Our Star - the Sun
... Mass-Luminosity Relation for MainSequence Stars • Main sequence stars are stars like the Sun but with different masses • The mass-luminosity relation expresses a direct correlation between mass and luminosity for main-sequence stars • The greater the mass of a main-sequence star, the greater its lu ...
... Mass-Luminosity Relation for MainSequence Stars • Main sequence stars are stars like the Sun but with different masses • The mass-luminosity relation expresses a direct correlation between mass and luminosity for main-sequence stars • The greater the mass of a main-sequence star, the greater its lu ...
6th Grade Great Barrier Reef
... Beyond the Milky Way, there are billions more stars in the galaxies that are our closest neighbors. One of our close neighbors is the Andromeda galaxy, but don’t expect to travel there soon. Even though Andromeda is closer to us than most other galaxies, it is almost 2 million light years away ...
... Beyond the Milky Way, there are billions more stars in the galaxies that are our closest neighbors. One of our close neighbors is the Andromeda galaxy, but don’t expect to travel there soon. Even though Andromeda is closer to us than most other galaxies, it is almost 2 million light years away ...
Precession of Earth
... In the case of the earth, precession is caused by the gravitational pull of the sun and the moon. The earth's axis makes one complete rotation over the course of approximately 26,000 years. If you trace the path of the axis in the sky, you will find that Polaris, Vega, Thuban, and Alpha Cephei all f ...
... In the case of the earth, precession is caused by the gravitational pull of the sun and the moon. The earth's axis makes one complete rotation over the course of approximately 26,000 years. If you trace the path of the axis in the sky, you will find that Polaris, Vega, Thuban, and Alpha Cephei all f ...
Chapter-6 Lecture Spring Semester
... as viewed from above Earth’s North Pole) is the same as the direction in which the Sun rotates on its axis. ...
... as viewed from above Earth’s North Pole) is the same as the direction in which the Sun rotates on its axis. ...
The Life Cycle of the Stars
... In general, the smaller the mass of a star, the longer its life. Our Sun is now near the mid-point of its estimated 10 billion year life. Stars that are many times more massive than our Sun experience dramatic and sometimes explosive endings. Following the red giant stage they may continue to expand ...
... In general, the smaller the mass of a star, the longer its life. Our Sun is now near the mid-point of its estimated 10 billion year life. Stars that are many times more massive than our Sun experience dramatic and sometimes explosive endings. Following the red giant stage they may continue to expand ...
Properties of Stars
... Characteristics of Stars • Color is a clue to a star’s temperature • Very hot (30,000 K) stars emit their light in the blue spectrum, red stars are much cooler, stars with temperatures between 5000 and 6000 K appear yellow • Binary Stars – pairs of stars, pulled together by gravity, that orbit each ...
... Characteristics of Stars • Color is a clue to a star’s temperature • Very hot (30,000 K) stars emit their light in the blue spectrum, red stars are much cooler, stars with temperatures between 5000 and 6000 K appear yellow • Binary Stars – pairs of stars, pulled together by gravity, that orbit each ...
6 Scale Model of the Solar System
... 3) Which planet would you expect to have the warmest surface temperature? Why? (2 points) ...
... 3) Which planet would you expect to have the warmest surface temperature? Why? (2 points) ...
6 Scale Model of the Solar System
... 3) Which planet would you expect to have the warmest surface temperature? Why? (2 points) ...
... 3) Which planet would you expect to have the warmest surface temperature? Why? (2 points) ...
How the Earth Moves Transcript
... front of the disc of the sun; and indeed the first transit of Venus was observed by Jeremiah Horrocks in 1639. The fact that the other three planets known at the time could travel round to lie exactly opposite the Sun on the sky, high above the horizon at midnight, meant that the Earth must sometime ...
... front of the disc of the sun; and indeed the first transit of Venus was observed by Jeremiah Horrocks in 1639. The fact that the other three planets known at the time could travel round to lie exactly opposite the Sun on the sky, high above the horizon at midnight, meant that the Earth must sometime ...
8L Earth and Space SoW
... Explain how a compass can be used together with maps for navigation Explain how a plotting compass can be used to show the shape and direction of a magnetic field Describe the Earth’s magnetic field and explain why a magnetic compass needle points north Describe the shape of the magnetic field betwe ...
