CelestialSphere02
... after, or come up before it. If they go down after, we see them in the evening. ...
... after, or come up before it. If they go down after, we see them in the evening. ...
Galaxy and Beyond
... the Sun (can range from 30 - 50 Aus) Astronomical Unit (AU) - is distance b/w Earth & Sun (about 93 million miles) ...
... the Sun (can range from 30 - 50 Aus) Astronomical Unit (AU) - is distance b/w Earth & Sun (about 93 million miles) ...
Stella Finger Prints
... Analyze and predict trends from data. Background: Now that you know how astronomers use light to collect information from the universe, let’s look at stars by themselves. All stars start out in a specific place, called a nebula (plural is nebulae). Nebulae are large areas of gas and dust where sta ...
... Analyze and predict trends from data. Background: Now that you know how astronomers use light to collect information from the universe, let’s look at stars by themselves. All stars start out in a specific place, called a nebula (plural is nebulae). Nebulae are large areas of gas and dust where sta ...
Stellar Evolution
... All stars rotate and thus have angular momentum. When a star loses most of its mass in a supernova, the remaining neutron star rotates very quickly. The fastest observed neutron star rotates at 716 revolutions per second. ...
... All stars rotate and thus have angular momentum. When a star loses most of its mass in a supernova, the remaining neutron star rotates very quickly. The fastest observed neutron star rotates at 716 revolutions per second. ...
2.1 Introduction
... frame based on very distant objects such as quasars is not the same from year to year (see Figure 2.2). This is proper motion, reflecting the fact that the positions of stars within the Galaxy are not fixed. For example, the whole Galactic disk rotates with a circular velocity vrot = 220 km s−1 at t ...
... frame based on very distant objects such as quasars is not the same from year to year (see Figure 2.2). This is proper motion, reflecting the fact that the positions of stars within the Galaxy are not fixed. For example, the whole Galactic disk rotates with a circular velocity vrot = 220 km s−1 at t ...
Our Galaxy, the Milky Way Galaxy
... Gas permeates the entire Milky Way Galaxy (and any other galaxy) o 75% atomic hydrogen (just hydrogen atoms) and 25% helium o Known as ISM (aka Interstellar Medium) o Gas does not even feel gravity (because it is so diffuse) o Gas is moving around randomly because of this o Radiation pressure is pus ...
... Gas permeates the entire Milky Way Galaxy (and any other galaxy) o 75% atomic hydrogen (just hydrogen atoms) and 25% helium o Known as ISM (aka Interstellar Medium) o Gas does not even feel gravity (because it is so diffuse) o Gas is moving around randomly because of this o Radiation pressure is pus ...
Aspire: Star Life Cycle - Easy Peasy All-in
... Our Sun Vega Sirius B I. Click on the image to start the next activity. ...
... Our Sun Vega Sirius B I. Click on the image to start the next activity. ...
Ch2a
... days which is slightly less than 1 degree per day actually 0.98 degrees/day. Now, the Earth also spins on it’s axis 360 degrees in 24 hours which works out to be 15 degrees per hour, or 15 degrees/60 min = 0.25 degrees/minute. So, if you want to see the stars in exactly the same place in the sky as ...
... days which is slightly less than 1 degree per day actually 0.98 degrees/day. Now, the Earth also spins on it’s axis 360 degrees in 24 hours which works out to be 15 degrees per hour, or 15 degrees/60 min = 0.25 degrees/minute. So, if you want to see the stars in exactly the same place in the sky as ...
Topic E: Astrophysics E1 Introduction to the Universe.
... Defined by making a triangle between the Earth, the Sun and a distant object. If the angle at the distant object is 1 arcsec then it would be 1 parsec away. (more later) E.1.2 - Distinguish between a stellar cluster and a constellation E.1.4 - Compare the relative distances between stars within a ...
... Defined by making a triangle between the Earth, the Sun and a distant object. If the angle at the distant object is 1 arcsec then it would be 1 parsec away. (more later) E.1.2 - Distinguish between a stellar cluster and a constellation E.1.4 - Compare the relative distances between stars within a ...
