Lecture 10 - University of Minnesota
... The Death of the Sun • Through winds, the Sun will eject its outer layers – The Core will be exposed and is now a White Dwarf – The WD will light up the gas around it – Forms a Planetary Nebula ...
... The Death of the Sun • Through winds, the Sun will eject its outer layers – The Core will be exposed and is now a White Dwarf – The WD will light up the gas around it – Forms a Planetary Nebula ...
The Wizard Test Maker
... The best explanation for this observation is that Polaris (1) rises and sets at different locations each day (2) has an elliptical orbit around Earth (3) is located directly over Earth’s Equator (4) is located directly over Earth’s North Pole ...
... The best explanation for this observation is that Polaris (1) rises and sets at different locations each day (2) has an elliptical orbit around Earth (3) is located directly over Earth’s Equator (4) is located directly over Earth’s North Pole ...
mass of star
... Temperature of background in opposite directions nearly identical. Yet even light hasn't had time to travel from A to B (only A to Earth), so A can know nothing about conditions at B, and vice versa. So why are A and B almost identical? This is “horizon problem”. ...
... Temperature of background in opposite directions nearly identical. Yet even light hasn't had time to travel from A to B (only A to Earth), so A can know nothing about conditions at B, and vice versa. So why are A and B almost identical? This is “horizon problem”. ...
Powerpoint for today
... Temperature of background in opposite directions nearly identical. Yet even light hasn't had time to travel from A to B (only A to Earth), so A can know nothing about conditions at B, and vice versa. So why are A and B almost identical? This is “horizon problem”. ...
... Temperature of background in opposite directions nearly identical. Yet even light hasn't had time to travel from A to B (only A to Earth), so A can know nothing about conditions at B, and vice versa. So why are A and B almost identical? This is “horizon problem”. ...
Infinity Express
... A galaxy that is approaching the Milky Way and will eventually merge with our galaxy in approximately five billion years. The end-state of a high-mass star; an extremely massive concentration of matter so dense that not even light can escape its gravitational field. ...
... A galaxy that is approaching the Milky Way and will eventually merge with our galaxy in approximately five billion years. The end-state of a high-mass star; an extremely massive concentration of matter so dense that not even light can escape its gravitational field. ...
Weighing a Black Hole
... as at the centers of most galaxies in the Universe. What makes astronomers believe in these supermassive black holes, if, by definition, we can't see black holes since not even light can escape from them? The supermassive black holes at the centers of galaxies are thought to have masses between hund ...
... as at the centers of most galaxies in the Universe. What makes astronomers believe in these supermassive black holes, if, by definition, we can't see black holes since not even light can escape from them? The supermassive black holes at the centers of galaxies are thought to have masses between hund ...
Where do Stars Form ?
... Disks of matter accreted onto the protostar (“accretion disks”) often lead to the formation of jets ...
... Disks of matter accreted onto the protostar (“accretion disks”) often lead to the formation of jets ...
ASTRONOMY
... Dr Seth Shostak of the Search for Extra Terrestrial Intelligence group has said: "We'll know we are not alone between the years 2020 and 2025. His group is building 350 telescopes to listen for ETs. Shostak believes aliens could already be listening to Earth and alien life may have landed in clumps ...
... Dr Seth Shostak of the Search for Extra Terrestrial Intelligence group has said: "We'll know we are not alone between the years 2020 and 2025. His group is building 350 telescopes to listen for ETs. Shostak believes aliens could already be listening to Earth and alien life may have landed in clumps ...
Habitable worlds with JWST: transit spectroscopy of the TRAPPIST
... considerably shorter, with periods of only 1.5 and 2.4 days. Although these planets are probably less likely to be Earthlike due to their hotter temperatures, 60 or even 90 transits with each instrument would be far more easily accomplished. 180 transits of TRAPPIST-1b could be accomplished in 270 d ...
... considerably shorter, with periods of only 1.5 and 2.4 days. Although these planets are probably less likely to be Earthlike due to their hotter temperatures, 60 or even 90 transits with each instrument would be far more easily accomplished. 180 transits of TRAPPIST-1b could be accomplished in 270 d ...
