Because its density is so high, neutrons spin in the same way that electrons do so must obey the Pauli Exclusion Principle. 6. A pulsar does not pulse, it emits beams of radiation that sweep around the sky as the neutron star rotates, and astronomers detect pulses when they sweep over the Earth. 11. Sometimes in binary systems, mass flows into a hot accretion disk around the neutron star and causes the emission of x rays.
Telescopes also indicated mountains and craters on the moon. Future telescopes have discovered geography and weather on the planets in our solar system. Telescopes have also exposed new planets and asteroids. These devices helped us make the first legitimate measurement of the speed of light. Telescopes have also assisted us to comprehend gravity and other vital laws of the physical world.
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
This new object had its own moon and is actually bigger than Pluto. This new discovery by Brown was give the name UB313 and since its discovery along with the continued exploration of the Kupier Belt, turned up other objects named Quaoar, in 2002 and Sedna in 2004. Based on the understanding that Pluto is a planet than it stands to reason that anything larger than it is a planet as well. This opened the door to astronomers to be able to add additional planets to our solar system, instead of classifying them as dwarf planets or asteroids. In
Astronomy is a natural science which is the study of celestial objects, the physics, chemistry, and evolution of such objects, and phenomena that originate outside the atmosphere of Earth, including supernovae explosions, gamma ray bursts, and cosmic microwave background radiation. cosmology, is concerned with studying the universe as a whole. Astronomy is one of the oldest sciences. The early civilizations in recorded history, such as the Babylonians, Greeks, Indians, Egyptians, Nubians, Iranians, Chinese, and Maya performed methodical observations of the night sky. However, the invention of the telescope was required before astronomy was able to develop into a modern science.
Cladius used the term epicycle to help describe retrograde motion. His model was called epicycle on deferent. In his explanation, the earth is stationary and the planets, moon, and sun rotate and orbit around it. So the line of sight makes it seems as though the planet has stopped and reversed. An astronomer names Nicolaus Copernicus the proved Cladius’ theory incorrect.
Describe two differences between ptolemy’s and Copernicus’s models- What is at the centre of the model and the way in which the planets followed smaller circles in their orbits in ptolemy’s model. 3. Describe two similarities between the two models- The number of planets and the circular orbits are the same. 4. Suggest one way in which our current model of the solar system is different from Copernicus’s- There are more planets because we have more scientific equipment to look out further into space so we discover new things in space.
Physical size = angular size x 2 x distance / 360 • Understand that constellations are groups of stars as seen from the Earth – the stars may not be close to each other at all • Our view of the celestial sphere is determined by where we stand on the Earth o Study the diagrams that show the path of stars as they rise and set and how those paths appear to differ depending on your location on the Earth • Know what causes the seasons (tilt of the Earth’s axis to it’s orbital plane) o Depend on how Earth’s axis affects the directness of sunlight o Sun’s altitude is also higher in Summer and Lower in Winter Summer solstice – highest path Winter solstice – lowest path Equinoxes – sun rises at exactly due east and sets exactly due west • Review the Moon’s phases • New Moon • Waxing (Right side of moon visible) o Waxing
Numerous theories were proposed by scientists or religions to explain the beginning of the universe. They were questioned by people believed for their integrity. The big bang theory was challenged by many too, but it has become the model that the scientific community has widely accepted to explain the birth of the universe as it is backed up by many evidences. According to the theory, there is a finite age to the universe. At the very start, the entire universe was about a size of an atom.
Meteorites likely traveled in space for millions of years before visiting us here on Earth. They were bathed in cosmic rays, but are not dangerous or radioactive. If your rock looks just like other Earth rocks, it probably is one. Meteorites look and feel different from the ordinary rocks around them. Recently fallen