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The science behind our Sun and its interaction with Earth The
The science behind our Sun and its interaction with Earth The

... about halfway through its lifespan (Frank, 2008). The Sun's light and heat are absolutely vital to human existence, yet most of us take them for granted. The Sun is the most important factor in Earth supporting life. We have come a long way in the study of our star, and have learned much. Understand ...
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... the Big Dipper. It was the first binary star system to be imaged with a telescope. Spectroscopic observations show periodic Doppler shifts in the spectra of Mizar A and B, indicating that they are each binary stars. But they were too close to be directly imaged - until 2 May 1996, when the NPOI prod ...
How many moons does Mercury have? (Update)
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... of Phobos and Deimos are concerned, as well as moons. Earth has the moon, Mars has Phobos and Jupiter, Saturn, Neptune's and Uranus' smaller, Deimos, and Jupiter and Saturn have 67 and 62 irregular moons. It is also believed that Neptune's officially named moons, respectively. Heck, even largest moo ...
General Astronomy - Stockton University
General Astronomy - Stockton University

... Pickering. Pickering became frustrated with his male assistants at the Harvard College Observatory and, legend has it, famously declared his maid could do a better job. Turns out she could. In 1881, Pickering hired Fleming to do clerical work at the observatory. While there, she devised and helped i ...
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... the Big Dipper. It was the first binary star system to be imaged with a telescope. Spectroscopic observations show periodic Doppler shifts in the spectra of Mizar A and B, indicating that they are each binary stars. But they were too close to be directly imaged - until 2 May 1996, when the NPOI prod ...
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Handout

... , what is the half-life as measured by an observer on Earth? Hint: use the time dilation lemma. Notice that if its half-life were to be the same as measured by an observer on Earth, then the muon could only travel 1.5µs · 0.999c ≈ 450m before it decays, but muons are usually produced when cosmic ray ...
titel - Maastricht University
titel - Maastricht University

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Lunar Phases and Eclipses

... Astronomers recognize three basic types of lunar eclipses: 1. Penumbral – the Moon passes through Earth’s penumbral shadow. 2. Partial – A portion of the Moon passes through Earth’s umbral shadow. 3. Total – The entire Moon passes through Earth’s umbral shadow. ...
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FPC Name Astronomical Observations Period _____ Date ______

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HNRS 227 Lecture #2 Chapters 2 and 3
HNRS 227 Lecture #2 Chapters 2 and 3

... Planetary Observations Planets formed at same time as Sun Planetary and satellite/ring systems are similar to remnants of dusty disks such as that seen about stars being born Planet composition dependent upon where it formed in solar system ...
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... 3. The Jovian planets formed in the outer solar system far from the Sun because a) this was where most of the hydrogen and helium in the solar nebula was located. b) there were no silicates in the outer solar system.c) it was cool enough for the protoplanets forming here to capture significant amoun ...
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STAAR Science Tutorial 35 TEK 8.8B: The Sun
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... See Tutorial 36: Light-Years for a detailed discussion of distance measurement in space, and the distances between Earth and other objects in the Universe. Compared with the other stars in our galaxy, the Sun is a medium-sized star. Typical main-sequence stars in our galaxy vary in size from 0.1 tim ...
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Chapter 9 The Sun - Otto

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Lecture11 - UCSB Physics

... from interplanetary space. It entered Earth’s upper atmosphere and was collected by a high-flying aircraft. Dust grains of this sort are abundant in star-forming regions like the ...
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... belonging to the sun. But as there are six be longing to him, and going round him in very dif ferent periods of time, he is only agitated (as it were) round the common center of gravity of the whole system; and describes no regular or per fect circle round it, but is sometimes nearer to it, and at o ...
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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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