Stars I - Astronomy Centre
... extremely hard to see due to glare from the host star • However, since stars and massive planets are in orbit about each other we can detect a “wobble” in the position of stars with nearby massive planets • The existence of many extra-solar planets is now inferred from such observations ...
... extremely hard to see due to glare from the host star • However, since stars and massive planets are in orbit about each other we can detect a “wobble” in the position of stars with nearby massive planets • The existence of many extra-solar planets is now inferred from such observations ...
The Celestial Sphere
... According to the Lakota, the Constellation of the Hand, namely the bottom half of the constellation Orion, represents the arm of a great Lakota chief. The gods wanted to punish the Lakota's chief for his selfishness and made the Thunder People rip out his arm. The chief's daughter offered to marry a ...
... According to the Lakota, the Constellation of the Hand, namely the bottom half of the constellation Orion, represents the arm of a great Lakota chief. The gods wanted to punish the Lakota's chief for his selfishness and made the Thunder People rip out his arm. The chief's daughter offered to marry a ...
OurPrivPlanet.ppt - Heinz Lycklama`s Website
... Search For Other Planets Earth Is Our Privileged Planet! @ Dr. Heinz Lycklama ...
... Search For Other Planets Earth Is Our Privileged Planet! @ Dr. Heinz Lycklama ...
The Bible, Science and Creation
... Search For Other Planets Earth Is Our Privileged Planet! @ Dr. Heinz Lycklama ...
... Search For Other Planets Earth Is Our Privileged Planet! @ Dr. Heinz Lycklama ...
Linking Asteroids and Meteorites through Reflectance
... Protostar • The dense cloud fragment gets hotter as it contracts • The cloud becomes denser and radiation cannot escape • The thermal pressure and gas temperature start to rise and rise • The dense cloud fragment becomes a protostar ...
... Protostar • The dense cloud fragment gets hotter as it contracts • The cloud becomes denser and radiation cannot escape • The thermal pressure and gas temperature start to rise and rise • The dense cloud fragment becomes a protostar ...
PDF format
... helium to flung out to their outer layers and denser hydrogen compounds to settle in their cores. b) Their rapid rotation causes the planets to be slightly flattened, larger across the equator than pole-to-pole. c) Their rapid rotation causes a build up of hydrogen and helium near the equator and ...
... helium to flung out to their outer layers and denser hydrogen compounds to settle in their cores. b) Their rapid rotation causes the planets to be slightly flattened, larger across the equator than pole-to-pole. c) Their rapid rotation causes a build up of hydrogen and helium near the equator and ...
Helium Fusion What Will Happen When There Is No More Helium in
... stages of life in a low-mass star? A. protostar, main-sequence star, red giant, planetary nebula, white dwarf B. protostar, main-sequence star, red giant, supernova, neutron star C. main-sequence star, white dwarf, red giant, planetary nebula, protostar D. protostar, main-sequence star, planetar ...
... stages of life in a low-mass star? A. protostar, main-sequence star, red giant, planetary nebula, white dwarf B. protostar, main-sequence star, red giant, supernova, neutron star C. main-sequence star, white dwarf, red giant, planetary nebula, protostar D. protostar, main-sequence star, planetar ...
dialogue 2
... are at both its ends. And, as gravity and weight are synonimous terms, the point g, or center of the steelyard, is not improperly termed the center of gravity of the weights A and B. E. I understand you perfectly well; and am much obliged to you for the pains you have taken hitherto to make every th ...
... are at both its ends. And, as gravity and weight are synonimous terms, the point g, or center of the steelyard, is not improperly termed the center of gravity of the weights A and B. E. I understand you perfectly well; and am much obliged to you for the pains you have taken hitherto to make every th ...
lecture22
... forced to be too close together. A quantum mechanical law called the Pauli Exclusion Principle restricts electrons from being in the same state (i.e., keeps them from being too close together). The resulting outward pressure which keeps the electrons apart is called electron degeneracy pressure – th ...
... forced to be too close together. A quantum mechanical law called the Pauli Exclusion Principle restricts electrons from being in the same state (i.e., keeps them from being too close together). The resulting outward pressure which keeps the electrons apart is called electron degeneracy pressure – th ...
