explore the Planets
... the Sun in our Solar System. It is the planet we evolved on and the only planet in our Solar System that is known to support life. From a distance, our planet looks like a beautiful big blue marble. There are a number of things that make our planet unique in the solar system, not the least of which ...
... the Sun in our Solar System. It is the planet we evolved on and the only planet in our Solar System that is known to support life. From a distance, our planet looks like a beautiful big blue marble. There are a number of things that make our planet unique in the solar system, not the least of which ...
The Solar System
... Jupiter, around 280 million miles from the sun. There are millions of asteroids residing in this area ranging from 600 miles in diameter, all the way down to particles of dust. It is believed asteroids are the remnants from the formation of the planets. • Although there are millions of objects in th ...
... Jupiter, around 280 million miles from the sun. There are millions of asteroids residing in this area ranging from 600 miles in diameter, all the way down to particles of dust. It is believed asteroids are the remnants from the formation of the planets. • Although there are millions of objects in th ...
Planetary Trivia
... _______________ 51. Lava flow around impact craters (thin crust) _______________ 52. Seasons similar to Earth’s _______________ 53. One moon formed by huge impact on planet _______________ 54. Planet with 4 very different large moons _______________ 55. Currently being mapped by a radar orbiter ____ ...
... _______________ 51. Lava flow around impact craters (thin crust) _______________ 52. Seasons similar to Earth’s _______________ 53. One moon formed by huge impact on planet _______________ 54. Planet with 4 very different large moons _______________ 55. Currently being mapped by a radar orbiter ____ ...
File
... Absolute magnitude is the brightness of the star compared to other stars at the same distance. Apparent magnitude is how bright it appears from Earth. ...
... Absolute magnitude is the brightness of the star compared to other stars at the same distance. Apparent magnitude is how bright it appears from Earth. ...
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.