... Explain how a compass can be used together with maps for navigation Explain how a plotting compass can be used to show the shape and direction of a magnetic field Describe the Earth’s magnetic field and explain why a magnetic compass needle points north Describe the shape of the magnetic field betwe ...
The Origin of the Earth What`s New?
... recent years, which is timely given the current search for other habitable solar systems. At the present time we do not know whether our solar system, with terrestrial planets located within a few astronomical units2 of a solar-mass star, is unusual or common. Neither do we understand where the wate ...
... recent years, which is timely given the current search for other habitable solar systems. At the present time we do not know whether our solar system, with terrestrial planets located within a few astronomical units2 of a solar-mass star, is unusual or common. Neither do we understand where the wate ...
PDF, 179Kb - Maths Careers
... The brightest star in the Scorpio constellation is a red supergiant star called Antares. Even though Antares and our solar system are both in the Milky Way galaxy, Antares is 4.94 x 1015 km away from the Earth. Astronomers estimate that Antares is just one of roughly 2.5 x 1011 stars in the Milky Wa ...
... The brightest star in the Scorpio constellation is a red supergiant star called Antares. Even though Antares and our solar system are both in the Milky Way galaxy, Antares is 4.94 x 1015 km away from the Earth. Astronomers estimate that Antares is just one of roughly 2.5 x 1011 stars in the Milky Wa ...
FREE Sample Here
... Geosystems begins with the Sun and Solar System to launch the first of four parts. Our planet and our lives are powered by radiant energy from the star closest to Earth—the Sun. Each of us depends on many systems that are set into motion by energy from the Sun. These systems are the subjects of Part ...
... Geosystems begins with the Sun and Solar System to launch the first of four parts. Our planet and our lives are powered by radiant energy from the star closest to Earth—the Sun. Each of us depends on many systems that are set into motion by energy from the Sun. These systems are the subjects of Part ...
March 2011 - Sunderland Astronomical Society
... and Economic Impacts." For the past several years the sun has been in its most quiescent state since early in the 20th century, said Baker. ...
... and Economic Impacts." For the past several years the sun has been in its most quiescent state since early in the 20th century, said Baker. ...
The
... visible only during a total solar eclipse (left). Temperatures in the corona are over 1,000,000 K. It just happens that the Moon and the Sun appear the same size in the sky as viewed from the Earth. And since the Moon orbits the Earth in approximately the same plane as the Earth's orbit around the S ...
... visible only during a total solar eclipse (left). Temperatures in the corona are over 1,000,000 K. It just happens that the Moon and the Sun appear the same size in the sky as viewed from the Earth. And since the Moon orbits the Earth in approximately the same plane as the Earth's orbit around the S ...
The Hertzsprung-Russell Diagram
... sequence K5 stars radiate the same amount of energy from each square meter. So, in order for the K5 giant to be more luminous, it must have more square meters; i.e, it must have a larger surface area, thus a larger radius. 5. The B0 I star is farthest away, as it is the most luminous among the star ...
... sequence K5 stars radiate the same amount of energy from each square meter. So, in order for the K5 giant to be more luminous, it must have more square meters; i.e, it must have a larger surface area, thus a larger radius. 5. The B0 I star is farthest away, as it is the most luminous among the star ...
PLANETS
... Assumption: gravitational interaction with disc generates eccentricity Advantages: • Same mechanism as invoked for migration • Works for just one planet in the system • Theoretically, interaction is expected to increase eccentricity if dominated by 3:1 resonance Disadvantages: • Gap is only expected ...
... Assumption: gravitational interaction with disc generates eccentricity Advantages: • Same mechanism as invoked for migration • Works for just one planet in the system • Theoretically, interaction is expected to increase eccentricity if dominated by 3:1 resonance Disadvantages: • Gap is only expected ...
Astronomy Chapter 11 – Meteors, Comets and Asteroids A. Main
... radioactive material, which can be used to determine the age of the meteorite. Most have been dated to be around 4.5 billion years old. ⇒ In some meteorites the chondrules are embedded in a black, carbon-rich, coal-like substance. These meteorites contain organic compounds including amino acids, whi ...
... radioactive material, which can be used to determine the age of the meteorite. Most have been dated to be around 4.5 billion years old. ⇒ In some meteorites the chondrules are embedded in a black, carbon-rich, coal-like substance. These meteorites contain organic compounds including amino acids, whi ...
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.