September 3 and 5 slides
... Shapley argued that they must be close for two reasons: (1) measurements of proper motions in M101 (Adrian von Maanen) lead to ludicrous rotation speeds if M101 were as big as the Milky Way; (2) comparison of brightness of SAndromedae in M31 with Nova Persei in the Milky Way ...
... Shapley argued that they must be close for two reasons: (1) measurements of proper motions in M101 (Adrian von Maanen) lead to ludicrous rotation speeds if M101 were as big as the Milky Way; (2) comparison of brightness of SAndromedae in M31 with Nova Persei in the Milky Way ...
Name
... 18) Which is not a real advantage of a space-based telescope compared to an Earthbased telescope? A) It can be open 24 hours and 7 days of week B) The space-based telescope is closer to the objects it studies. C) You do not have to worry about distorting effects of atmosphere D) There is no extra ba ...
... 18) Which is not a real advantage of a space-based telescope compared to an Earthbased telescope? A) It can be open 24 hours and 7 days of week B) The space-based telescope is closer to the objects it studies. C) You do not have to worry about distorting effects of atmosphere D) There is no extra ba ...
DEU 5e Chapter 1 Lecture PPT
... • Earth’s axis of rotation is tilted at an angle of 23½ from a line perpendicular to the plane of Earth’s orbit around the Sun (the plane of the ecliptic). This tilt, combined with Earth’s revolution around the Sun, causes the seasons. • Equinoxes and solstices are significant points along Earth’s o ...
... • Earth’s axis of rotation is tilted at an angle of 23½ from a line perpendicular to the plane of Earth’s orbit around the Sun (the plane of the ecliptic). This tilt, combined with Earth’s revolution around the Sun, causes the seasons. • Equinoxes and solstices are significant points along Earth’s o ...
Scientific Revolution - Kapteyn Astronomical Institute
... corresponding to the six known planets ...
... corresponding to the six known planets ...
Stellar Luminosity
... Distance and Parallax • It is relatively easy to measure apparent brightness of a star • Distance is much harder to measure • For nearby stars (d ≤ 3000 ly) we can use the technique of parallax • You can quickly understand parallax by putting your finger i ...
... Distance and Parallax • It is relatively easy to measure apparent brightness of a star • Distance is much harder to measure • For nearby stars (d ≤ 3000 ly) we can use the technique of parallax • You can quickly understand parallax by putting your finger i ...
Version A - Otterbein University
... e. between 6am and noon 25. The waxing gibbous moon and the sun are separated by an angle of about 135 degrees in the sky, as we are seeing more than half of the moon lit up by the sun. In which direction do you have to look to see the waxing gibbous moon when it is at its highest daily altitude abo ...
... e. between 6am and noon 25. The waxing gibbous moon and the sun are separated by an angle of about 135 degrees in the sky, as we are seeing more than half of the moon lit up by the sun. In which direction do you have to look to see the waxing gibbous moon when it is at its highest daily altitude abo ...
Version B - Otterbein University
... e) between 6am and noon 26) The waxing gibbous moon and the sun are separated by an angle of about 135 degrees in the sky, as we are seeing more than half of the moon lit up by the sun. In which direction do you have to look to see the waxing gibbous moon when it is at its highest daily altitude abo ...
... e) between 6am and noon 26) The waxing gibbous moon and the sun are separated by an angle of about 135 degrees in the sky, as we are seeing more than half of the moon lit up by the sun. In which direction do you have to look to see the waxing gibbous moon when it is at its highest daily altitude abo ...
TENTH GRADE SCOPE AND SEQUENCE DRAFT
... Night and day are caused by the rotation of the earth on its axis. The earth revolves around the sun once a year. The tilt of the earth results in seasonal changes. The sun gives us energy in the form of light and heat. The position of the sun in the sky appears to change over the course o ...
... Night and day are caused by the rotation of the earth on its axis. The earth revolves around the sun once a year. The tilt of the earth results in seasonal changes. The sun gives us energy in the form of light and heat. The position of the sun in the sky appears to change over the course o ...
Stars and Galaxies
... Matter extremely dense Not a dead star, shines with hot white light Stars will slowly die Life span range: – 10 billion – 100 billion yrs ...
... Matter extremely dense Not a dead star, shines with hot white light Stars will slowly die Life span range: – 10 billion – 100 billion yrs ...
The HARPS search for southern extra-solar planets
... planet with a 4.7-d period (Bonfils et al. 2007). This recent example emphasizes that the interpretation of small-amplitude radial-velocity variations of M dwarfs needs care, since most are expected to be at least moderately active, and illustrates the value of chromospheric diagnostics and photomet ...
... planet with a 4.7-d period (Bonfils et al. 2007). This recent example emphasizes that the interpretation of small-amplitude radial-velocity variations of M dwarfs needs care, since most are expected to be at least moderately active, and illustrates the value of chromospheric diagnostics and photomet ...
celestial sphere.
... (3) The celestial sphere appears to rotate about the celestial poles (1 day cycle) Observation: Stars, Sun, Moon and planets move in counterclockwise circles around north (south) celestial pole. Objects near the celestial equator move east to west when above the horizon (“rising” in east, “setting” ...
... (3) The celestial sphere appears to rotate about the celestial poles (1 day cycle) Observation: Stars, Sun, Moon and planets move in counterclockwise circles around north (south) celestial pole. Objects near the celestial equator move east to west when above the horizon (“rising” in east, “setting” ...
