Feb 2016 - Sudbury Astronomy Club
... known objects that orbit beyond Neptune. They say there’s only a 0.007% chance, or about one in 15,000, that the clustering could be a coincidence. Instead, they say, a planet with the mass of 10 Earths has shepherded the six objects into their strange elliptical orbits, tilted out of the plane of t ...
... known objects that orbit beyond Neptune. They say there’s only a 0.007% chance, or about one in 15,000, that the clustering could be a coincidence. Instead, they say, a planet with the mass of 10 Earths has shepherded the six objects into their strange elliptical orbits, tilted out of the plane of t ...
Fig. 16-7, p.363
... from a disk around the Sun as it formed; such protoplanetary disks are seen around many young stars • Planets like Earth are believed therefore to form as normal byproducts of stars forming • There are two types of planets in our solar system, Earth-like and Jupiter-like, results of a process we thi ...
... from a disk around the Sun as it formed; such protoplanetary disks are seen around many young stars • Planets like Earth are believed therefore to form as normal byproducts of stars forming • There are two types of planets in our solar system, Earth-like and Jupiter-like, results of a process we thi ...
Powerpoint file
... If we leave out fi and fc (i.e. assume they are unity—all life forms develop our kind of intelligence and technology and try to communicate), we are calculating the number of life-bearing planets in our Galaxy at any given time (like now). We know there has been life on our planet for 3 billion year ...
... If we leave out fi and fc (i.e. assume they are unity—all life forms develop our kind of intelligence and technology and try to communicate), we are calculating the number of life-bearing planets in our Galaxy at any given time (like now). We know there has been life on our planet for 3 billion year ...
27.4 Directed Reading Guide
... 9. Jupiter is the ______________________ planet from the sun. 10. Jupiter’s mass is more than ______________________ times that of Earth. 11. How long is Jupiter’s orbital period? _______________________________________________________________ 12. How often does Jupiter rotates on its axis? ________ ...
... 9. Jupiter is the ______________________ planet from the sun. 10. Jupiter’s mass is more than ______________________ times that of Earth. 11. How long is Jupiter’s orbital period? _______________________________________________________________ 12. How often does Jupiter rotates on its axis? ________ ...
1. Phonetic exercise. Listen to me and repeat after me. Then practice
... brightest object in Earth’s sky, after the Sun, the Moon, and Venus. The Romans named it for their god, Jupiter, because of its prominence in the sky. Jupiter is a ball of gas and has no solid surface. ...
... brightest object in Earth’s sky, after the Sun, the Moon, and Venus. The Romans named it for their god, Jupiter, because of its prominence in the sky. Jupiter is a ball of gas and has no solid surface. ...
SolarSystemScaleProject_05
... 1. What does the abbreviation A.U. stand for? What is the size of one A.U.? 2. True or False: The sizes of the planets are very small compared to the distances between them. 3. Compare the distance between the Sun and Earth to the distance between the Sun and Pluto. Be as specific as possible. What ...
... 1. What does the abbreviation A.U. stand for? What is the size of one A.U.? 2. True or False: The sizes of the planets are very small compared to the distances between them. 3. Compare the distance between the Sun and Earth to the distance between the Sun and Pluto. Be as specific as possible. What ...
Hinsdale Astro TEST
... 20. What is the eventual fate of a brown dwarf? a. It remains the same forever. b. It gradually cools down and becomes every dimmer. c. It gradually contracts and heats up until nuclear fusion ignites in its interior and it becomes a faint star. d. It becomes ever denser and hotter until it becomes ...
... 20. What is the eventual fate of a brown dwarf? a. It remains the same forever. b. It gradually cools down and becomes every dimmer. c. It gradually contracts and heats up until nuclear fusion ignites in its interior and it becomes a faint star. d. It becomes ever denser and hotter until it becomes ...
Pythagoras Eudoxus of Cnidus Aristotle Eratosthenes Hipparchus
... Brahe Tycho Brahe was born December 14, 1546 in Denmark. He studied law but became interested in astronomy when he observed a solar eclipse in 1560. He read Ptolemy’s Almagest and went on to study science in several universities. In 1572, Brahe discovered a nova (a star that becomes very bright then ...
... Brahe Tycho Brahe was born December 14, 1546 in Denmark. He studied law but became interested in astronomy when he observed a solar eclipse in 1560. He read Ptolemy’s Almagest and went on to study science in several universities. In 1572, Brahe discovered a nova (a star that becomes very bright then ...