The Milky Way
... • According to the density-wave theory, spiral arms are created by density waves that sweep around the Galaxy • The gravitational field of this spiral pattern causes stars and gas to slow down near the arm • This compresses the interstellar clouds, triggering the formation of stars • The entire arm ...
... • According to the density-wave theory, spiral arms are created by density waves that sweep around the Galaxy • The gravitational field of this spiral pattern causes stars and gas to slow down near the arm • This compresses the interstellar clouds, triggering the formation of stars • The entire arm ...
Folie 1 - univie.ac.at
... satellites provides improved time coverage and two- color information: one satellite carries a blue and the other a red filter. The 20cm cube structure houses three orthogonal reaction wheels and three magnetorquer coils for three-axis attitude control and momentum dumping. Attitude determination is ...
... satellites provides improved time coverage and two- color information: one satellite carries a blue and the other a red filter. The 20cm cube structure houses three orthogonal reaction wheels and three magnetorquer coils for three-axis attitude control and momentum dumping. Attitude determination is ...
The Life Cycle of a Star Webquest
... Drag the view finder on a black hole and then click BEGIN YOUR VOAGE. Journey to either one of the black hole choices. Which one did you choose? ___________________ ...
... Drag the view finder on a black hole and then click BEGIN YOUR VOAGE. Journey to either one of the black hole choices. Which one did you choose? ___________________ ...
The Dramatic Lives of Stars
... Given the position of young stars in the HR diagram, which of the following is true? A 0.5 solar mass star mostly: ...
... Given the position of young stars in the HR diagram, which of the following is true? A 0.5 solar mass star mostly: ...
Stars_and_Galaxies
... Gravity gathers hydrogen gas and particles of dust, and the clouds grow more dense. The hydrogen heats up to a fantastic 18 million degrees. Nuclear fusion turns hydrogen to helium and the fire ignites. T or F. Gravity is always at work, trying to crunch the star down. Stellar age is determined by t ...
... Gravity gathers hydrogen gas and particles of dust, and the clouds grow more dense. The hydrogen heats up to a fantastic 18 million degrees. Nuclear fusion turns hydrogen to helium and the fire ignites. T or F. Gravity is always at work, trying to crunch the star down. Stellar age is determined by t ...
Chapter 15 (Star Lives)
... A. all have the same age. B. all have the same mass. C. all have the same chemical composition. D. are at different stages of their lives. 2. In making a model of a star, an astronomer does NOT have to know or assume: A. that the energy given off is produced in the interior. B. the mass of the star. ...
... A. all have the same age. B. all have the same mass. C. all have the same chemical composition. D. are at different stages of their lives. 2. In making a model of a star, an astronomer does NOT have to know or assume: A. that the energy given off is produced in the interior. B. the mass of the star. ...
Weathering, Erosion and Mass Movement
... solar spectrum are caused by different chemical elements which absorb light at specific wavelengths. ...
... solar spectrum are caused by different chemical elements which absorb light at specific wavelengths. ...
File - SMIC Physics
... • If the collapsed core of a supernova is > 3 times the mass of Sun → continue to collapse → until it becomes a point → gravity near this mass is so strong that nothing can escape from it, not even light → black hole • Black hole is not like a giant vacuum cleaner sucking in distance objects • Only ...
... • If the collapsed core of a supernova is > 3 times the mass of Sun → continue to collapse → until it becomes a point → gravity near this mass is so strong that nothing can escape from it, not even light → black hole • Black hole is not like a giant vacuum cleaner sucking in distance objects • Only ...
Stellar kinematics
Stellar kinematics is the study of the movement of stars without needing to understand how they acquired their motion. This differs from stellar dynamics, which takes into account gravitational effects. The motion of a star relative to the Sun can provide useful information about the origin and age of a star, as well as the structure and evolution of the surrounding part of the Milky Way.In astronomy, it is widely accepted that most stars are born within molecular clouds known as stellar nurseries. The stars formed within such a cloud compose open clusters containing dozens to thousands of members. These clusters dissociate over time. Stars that separate themselves from the cluster's core are designated as members of the cluster's stellar association. If the remnant later drifts through the Milky Way as a coherent assemblage, then it is termed a moving group.