The Search for Earth-Like Planets
... Premise: If there is intelligent life “out there”, it probably is similar to life as we know it on Earth. ...
... Premise: If there is intelligent life “out there”, it probably is similar to life as we know it on Earth. ...
Where do you find yourself now??
... The closest star to the Sun is only 7000 times further than the edge of our solar system. This map shows all of the stellar systems that lie within 12.5 light years from us. ...
... The closest star to the Sun is only 7000 times further than the edge of our solar system. This map shows all of the stellar systems that lie within 12.5 light years from us. ...
Benchmark lesson
... Most people living in Florida know that the Sun constantly gives off a lot of energy. Its energy comes from reaction between the hydrogen gas and the helium gas that makes up the Sun. During the reaction, called nuclear fusion, large amounts of energy are given off in the form of light and heat. Man ...
... Most people living in Florida know that the Sun constantly gives off a lot of energy. Its energy comes from reaction between the hydrogen gas and the helium gas that makes up the Sun. During the reaction, called nuclear fusion, large amounts of energy are given off in the form of light and heat. Man ...
The Birth of Stars
... are glowing, ionized clouds of gas – Emission nebulae are powered by ultraviolet light that they absorb from nearby hot stars ...
... are glowing, ionized clouds of gas – Emission nebulae are powered by ultraviolet light that they absorb from nearby hot stars ...
Astronomical Distance Determination • etc.
... Size of galaxy determined by how far away we could see stars 1912 - Henrietta Leavitt discovers P-L relation for Cepheid variables 1913 - Ejnar Hertzsprung calibrates the relation using nearby (Type I Cepheids) but ignored reddening. 1918 - Shapley determines distance to galactic center by getting d ...
... Size of galaxy determined by how far away we could see stars 1912 - Henrietta Leavitt discovers P-L relation for Cepheid variables 1913 - Ejnar Hertzsprung calibrates the relation using nearby (Type I Cepheids) but ignored reddening. 1918 - Shapley determines distance to galactic center by getting d ...
The Birth of Stars Guiding Questions • Because stars shine by
... 6. What do star clusters tell us about the formation of stars? 7. Where in the Galaxy does star formation take place? 8. How can the death of one star trigger the birth of many other stars? ...
... 6. What do star clusters tell us about the formation of stars? 7. Where in the Galaxy does star formation take place? 8. How can the death of one star trigger the birth of many other stars? ...
Measuring Distance with Spectroscopic Parallax
... In this lab activity, we will use the method of spectroscopic parallax. You are given the brightness and spectral type for a number of stars. You will use the method outlined above to find the distance to these stars. ...
... In this lab activity, we will use the method of spectroscopic parallax. You are given the brightness and spectral type for a number of stars. You will use the method outlined above to find the distance to these stars. ...
Luminosity and brightness
... (b) the distance of the star from the observer on the Earth If we have two stars of the same luminosity with one star double the distance of the other from the Earth the closer star will look four times brighter. It obeys the inverse square law. The photograph shows the Pleiades star cluster. The br ...
... (b) the distance of the star from the observer on the Earth If we have two stars of the same luminosity with one star double the distance of the other from the Earth the closer star will look four times brighter. It obeys the inverse square law. The photograph shows the Pleiades star cluster. The br ...
Beyond the Solar System Homework for Geology 8
... B. Red giant E. White dwarf 23. The final stage in the evolution of only the most massive stars is a: A. Black hole C. Black dwarf D. Main-sequence star B. Red giant E. White dwarf 24. A star that spins rapidly and emits pulsating radio waves is called a: A. Black hole C. Black dwarf D. Red giant B. ...
... B. Red giant E. White dwarf 23. The final stage in the evolution of only the most massive stars is a: A. Black hole C. Black dwarf D. Main-sequence star B. Red giant E. White dwarf 24. A star that spins rapidly and emits pulsating radio waves is called a: A. Black hole C. Black dwarf D. Red giant B. ...
Galaxies and Stars
... Stars are burning balls of gas and dust. Stars come in various size and brightness. Stars are compared using an H-R diagram. Groups of stars are called clusters. ...
... Stars are burning balls of gas and dust. Stars come in various size and brightness. Stars are compared using an H-R diagram. Groups of stars are called clusters. ...
Summary of Double Star Discoveries and JDSO Submissions
... notes. Here is the actual report excerpt: At 04:28:01.0 the magnitude 10.1 target star TYC 4677-00696-1 crisply faded but did NOT disappear. It remained at least as bright as magnitude 12.9 GSC 4677-806 located 1.7' northeast. This failure to dim the predicted 4.7 magnitudes completely surprised me ...
... notes. Here is the actual report excerpt: At 04:28:01.0 the magnitude 10.1 target star TYC 4677-00696-1 crisply faded but did NOT disappear. It remained at least as bright as magnitude 12.9 GSC 4677-806 located 1.7' northeast. This failure to dim the predicted 4.7 magnitudes completely surprised me ...
EX - Uplift North Hills Prep
... (a) The more massive stars will have much more nuclear material (initially hydrogen). Massive stars have greater gravity so equilibrium is reached at a higher temperature at which the outward pressure due to radiation and the hot gas will balance the inward gravitational pressure. This means that fu ...
... (a) The more massive stars will have much more nuclear material (initially hydrogen). Massive stars have greater gravity so equilibrium is reached at a higher temperature at which the outward pressure due to radiation and the hot gas will balance the inward gravitational pressure. This means that fu ...