Extra-Solar Planets
... Planets are plentiful The first planet orbiting another Sun-like star was discovered in 1995. We now know of 209 (Feb 07). Including several stars with more than one planet - true planetary systems ...
... Planets are plentiful The first planet orbiting another Sun-like star was discovered in 1995. We now know of 209 (Feb 07). Including several stars with more than one planet - true planetary systems ...
M WHITE DWAR F The WhiTe-hoT Core
... pairs of stars orbiting each other, are fairly common. As many as half the stars in the Milky Way might be binary stars! ...
... pairs of stars orbiting each other, are fairly common. As many as half the stars in the Milky Way might be binary stars! ...
Patterns in the Solar System Patterns in the Solar System
... of the Earth? b) The New Horizon spacecraft will take 9 years to travel to Pluto (D=7.5x109 km). What is its average speed? c) Uranus’s orbit lasts 84 years. If you live at its South pole, for roughly how long would you see continuous day light? d) A new planet is discovered, orbiting a star of m ...
... of the Earth? b) The New Horizon spacecraft will take 9 years to travel to Pluto (D=7.5x109 km). What is its average speed? c) Uranus’s orbit lasts 84 years. If you live at its South pole, for roughly how long would you see continuous day light? d) A new planet is discovered, orbiting a star of m ...
Chapter 29 Our Solar System
... 3. Relate gravity to the motions of celestial bodies. This means I can: Describe how mass, center of mass, and distance between 2 objects affects their gravitational pull on each other. 4. Compare and contrast the properties of the terrestrial planets. This means I can: a. Name the terrestrial plane ...
... 3. Relate gravity to the motions of celestial bodies. This means I can: Describe how mass, center of mass, and distance between 2 objects affects their gravitational pull on each other. 4. Compare and contrast the properties of the terrestrial planets. This means I can: a. Name the terrestrial plane ...
An Overview of the Solar System
... particles get to the size of boulders or small asteroids. Once the larger of these particles get big enough to have significant gravity, their growth accelerates and, very quickly, they form protoplanets. (Much like the dust bunnies under your bed!) 6. About 1 million years after the nebula cooled t ...
... particles get to the size of boulders or small asteroids. Once the larger of these particles get big enough to have significant gravity, their growth accelerates and, very quickly, they form protoplanets. (Much like the dust bunnies under your bed!) 6. About 1 million years after the nebula cooled t ...
ASTR100 Class 01
... Formation of Jovian Planets Ice could also form small particles outside the frost line. Larger planetesimals and planets were able to form. Gravity of larger planets was able to draw in surrounding H and He gases. ...
... Formation of Jovian Planets Ice could also form small particles outside the frost line. Larger planetesimals and planets were able to form. Gravity of larger planets was able to draw in surrounding H and He gases. ...
solar system formation notes
... Because of the conservation of energy, the cloud heats up as it collapses. Because of angular momentum, the cloud spins faster as it contracts. ...
... Because of the conservation of energy, the cloud heats up as it collapses. Because of angular momentum, the cloud spins faster as it contracts. ...
Planetary Physics and Chemistry 2012 1. Introduction and Overview
... Our knowledge of the solar system is still expanding, due mainly to telescope observations and to spacecraft exploration. Telescopes observe the skies at many different wavelengths, from radio waves to X-rays, and come in a range of sizes. Radio telescopes are huge dishes tens of meters across, wher ...
... Our knowledge of the solar system is still expanding, due mainly to telescope observations and to spacecraft exploration. Telescopes observe the skies at many different wavelengths, from radio waves to X-rays, and come in a range of sizes. Radio telescopes are huge dishes tens of meters across, wher ...
Answers - Partake AR
... When we compare the Planet Sizes we can see that ____________ is the smallest and Jupiter is the largest. (Answer: Mercury) ...
... When we compare the Planet Sizes we can see that ____________ is the smallest and Jupiter is the largest. (Answer: Mercury) ...
1.4 Our Solar Neighbourhood
... The formation of our solar system (the Sun and nine planets) occurred the same way. The “protoplanet hypothesis” is a model for explaining the birth of solar systems. The process can be described in three steps: – 1. A cloud of gas and dust in space begins swirling. – 2. Most of the material (more t ...
... The formation of our solar system (the Sun and nine planets) occurred the same way. The “protoplanet hypothesis” is a model for explaining the birth of solar systems. The process can be described in three steps: – 1. A cloud of gas and dust in space begins swirling. – 2. Most of the material (more t ...
