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Earth is the third planet from the Sun. It is a rocky planet and the fifth
Earth is the third planet from the Sun. It is a rocky planet and the fifth

... one moon and no rings. © www.thecurriculumcorner.com ...
The Sky and Its Motion - west
The Sky and Its Motion - west

... stars stuck on the inside (like thumbtacks in the ceiling). • We now know the stars are great distances away, not all the same distance from Earth. ...
Astronomy - SparkNotes
Astronomy - SparkNotes

... 2. Pick an interval of time (e.g., a month). In that amount of time, the line connecting a planet to the Sun will sweep over the same area, regardless of where it is on its elliptical orbit. • Implication: Planets move faster when they are closer to the sun (see Figure 2). ...
Here
Here

...  If you measure the length of time between successive “noons” (the time when the Sun is at its highest point in the sky), the day is on average 24 hours. This is a “mean solar day.”  If you do the same thing, but with a star rather than with the Sun, the day is about 23 hours and 56 minutes. This ...
The Origins of Modern Astronomy Astronomy goes back to well
The Origins of Modern Astronomy Astronomy goes back to well

... him was, “If Earth is moving, why don’t we see any stellar parallax?” Parallax is not a difficult concept. Most people know what it is, but do not know that it has a name. Take your finger and place it in front of your nose. Now close one eye and look at the finger with your other eye. Now switch ey ...
electromagnetic spectrum and spectroscopy
electromagnetic spectrum and spectroscopy

... speed (v): how much distance the wave moves per unit time (for an EM wave v = c = 3 x 108 m/s) frequency (f or ν (nu)): number of peaks that pass a location in a given time (units: Hertz (Hz) = 1/s = s-1) ...
File
File

... • To measure to greater distances, we use more indirect methods which are calibrated by stellar parallax. • All other methods, except cosmological redshift, use the 1/r2 dimming of light. – We measure apparent brightness or magnitude and compare it with absolute brightness or magnitude. ...
February 2007
February 2007

The Night Sky This Month - Usk Astronomical Society
The Night Sky This Month - Usk Astronomical Society

... A syzygy is when three interacting celestial bodies form a straight line, and is used to define either of the two positions (conjunction or opposition) of a celestial body when sun, earth, and the body lie in a straight line: the moon is at syzygy when full and again when new. The correct astronomic ...
Due: January 3, 2014 Name
Due: January 3, 2014 Name

... The celestial equator is the great circle on the celestial sphere that is midway between the celestial poles. The plane of the celestial equator is the same as the plane of the Earth’s equator. The north and south celestial poles are at the intersection of the celestial sphere with the extension of ...
The Sun and the Stars
The Sun and the Stars

Midterm Study Game
Midterm Study Game

Teacher`s Guide - Discovery Education
Teacher`s Guide - Discovery Education

... Meteoroids are space rocks that can enter Earth’s atmosphere. When a meteoroid burns, it becomes a meteor, or a streak of light. The part that doesn’t burn and falls to Earth is a ...
Indirect Observation Method - Portal do Professor
Indirect Observation Method - Portal do Professor

... What is the Sun? If it is a star, why is it so much brighter than those we see during the night? If the Sun is so much brighter than the Moon, why do these two bodies seem to be the same size when observed from the Earth (this fact is even more evident during total solar eclipses when the new Moon c ...
PowerPoint File
PowerPoint File

... Measure the distance over which the density of stars significantly falls off with height above, or distance below, the galactic plane. The distance depends on the type of objects considered, but is roughly 100 – 200 parsecs. The galactic plane is much thinner than it is wide. ...
Our Solar System I - hrsbstaff.ednet.ns.ca
Our Solar System I - hrsbstaff.ednet.ns.ca

... The four inner planets are called terrestrial planets. They are relatively small (with diameters of 5000 to 13,000 km), have high average densities (4000 to 5500 kg/m3), and are composed primarily of rocky materials. The four giant outer planets are called Jovian planets. They have large diameters ( ...
Earth, moon, and sun
Earth, moon, and sun

... What keeps objects in motion? Why doesn’t the Earth fall into the sun or the moon crash into Earth? Inertia-the tendency of an object at rest to stay at rest or an object in motion to remain in motion. NEWTON’S FIRST LAW OF MOTION inertia and gravity keep earth in orbit around the sun and the moon ...
Science Grade 5 Date: March 21, 2014 ET Topic: Composition a
Science Grade 5 Date: March 21, 2014 ET Topic: Composition a

... moon - any natural body that revolves around a planet crater - a low, bowl-shaped area on the surface of a planet or moon moon phase - one of the shapes the moon seems to have as it orbits Earth eclipse - an event that occurs when one object in space passes through the shadow of another object in sp ...
Activity 1: The Scientific Method
Activity 1: The Scientific Method

... Astronomers know a great deal about other stars. Various observations and calculations have produced data on many stars’ distances, temperatures, luminosities (brightness), as well as the radial motion of these stars. The goal of this activity is to use the scientific method to determine if any of t ...
lecture4
lecture4

... due to the bubonic plague. But only in 1687 were his results published in Philosophiae Naturalis Principia Mathematica – the cornerstone of physics and astronomy ever since. In this work, he introduced the essential ingredient of using mathematics to describe the physical world, and he provided the ...
Energy Systems & Climate Change
Energy Systems & Climate Change

... Day length and temperature change more at the poles. You can find the length of the day with your model. More? ...
The Origin of the Solar System
The Origin of the Solar System

...  Best source of information about the Solar System’s early years ...
Understanding Planetary Motion
Understanding Planetary Motion

Educator Guide: Starlab (Grades 6-8)
Educator Guide: Starlab (Grades 6-8)

... star’s absolute brightness (called luminosity) and its temperature. The HR  diagram is a great tool for classifying stars. Lightyear – the distance light travels in one year, approximately 6 trillion miles  Local Group – a group of over 30 galaxies around and including our Milky Way  galaxy  Lunar E ...
Rocky Planets Gas Giants
Rocky Planets Gas Giants

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Astronomical unit

The astronomical unit (symbol au, AU or ua) is a unit of length, roughly the distance from the Earth to the Sun. However, that distance varies as the Earth orbits the Sun, from a maximum (aphelion) to a minimum (perihelion) and back again once a year. Originally conceived as the average of Earth's aphelion and perihelion, it is now defined as exactly 7011149597870700000♠149597870700 meters (about 150 million kilometers, or 93 million miles). The astronomical unit is used primarily as a convenient yardstick for measuring distances within the Solar System or around other stars. However, it is also a fundamental component in the definition of another unit of astronomical length, the parsec.
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