MT 2 Answers Version C
... 41. Which of the following did NOT require the use of a telescope to observe? (a) ...
... 41. Which of the following did NOT require the use of a telescope to observe? (a) ...
MT 2 Answers Version D
... 3. In a spaceship orbiting Earth, two astronauts want to measure the mass of a mouse. How can they easily do it if they are in constant free fall? (a) ...
... 3. In a spaceship orbiting Earth, two astronauts want to measure the mass of a mouse. How can they easily do it if they are in constant free fall? (a) ...
Chapter 9 “The Family of Stars “
... Mars' orbit is larger than Earth's, and stars would show a larger parallax when observed from Mars as compared to Earth. We would be able to determine the distance to nearby stars more accurately and determine the distance to stars that are currently too far to be measured using parallax from Earth. ...
... Mars' orbit is larger than Earth's, and stars would show a larger parallax when observed from Mars as compared to Earth. We would be able to determine the distance to nearby stars more accurately and determine the distance to stars that are currently too far to be measured using parallax from Earth. ...
Slide 1
... The spectra of O-Type stars shows the presence of hydrogen and helium. At these temperatures most of the hydrogen is ionized, so the hydrogen lines are weak. Both HeI and HeII (singly ionized helium) are seen in the higher temperature examples. The radiation from O5 stars is so intense that it can i ...
... The spectra of O-Type stars shows the presence of hydrogen and helium. At these temperatures most of the hydrogen is ionized, so the hydrogen lines are weak. Both HeI and HeII (singly ionized helium) are seen in the higher temperature examples. The radiation from O5 stars is so intense that it can i ...
Why is there a main sequence?
... Mmax ~ 100 solar masses a) More massive clouds fragment into smaller pieces during star formation ...
... Mmax ~ 100 solar masses a) More massive clouds fragment into smaller pieces during star formation ...
Question: Fossilized footprints of Coelophysis
... Picking the right table: The key word fossil suggests the Geologic History of New York State table (pp. NY26–NY27). You can use this table to look up the geologic era in which Coelophysis lived. The Generalized Bedrock Geology of New York State (p. NY21) contains a key with geological eras, as well ...
... Picking the right table: The key word fossil suggests the Geologic History of New York State table (pp. NY26–NY27). You can use this table to look up the geologic era in which Coelophysis lived. The Generalized Bedrock Geology of New York State (p. NY21) contains a key with geological eras, as well ...
Name
... clusters, globular clusters, and spiral galaxies. Count the number of each of these in this area. bright nebulae ________, open clusters _________, globular clusters __________, spiral galaxies ________ B. Now slowly search the sky for a different region which is richer in spiral galaxies than the O ...
... clusters, globular clusters, and spiral galaxies. Count the number of each of these in this area. bright nebulae ________, open clusters _________, globular clusters __________, spiral galaxies ________ B. Now slowly search the sky for a different region which is richer in spiral galaxies than the O ...
elementary measuring stars
... open star cluster NGC 6087 is identical to the H-R diagram for stars in general. Note that most stars lie on the main sequence, very few have evolved “away” from the main sequence. S Nor is a yellow supergiant member of the cluster. Actually it is a pulsating Cepheid variable star. ...
... open star cluster NGC 6087 is identical to the H-R diagram for stars in general. Note that most stars lie on the main sequence, very few have evolved “away” from the main sequence. S Nor is a yellow supergiant member of the cluster. Actually it is a pulsating Cepheid variable star. ...
Interpreting the HR diagram of stellar clusters
... In fact, it seems that stars are usually born in big groups, as members of a cluster of stars. All the stars in the cluster form at about the same time. So, if we look at a cluster, we see a bunch of stars which are all roughly the same age. However, the stars do not all have the same mass: most ten ...
... In fact, it seems that stars are usually born in big groups, as members of a cluster of stars. All the stars in the cluster form at about the same time. So, if we look at a cluster, we see a bunch of stars which are all roughly the same age. However, the stars do not all have the same mass: most ten ...
Perseus (constellation)
Perseus, named after the Greek mythological hero Perseus, is a constellation in the northern sky. It was one of 48 listed by the 2nd-century astronomer Ptolemy and among the 88 modern constellations defined by the International Astronomical Union (IAU). It is located in the northern celestial hemisphere near several other constellations named after legends surrounding Perseus, including Andromeda to the west and Cassiopeia to the north. Perseus is also bordered by Aries and Taurus to the south, Auriga to the east, Camelopardalis to the north, and Triangulum to the west.The galactic plane of the Milky Way passes through Perseus but is mostly obscured by molecular clouds. The constellation's brightest star is the yellow-white supergiant Alpha Persei (also called Mirfak), which shines at magnitude 1.79. It and many of the surrounding stars are members of an open cluster known as the Alpha Persei Cluster. The best-known star, however, is Algol (Beta Persei), linked with ominous legends because of its variability, which is noticeable to the naked eye. Rather than being an intrinsically variable star, it is an eclipsing binary. Other notable star systems in Perseus include X Persei, a binary system containing a neutron star, and GK Persei, a nova that peaked at magnitude 0.2 in 1901. The Double Cluster, comprising two open clusters quite near each other in the sky, was known to the ancient Chinese. The constellation gives its name to the Perseus Cluster (Abell 426), a massive galaxy cluster located 250 million light-years from Earth. It hosts the radiant of the annual Perseids meteor shower—one of the most prominent meteor showers in the sky.