Observational Astronomy - Lecture 7 Solar System II
... causing Uranus(aqua) and Neptune(blue) to change places, and over 99% of the remaining small bodies to be ejected into much larger orbits. This caused the “Late Heavy Bombardment”, when many of the moon’s large craters were formed. ...
... causing Uranus(aqua) and Neptune(blue) to change places, and over 99% of the remaining small bodies to be ejected into much larger orbits. This caused the “Late Heavy Bombardment”, when many of the moon’s large craters were formed. ...
The Solar System
... much like a new group of objects found in the outer solar system. In 2006, astronomers re-classified Pluto as be a dwarf planet. ...
... much like a new group of objects found in the outer solar system. In 2006, astronomers re-classified Pluto as be a dwarf planet. ...
etlife - University of Glasgow
... The Kepler mission (launch 2007?) will detect transits of Earth-type planets, by observing the brightness dip of stars (already done in 2000 with Keck for a 0.5 x Jupiter-mass planet) There was a (rare) transit of Mercury on May 7th 2003, and a (very rare) transit of Venus on June 8th 2004 ...
... The Kepler mission (launch 2007?) will detect transits of Earth-type planets, by observing the brightness dip of stars (already done in 2000 with Keck for a 0.5 x Jupiter-mass planet) There was a (rare) transit of Mercury on May 7th 2003, and a (very rare) transit of Venus on June 8th 2004 ...
The Outer Solar System - Super Teacher Worksheets
... planet from the Sun. Saturn is most well-known for the series of beautiful rings that circle it. They are made up of tiny bits of frozen dirt and ice. Like Jupiter, Saturn is made of mostly hydrogen and helium. It is smaller though, at only ninety-five times the size of Earth. Saturn has sixty two m ...
... planet from the Sun. Saturn is most well-known for the series of beautiful rings that circle it. They are made up of tiny bits of frozen dirt and ice. Like Jupiter, Saturn is made of mostly hydrogen and helium. It is smaller though, at only ninety-five times the size of Earth. Saturn has sixty two m ...
Dwarf planet
A dwarf planet is a planetary-mass object that is neither a planet nor a natural satellite. That is, it is in direct orbit of the Sun, and is massive enough for its shape to be in hydrostatic equilibrium under its own gravity, but has not cleared the neighborhood around its orbit.The term dwarf planet was adopted in 2006 as part of a three-way categorization of bodies orbiting the Sun, brought about by an increase in discoveries of objects farther away from the Sun than Neptune that rivaled Pluto in size, and finally precipitated by the discovery of an even more massive object, Eris. The exclusion of dwarf planets from the roster of planets by the IAU has been both praised and criticized; it was said to be the ""right decision"" by astronomer Mike Brown, who discovered Eris and other new dwarf planets, but has been rejected by Alan Stern, who had coined the term dwarf planet in 1990.The International Astronomical Union (IAU) currently recognizes five dwarf planets: Ceres, Pluto, Haumea, Makemake, and Eris. Brown criticizes this official recognition: ""A reasonable person might think that this means that there are five known objects in the solar system which fit the IAU definition of dwarf planet, but this reasonable person would be nowhere close to correct.""It is suspected that another hundred or so known objects in the Solar System are dwarf planets. Estimates are that up to 200 dwarf planets may be found when the entire region known as the Kuiper belt is explored, and that the number may exceed 10,000 when objects scattered outside the Kuiper belt are considered. Individual astronomers recognize several of these, and in August 2011 Mike Brown published a list of 390 candidate objects, ranging from ""nearly certain"" to ""possible"" dwarf planets. Brown currently identifies eleven known objects – the five accepted by the IAU plus 2007 OR10, Quaoar, Sedna, Orcus, 2002 MS4 and Salacia – as ""virtually certain"", with another dozen highly likely. Stern states that there are more than a dozen known dwarf planets.However, only two of these bodies, Ceres and Pluto, have been observed in enough detail to demonstrate that they actually fit the IAU's definition. The IAU accepted Eris as a dwarf planet because it is more massive than Pluto. They subsequently decided that unnamed trans-Neptunian objects with an absolute magnitude brighter than +1 (and hence a diameter of ≥838 km assuming a geometric albedo of ≤1) are to be named under the assumption that they are dwarf planets. The only two such objects known at the time, Makemake and Haumea, went through this naming procedure and were declared to be dwarf planets. The question of whether other likely objects are dwarf planets has never been addressed by the IAU. The classification of bodies in other planetary systems with the characteristics of dwarf planets has not been addressed.