Astronomy Objectives
... The Hubble Law; state it and describe the evidence that supports it Big Bang Theory: be able to explain how the universe was formed according to this theory; know the particles formed at each step, but not specific times or temperatures ...
... The Hubble Law; state it and describe the evidence that supports it Big Bang Theory: be able to explain how the universe was formed according to this theory; know the particles formed at each step, but not specific times or temperatures ...
ISP 205 Review Questions, Week 10
... more luminous than the other, what are the relative diameters of the two stars? Luminosity = (surface area) (Energy emitted per unit surface area) If the temperatures are the same, the energy emitted per unit surface will be the same. So the more luminous star must have 10,000 times more surface a ...
... more luminous than the other, what are the relative diameters of the two stars? Luminosity = (surface area) (Energy emitted per unit surface area) If the temperatures are the same, the energy emitted per unit surface will be the same. So the more luminous star must have 10,000 times more surface a ...
The Brightness of Stars
... Stars that are cool, ~3500K, will be reddish; stars that are hot, ~10,000K, will be white White light is a combination of all colors, so a hot star will appear brighter than a red star, all other things being equal, because not all light from a star is visible to the human eye – This fact obscures a ...
... Stars that are cool, ~3500K, will be reddish; stars that are hot, ~10,000K, will be white White light is a combination of all colors, so a hot star will appear brighter than a red star, all other things being equal, because not all light from a star is visible to the human eye – This fact obscures a ...
Monday, April 15
... – If a star is actually closer than 10pc, its absolute magnitude will be a bigger number, i.e. it is intrinsically dimmer than it appears – If a star is farther than 10pc, its absolute magnitude will be a smaller number, i.e. it is intrinsically brighter than it appears ...
... – If a star is actually closer than 10pc, its absolute magnitude will be a bigger number, i.e. it is intrinsically dimmer than it appears – If a star is farther than 10pc, its absolute magnitude will be a smaller number, i.e. it is intrinsically brighter than it appears ...
un Facts About Venus F
... It’s named after the Roman goddess of love and beauty. It’s the only planet named after a female. It has no moons or rings Unlike most other planets, it rotates clockwise (retrograde rotation). Billions of years ago its climate may have been similar to Earth One day on Venus is longer than one year ...
... It’s named after the Roman goddess of love and beauty. It’s the only planet named after a female. It has no moons or rings Unlike most other planets, it rotates clockwise (retrograde rotation). Billions of years ago its climate may have been similar to Earth One day on Venus is longer than one year ...
A Red Giant - Cloudfront.net
... Stars like our Sun Stars with masses similar to our Sun fuse at a rate that allows them to “live” as mainsequence stars for about 10 billion years. Then they run out of Hydrogen in their core Hydrostatic Equilibrium is lost… They Shrink a bit And begin to fuse Hydrogen into Helium in a shell outsid ...
... Stars like our Sun Stars with masses similar to our Sun fuse at a rate that allows them to “live” as mainsequence stars for about 10 billion years. Then they run out of Hydrogen in their core Hydrostatic Equilibrium is lost… They Shrink a bit And begin to fuse Hydrogen into Helium in a shell outsid ...
The Life Cycle of a Star Webquest:
... 15. What is the scientific name for the twinkling of stars? ___________________________ 16. Why do stars twinkle? ____________________________________________________________ _____________________________________________________________________________________ 17. Why don’t planets twinkle? ________ ...
... 15. What is the scientific name for the twinkling of stars? ___________________________ 16. Why do stars twinkle? ____________________________________________________________ _____________________________________________________________________________________ 17. Why don’t planets twinkle? ________ ...
ppt
... Cepheids as Distance Markers • This relationship allows us to work out how much brighter than the Sun the star is • From there we can calculate how much further away the star must be than the Sun to make it the brightness we see from Earth • Delta Cephei shows has a period of about 5 days • This is ...
... Cepheids as Distance Markers • This relationship allows us to work out how much brighter than the Sun the star is • From there we can calculate how much further away the star must be than the Sun to make it the brightness we see from Earth • Delta Cephei shows has a period of about 5 days • This is ...