The
... surrounding regions). Sunspots can be very large, as much as 50,000 km in diameter. Sunspots are caused by complicated and not very well understood interactions with the Sun's magnetic field. ...
... surrounding regions). Sunspots can be very large, as much as 50,000 km in diameter. Sunspots are caused by complicated and not very well understood interactions with the Sun's magnetic field. ...
Lab 2
... 12. Draw the location of the Sun as accurately as possible on figure 3. 13. Two students are discussing their answers to the question “Figure 4 shows the same view of the sky one month later on January 1. Draw the location of the Sun as accurately as possible on figure 4.” Student 1 (Davey): The Sun ...
... 12. Draw the location of the Sun as accurately as possible on figure 3. 13. Two students are discussing their answers to the question “Figure 4 shows the same view of the sky one month later on January 1. Draw the location of the Sun as accurately as possible on figure 4.” Student 1 (Davey): The Sun ...
Document
... a superwind. The mechanisms behind superwinds are not very well understood. However, we know that they exist from observational evidence (the rate of mass loss can be observed). ...
... a superwind. The mechanisms behind superwinds are not very well understood. However, we know that they exist from observational evidence (the rate of mass loss can be observed). ...
What is it? - Carmenes - Calar Alto Observatory
... highly-stabilised spectroscopy for measuring the radial velocity reflex motion of the host star induced by unseen companions, the minimum mass of the newly discovered exoplanets is getting lower and lower. However, in spite of the efforts of astronomers, we have not been able to detect yet the first ...
... highly-stabilised spectroscopy for measuring the radial velocity reflex motion of the host star induced by unseen companions, the minimum mass of the newly discovered exoplanets is getting lower and lower. However, in spite of the efforts of astronomers, we have not been able to detect yet the first ...
01 - MrPetersenScience
... _____ 9. What element makes up about 75% of the sun’s mass? a. helium b. iron c. hydrogen d. radium _____ 10. How much of the sun’s total mass is composed of hydrogen and helium? a. about 75% b. about 85% c. about 90% d. about 99% _____ 11. The sun’s spectrum reveals that it contains a. almost nothi ...
... _____ 9. What element makes up about 75% of the sun’s mass? a. helium b. iron c. hydrogen d. radium _____ 10. How much of the sun’s total mass is composed of hydrogen and helium? a. about 75% b. about 85% c. about 90% d. about 99% _____ 11. The sun’s spectrum reveals that it contains a. almost nothi ...
Formation and evolution of the Solar System
The formation of the Solar System began 4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud. Most of the collapsing mass collected in the center, forming the Sun, while the rest flattened into a protoplanetary disk out of which the planets, moons, asteroids, and other small Solar System bodies formed.This widely accepted model, known as the nebular hypothesis, was first developed in the 18th century by Emanuel Swedenborg, Immanuel Kant, and Pierre-Simon Laplace. Its subsequent development has interwoven a variety of scientific disciplines including astronomy, physics, geology, and planetary science. Since the dawn of the space age in the 1950s and the discovery of extrasolar planets in the 1990s, the model has been both challenged and refined to account for new observations.The Solar System has evolved considerably since its initial formation. Many moons have formed from circling discs of gas and dust around their parent planets, while other moons are thought to have formed independently and later been captured by their planets. Still others, such as the Moon, may be the result of giant collisions. Collisions between bodies have occurred continually up to the present day and have been central to the evolution of the Solar System. The positions of the planets often shifted due to gravitational interactions. This planetary migration is now thought to have been responsible for much of the Solar System's early evolution.In roughly 5 billion years, the Sun will cool and expand outward many times its current diameter (becoming a red giant), before casting off its outer layers as a planetary nebula and leaving behind a stellar remnant known as a white dwarf. In the far distant future, the gravity of passing stars will gradually reduce the Sun's retinue of planets. Some planets will be destroyed, others ejected into interstellar space. Ultimately, over the course of tens of billions of years, it is likely that the Sun will be left with none of the original bodies in orbit around it.