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Day 10 - Lick Observatory
Day 10 - Lick Observatory

... •  Planets close to the Sun are too hot for rain, snow, ice and so have less erosion. •  Hot planets have more difficulty retaining an atmosphere. •  Planets far from the Sun are too cold for rain, limiting ...


Chapter 21
Chapter 21

... the exploration of the planets. In this chapter, we begin that detailed study with two goals in mind. First, we search for evidence to test the solar nebula hypothesis for the formation of the solar system. Second, we search for an understanding of how planets evolve once they have formed. The moon ...
jupiter facts for kids - National Astronomy Week 2014
jupiter facts for kids - National Astronomy Week 2014

... Jupiter measures 142,984 km (88,846 miles) across. That’s over 11 times wider than the Earth. To put it another way: if Jupiter were an empty bowl, you could fit over 1,300 bodies the size of the Earth inside it. No surprise that Jupiter is known as the Giant Planet. ...
The Origin of the Earth What`s New?
The Origin of the Earth What`s New?

... years. Dynamic simulations applied to our solar system show that dust and small objects would have been quickly swept into the Sun, unless incorporated into planetary objects. Accretion of the terrestrial planets is usually modeled (Chambers 2004) in terms of four mechanistically distinct stages: 1 ...
In Orbit
In Orbit

... 1. Prompt students to think about what they already know about orbits/orbiting. Ask questions such as: • Why do we have 365 days in a year? (Why is there a leap year every four years?) It takes approximately 365 days (365 and ¼ days, thus a leap year) for the Earth to orbit the sun. • Why does th ...
geol0810 homework 1: early solar system history
geol0810 homework 1: early solar system history

... DUE: FRIDAY, FEBRUARY 24, 2017 (START OF CLASS) ...
Properties of the Asteroids
Properties of the Asteroids

... At this point astronomers had a new hobby – who would waste time searching for comets when there might be new planets waiting to be discovered! The ‘missing’ planet between Mars and Jupiter seemed to have been found on the 1st January 1801, when the Italian astronomer Guiseppe Piazzi observed someth ...
4. Survey Observations
4. Survey Observations

... earlier for the same star to be on your meridian – each month, you must observe 2 hours earlier for the same star to be on you meridian (a given RA is on your meridian 2 hours earlier each month) • Thus, the airmass of a star changes through the year as the star becomes easier or harder to observe • ...
Project Icarus: Astronomical Considerations Relating to the Choice
Project Icarus: Astronomical Considerations Relating to the Choice

... (which would be below the sensitivity of the current measurements). The statistical results discussed in Section 5 actually imply that it is quite likely that one or more of these nearby M dwarf stars will be found to be accompanied by one or more low-mass planets. Only further observations will tel ...
Document
Document

On the migration of a system of protoplanets
On the migration of a system of protoplanets

... far (y And) consists of one planet at 0.059 au on a nearly circular orbit and two planets at 0.83 and 2.5 au having larger eccentricities (0.18 and 0.41) (Butler et al. 1999). In the case of the Solar system, the question arises of what prevented any further inward migration of Jupiter. As the net t ...
Light and shadow from distant worlds
Light and shadow from distant worlds

... he first exoplanet found to orbit a solar-type star (51 Peg) was a startling discovery1. This gas-giant planet of half a Jupiter mass orbits its star at a distance six times closer than the radius of Mercury’s orbit in our own Solar System. The exoplanet, 51 Peg b, was discovered by measuring the li ...
Symposium`s Agenda - NSTA Learning Center
Symposium`s Agenda - NSTA Learning Center

Chapter 2
Chapter 2

... seismic waves that travel through Earth. As these waves move through Earth’s interior they may pass through, bounce off (reflect), and/or bend (refract) at boundaries between different rock types. The time it takes a seismic wave to travel from a source in one location to a recording station at anot ...
On the migration of a system of protoplanets
On the migration of a system of protoplanets

... far (y And) consists of one planet at 0.059 au on a nearly circular orbit and two planets at 0.83 and 2.5 au having larger eccentricities (0.18 and 0.41) (Butler et al. 1999). In the case of the Solar system, the question arises of what prevented any further inward migration of Jupiter. As the net t ...
The Jovian Planets
The Jovian Planets

...  The magnetic field is produced by the rotation of the planet and convection in a metallic core.  Because Jupiter is so large and spins so fast, its magnetic field is vary strong. It is over 20,000 times stronger than Earth’s!  The coreiolis effect and magnetic field cause Northern and Southern L ...
1 Lecture 8: Uranus and Neptune
1 Lecture 8: Uranus and Neptune

... – discovered by British William Herschel in 1781, first discovery of a planet in over 2000 years – apparent magnitude is at the edge of the naked eye’s ability to see, if you know exactly where it is – discovered through optical telescope – orbital semimajor axis: 19.19 AU, mass: 14.54 earth masses ...
The Jovian Planets
The Jovian Planets

...  The magnetic field is produced by the rotation of the planet and convection in a metallic core.  Because Jupiter is so large and spins so fast, its magnetic field is vary strong. It is over 20,000 times stronger than Earth’s!  The coriolis effect and magnetic field cause Northern and Southern Li ...
Jupiter and Saturn
Jupiter and Saturn

... and a tenuous atmosphere • Neptune has 13 satellites, one of which (Triton) is comparable in size to our Moon or the Galilean satellites of Jupiter • Triton has a young, icy surface indicative of tectonic activity • The energy for this activity may have been provided by tidal heating that occurred w ...
Useful equations - Department of Physics and Astronomy
Useful equations - Department of Physics and Astronomy

... is the distance between star and the edge of the habitable zone which corresponds with temperature T – in whatever system of units – and r [AU ] is that distance expressed in astronomical units (AU), the distance between Earth and Sun. ...
March 5, 2017
March 5, 2017

... Pluto missed the third requirement for planethood and is now called a dwarf planet. But hold on to your knickers, this decision is being challenged by the astronomy community with suggestions for modification and/or clarification. One big concern; recent observations suggest that a large body (as la ...
Session 1 - Museum of Natural Science and History
Session 1 - Museum of Natural Science and History

... These statements make it very clear – great details about a topic, like Oort cloud, but not a single piece of evidence. ‘non-science’ or nonsense I would say, pretending to be science. So many people just accept it as proper science because a well know scientist says it. These are the kinds of probl ...
Uranus - Print Version
Uranus - Print Version

... 3rd  in  place  from  the  sun   4th  largest  in  size  compared  to  planets   Hot,  warm,  cold,  frozen   Light  in  weight  compared  to  the  Uranus  –  1  g   Orbits  the  sun  -­‐  Elliptical   30  km/sec.  –    counterc ...
JUpiter ICy moons Explorer (JUICE): AN ESA L-CLASS
JUpiter ICy moons Explorer (JUICE): AN ESA L-CLASS

... on Earth are not yet clearly understood, one can assume that the necessary conditions involve the simultaneous presence of organic compounds, trace elements, water, energy sources and a relative stability of the environment over time. JUICE will address the question: Are there current habitats elsew ...
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Orrery



An orrery is a mechanical model of the solar system that illustrates or predicts the relative positions and motions of the planets and moons, usually according to the heliocentric model. It may also represent the relative sizes of these bodies; but since accurate scaling is often not practical due to the actual large ratio differences, a subdued approximation may be used instead. Though the Greeks had working planetaria, the first orrery that was a planetarium of the modern era was produced in 1704, and one was presented to Charles Boyle, 4th Earl of Orrery — whence came the name. They are typically driven by a clockwork mechanism with a globe representing the Sun at the centre, and with a planet at the end of each of the arms.
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