Stars and Galaxies - Earth Science: Astronomy
... A. Galaxy—gravity holds together a large collection of stars, gas, and dust 1. Earth’s galaxy is Milky Way which is part of a galaxy cluster named the Local Group 2. Spiral galaxies—spiral arms wind out from inner section; some have barred spirals with stars and gas in a central bar ...
... A. Galaxy—gravity holds together a large collection of stars, gas, and dust 1. Earth’s galaxy is Milky Way which is part of a galaxy cluster named the Local Group 2. Spiral galaxies—spiral arms wind out from inner section; some have barred spirals with stars and gas in a central bar ...
LT 5: I can describe how astronomers determine the composition
... Parallax: an apparent shift in the position of an object when viewed from different locations ...
... Parallax: an apparent shift in the position of an object when viewed from different locations ...
File - Mr. Goodyear Astronomy
... Stage 6 Planetary Nebula / Nova - star uses up most of He and moves back toward main sequence area of H-R diagram. - Star fluctuates on and off main sequence. Gravity tries to contact star creating other elements in star increasing fusion process. - This increase energy causes an explosion-like occ ...
... Stage 6 Planetary Nebula / Nova - star uses up most of He and moves back toward main sequence area of H-R diagram. - Star fluctuates on and off main sequence. Gravity tries to contact star creating other elements in star increasing fusion process. - This increase energy causes an explosion-like occ ...
1 - WordPress.com
... 6. What two star characteristics does the Hertzsprung-Russell diagram compare? 7. What is a star’s spectrum? ...
... 6. What two star characteristics does the Hertzsprung-Russell diagram compare? 7. What is a star’s spectrum? ...
ASTR2050 Spring 2005 • In this class we will cover: Brief review
... Greek letter (in order of brightness) then constellation e.g. α-Orionis is brightest star in Orion (aka Betelgeuse) δ-Cephei is fourth brightest star in Cepheus Variable stars Listed in order of discovery, starting with “R”, then “S” and on through “Z”, then “RR..RZ...SS...SZ...ZZ”, and then “AA...A ...
... Greek letter (in order of brightness) then constellation e.g. α-Orionis is brightest star in Orion (aka Betelgeuse) δ-Cephei is fourth brightest star in Cepheus Variable stars Listed in order of discovery, starting with “R”, then “S” and on through “Z”, then “RR..RZ...SS...SZ...ZZ”, and then “AA...A ...
Life Cycle of a Star
... the size of the star whether it is smaller then our sun, the same size or larger then our sun ...
... the size of the star whether it is smaller then our sun, the same size or larger then our sun ...
Homework Problems for Quiz 1 – AY 5 – Spring 2013
... 12. If a red star and a blue star both have the same radius and both are the same distance from the Earth, which one is brighter in the sky? The blue star produces more energy per unit surface area than the red star based on Stephan’s Law. If the two stars have the same radius, they have the same su ...
... 12. If a red star and a blue star both have the same radius and both are the same distance from the Earth, which one is brighter in the sky? The blue star produces more energy per unit surface area than the red star based on Stephan’s Law. If the two stars have the same radius, they have the same su ...
Ursa Minor
Ursa Minor (Latin: ""Smaller She-Bear"", contrasting with Ursa Major), also known as the Little Bear, is a constellation in the northern sky. Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle, hence the name Little Dipper. It was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and remains one of the 88 modern constellations. Ursa Minor has traditionally been important for navigation, particularly by mariners, due to Polaris being the North Star.Polaris, the brightest star in the constellation, is a yellow-white supergiant and the brightest Cepheid variable star in the night sky, ranging from apparent magnitude 1.97 to 2.00. Beta Ursae Minoris, also known as Kochab, is an aging star that has swollen and cooled to become an orange giant with an apparent magnitude of 2.08, only slightly fainter than Polaris. Kochab and magnitude 3 Gamma Ursae Minoris have been called the ""guardians of the pole star"". Planets have been detected orbiting four of the stars, including Kochab. The constellation also contains an isolated neutron star—Calvera—and H1504+65, the hottest white dwarf yet discovered with a surface temperature of 200,000 K.