CHAP
... - Cool stars appear _________ in color with a surface temperature of about 3,200 degrees Celsius. - Warm stars appear _____________ in color with a surface temperature of about 5,500 degrees Celsius. - The hottest stars are ____________ in color and have a surface temperature over 20,000 degrees Cel ...
... - Cool stars appear _________ in color with a surface temperature of about 3,200 degrees Celsius. - Warm stars appear _____________ in color with a surface temperature of about 5,500 degrees Celsius. - The hottest stars are ____________ in color and have a surface temperature over 20,000 degrees Cel ...
AN INTRODUCTION TO ASTRONOMY Dr. Uri Griv Department of Physics, Ben-Gurion University
... lanes, is similar in many respects to our own home galaxy, the Milky Way. Recorded with a 28 million pixel detector array, this impressive image celebrates first light for the Gemini Multi-Object Spectrograph (GMOS), a state-of-the-art instrument now operational at the 8-meter Gemini North telescope ...
... lanes, is similar in many respects to our own home galaxy, the Milky Way. Recorded with a 28 million pixel detector array, this impressive image celebrates first light for the Gemini Multi-Object Spectrograph (GMOS), a state-of-the-art instrument now operational at the 8-meter Gemini North telescope ...
space - Net Start Class
... Key Concept 2: Hot clouds of gaseous elements and compounds called nebulae serve as nurseries for stars. As these nebulae spin, they slowly condense, raising their temperature and forming stars. Key Concept 3: Galaxies are made of millions of stars, interstellar gas, and dust that stay relatively cl ...
... Key Concept 2: Hot clouds of gaseous elements and compounds called nebulae serve as nurseries for stars. As these nebulae spin, they slowly condense, raising their temperature and forming stars. Key Concept 3: Galaxies are made of millions of stars, interstellar gas, and dust that stay relatively cl ...
The Scientific Method
... His data were accurate to within 1/60 of one degree, i.e., to within 1 arc minute. (Comment‐‐A simple thing which Tycho did which greatly improved his accuracy was to make several measurements of quantities and to then average his results in order to arrive at his final answer. This is standard pra ...
... His data were accurate to within 1/60 of one degree, i.e., to within 1 arc minute. (Comment‐‐A simple thing which Tycho did which greatly improved his accuracy was to make several measurements of quantities and to then average his results in order to arrive at his final answer. This is standard pra ...
Environmental Science
... Over the course of time, the North Star changes. Right now Polaris is within one degree of true north, but at other times the North Star has been and will again be Thuban (the brightest star in the constellation Draco), Vega (the brightest star in the constellation Lyra), and Alpha Cephei (the brigh ...
... Over the course of time, the North Star changes. Right now Polaris is within one degree of true north, but at other times the North Star has been and will again be Thuban (the brightest star in the constellation Draco), Vega (the brightest star in the constellation Lyra), and Alpha Cephei (the brigh ...
Return Visit Optimization for Planet Finding
... in the volume around apoapsis, followed by the volume around periapsis. If we are viewing an orbit directly head on, unobscured portions of the orbit will still lie on opposite sides. The best chance for repeating a detection will come either one or one-half orbital periods after an initial detectio ...
... in the volume around apoapsis, followed by the volume around periapsis. If we are viewing an orbit directly head on, unobscured portions of the orbit will still lie on opposite sides. The best chance for repeating a detection will come either one or one-half orbital periods after an initial detectio ...
Precession of Earth
... Over the course of time, the North Star changes. Right now Polaris is within one degree of true north, but at other times the North Star has been and will again be Thuban (the brightest star in the constellation Draco), Vega (the brightest star in the constellation Lyra), and Alpha Cephei (the brigh ...
... Over the course of time, the North Star changes. Right now Polaris is within one degree of true north, but at other times the North Star has been and will again be Thuban (the brightest star in the constellation Draco), Vega (the brightest star in the constellation Lyra), and Alpha Cephei (the brigh ...
Lunar eclipses
... Umbra is part of shadow where the sun is totally obscured, the dark part. Penumbra is the part of the shadow where the sun is partially obscured, the light part. Progress of a Lunar eclipse. The red glow is refracted red light from the Earth’s atmosphere, much like the red glow we see before s ...
... Umbra is part of shadow where the sun is totally obscured, the dark part. Penumbra is the part of the shadow where the sun is partially obscured, the light part. Progress of a Lunar eclipse. The red glow is refracted red light from the Earth’s atmosphere, much like the red glow we see before s ...
Rare Earth hypothesis
In planetary astronomy and astrobiology, the Rare Earth Hypothesis argues that the origin of life and the evolution of biological complexity such as sexually reproducing, multicellular organisms on Earth (and, subsequently, human intelligence) required an improbable combination of astrophysical and geological events and circumstances. The hypothesis argues that complex extraterrestrial life is a very improbable phenomenon and likely to be extremely rare. The term ""Rare Earth"" originates from Rare Earth: Why Complex Life Is Uncommon in the Universe (2000), a book by Peter Ward, a geologist and paleontologist, and Donald E. Brownlee, an astronomer and astrobiologist, both faculty members at the University of Washington.An alternative view point was argued by Carl Sagan and Frank Drake, among others. It holds that Earth is a typical rocky planet in a typical planetary system, located in a non-exceptional region of a common barred-spiral galaxy. Given the principle of mediocrity (also called the Copernican principle), it is probable that the universe teems with complex life. Ward and Brownlee argue to the contrary: that planets, planetary systems, and galactic regions that are as friendly to complex life as are the Earth, the Solar System, and our region of the Milky Way are very rare.