The information that the temperature, composition and motion of a star provides.
What information do the temperature, composition and motion of the stars provide?
Working with surface erosion of the inner planets of the Solar System.
List the most important causes of surface erosion. Rate Earth, Venus, Mars and the Moon in order of decreasing rate of erosion.
A.) How can a spectrogrph be used to indicate that the rings of Saturn are not solid? B.) Astronomers in the 1940's had difficulty measuring the amount of water in the Martian atmosphere spectroscopically, becuase the Earth's atmospheric water got in the way. They could not yet fly above our atmosphere. How could the spectral l ...continues
a.) Draw a space-time diagram for a piston moving back and forth in a cylinder. (use the line of motion of the piston for the space coordinate)...a description of how one might make such a diagram would be sufficiant. b.) Clocks A and B are synchronized and the clock A is sent on ten fast earth orbits and brought back. Now that ...continues
Rotation and revolution...retrograde
a.) Most bodies in the solar system perform the usual eastward rotation and revolution, with both axis roughly parrallel. State three that deviate from this norm. b.) What in your opinion are the 2 bodies in the solar system, not including earth, that are the most likely to support life? For each, give two reasons why it might ...continues
a.) Briefly describe three ways that distances to stars can be measured. b.) Name an object, not man made , that emits light in pulsars similar to those from a pulsar. Any wavelegnth is okay. Could we detect these pulses if they came from Jupiter? From a nearby star? c.) Name a type of expansion (or expanding object) that ...continues
Declination and right ascension
I'm stuck on this multiple choice question: Which of the following could be the equitorial co-ordinates of a star that rises to the south of east when viewed from 48 degrees north latitude, and 88 degrees west longitude? a declination 60, right ascension 13 hours b declination 30, right ascension 6 hours c declination -3 ...continues
What does it mean when scientist said reality is rational?
You have a powerful laser beam that you can use to measure distances to objects near earth. The laser beam is a short pulse. You aim the laser beam at a far away object and at time t=0 you trigger a pulse. You measure the arrival of the return pulse that reflects off the object about apoproximately 2.5 seconds later, t=2.5 secon ...continues
Two stars A and B have the same Luminosity and Surface Temperature which turn out to be 3 times the Luminosity of the Sun. Star A is 10 L-Y away from the Sun and Star B is 150 L-Y away from the Sun. Which star will appear brighter in the Night Sky, A or B? How many times brighter would the brighter star appear to be in compariso ...continues
