Spiral Disk

Black Holes
Black Holes
Black Holes Table of Contents I. What are black holes? II. Where do they come from? III. Interesting facts about black holes. IV. How are they discovered? A. X-ray Emissions B. Exotic Energy Sources C. Star speeds D. Masers E. The Baseline Array F. Hubble Telescope G. Satellites V. Quasi-Stellar Relations VI. Locations A. M87 B. Milky Way C. Andromeda D. ?????? E. NGC 6240 F. A0620-00 What are black holes? Black holes are the remains of a massive star that has collapsed and shrunk to a tiny poi
Black Holes
Black Holes
Black Holes On December 3, 1995, astronomers using the Hubble Space Telescope identified a black hole in the galaxy NGC 4621, located 100 million light-years from Earth in the direction of the constellation Virgo. This is the second super-massive black hole that astronomers using the Hubble Space Telescope have found. Astronomers believe that the mass of this black hole is about 1.2 billion times the mass of our sun, but it is concentrated in a space that is not any bigger than our solar system
VCR And DVD
VCR And DVD
VCR and DVD INTRODUCTION This report will strive to clearly discern the differences between the average home Video Cassette Recorder (VCR) and the recently developed Digital Video Disc (DVD) system. These two home entertainment components have very clear differences. It is important for consumers to carefully consider each of these concerns before deciding on the home entertainment component that is right for them. When considering the purchase of a home VCR or DVD system, consumers should care
Bats
Bats
Bats Prepared By: C4 8th Grade 01-05-97 Contents 1. Title Page Page... 1 2. Contents Page... 2 3. Bat Facts Page... 3-4 4. Congress Ave. Bridge Page... 5-6 5. How To Get A Bat Out Of Your House Page... 6 6. About Bat Houses Page... 7 7. References Page... 8+ My report is on bats. I will start my story off by telling you some facts about bats. Bat Facts 1. Did you know that the worlds smallest mammal is a Bumblebee bat that lives in Thailand. It weighs less than a penny! 2. Vampire bats adopt orp