Chapter 14 1. Radio galaxies have sources of unusually strong radio waves emitted on either side of the galaxy and active galaxies are spirals with small, highly luminous cores like Seyfert galaxies, they also have nuclei that are produced by matter plunging into super-massive black holes. 6. By observing the velocity of the stars that orbit the black hole or by the rotational speed of its accretion disk. 10.
http://solarsystem.nasa.gov/planets/ http://solarsystem.nasa.gov/planets/profile.cfm?Object=SolarSys&Display=Moons http://solarsystem.nasa.gov/planets/profile.cfm?Display=Moons http://nasa.gov use search window to search for topics http://www.go-astronomy.com/planets/planet-moons.htm http://messenger.jhuapl.edu/ http://nineplanets.org/ |What is the hottest planet in our solar system? |Venus | |Which planet has the most
Direct motion and retrograde motion both occur with Mars, direct motion is when the planet seems to be going forward, and retrograde is when it seems to be going backwards. Many astronomers have noticed this and have tried to come to a solution as to why it occurs. Eudoxus of Cnidus Eudoxus of Cnidus came up with the first theory as to why retrograde motion occurs. He thought that there was a system of spheres, a small sphere in the middle on one axis and a larger sphere on another axis; both of the axis’ are offset. The axis of the smaller middle sphere is embedded in the outer sphere so they share the same motion.
Ast 103 Amber Titus Shrinking Moon Lab The moon along with the rest of Earth’s atmosphere has such a major impact of human’s lives. Space has provided natural entertainment of shooting stars, planets, comets, stars, and meteorites. The one space object that has stuck out to me and I am sure others is, the moon. The moon places a huge role in everyday life because we see it rise, set change phases, change colors, etc. With all this change people are constantly questioning certain things about the moon and its origins.
At the very start, the entire universe was about a size of an atom. It was termed by Georges Lemaitre as the “primordial atom”. As one of the pioneers of in the make of the big bang theory, Georges Lemaitre proposed this new theory. At that time, this theory has explained many difficulties that were met by the theories proposed previously. For example, a theory states that the universe is infinitely large with an infinitely amount of stars was met by the Olber’s paradox.
Meteorites are naturally occurring objects that originate in space and survive a fall to the ground through Earth’s atmosphere. (What are meteorites?) Most are remnants of asteroids or possibly comets. However, a few have been shown to be pieces of Moon or Mars that were launched into space by an impact event. While moving through space these objects are known as meteoroids.
In the one of the pictures provided by the NASA which stands for National Aeronautics and Space Administration who were also the ones that assigned the mission Apollo 11, no stars could be seen. But with common sense, one should see brighter stars when you are in outer space right? The authors explains that the conspiracy theorists are wrong.
Under The Astronomic International Union (IAU) definitions, there are eight planets in the Solar System. In order of increasing distance from the Sun, they are the four terrestrials, Mercury, Venus, Earth, and Mars, then the four gas giants, Jupiter, Saturn, Uranus, and Neptune. Originally, there were nine planets in the Solar System. Nowadays, Pluto has been considered as the dwarf planet. Six of the planets are orbited by one or more natural satellites.