http://www.pbs.org/deepspace/timeline/Related: Timeline tools and resources.
Timeline of Art History - Skip to primary content Skip to secondary content Having trouble viewing this page? Daylight Hrs Explorer Shows the hours of daylight received during the year for an observer at a given latitude. This is an important factor contributing to the seasons. Running this animation on your computer... right-click to download daylighthoursexplorer.swf and daylighthoursexplorer.html to the same directory open the html file in a browser to run the animation Linking to this animation...
Video Courses on Academic Earth Astronomers use tools like telescopes, cameras and spectrographs to study interactions between materials and energy within the universe. These scientists learn about galaxies, solar systems, planets and stars through careful observation and measurement recording. Astronomers also refer to natural sciences and mathematics to form and test theories. An integral part of a student’s astronomy experience is the quality of equipment and facilities they have access to. Astronomy departments at the University of Hawaii at Manoa, Harvard University and the University of Tokyo give students access to some of the best observatories in the world. The quality of a school’s facility will determine much of an astronomy student’s intellectual development and research abilities, so these factors should play a role in one’s decision to apply to a specific program.
In Charted Waters - Evolution of the World Map as it was Explored Maps are among the most accessible assets we can use accurately, whether it’s an old print or the newest mobile app. Still, it took centuries for people to truly understand the geography of the world. Here, we show how our knowledge has grown and developed over time… Scroll to begin the journey Atlantic Ocean Mediterranean Sea Holocaust Timeline Jump to: 1938 1939 1940 1941 1942 1943 1944 1945 1933 January 30, 1933 - Adolf Hitler is appointed Chancellor of Germany a nation with a Jewish population of 566,000. February 22, 1933 - 40,000 SA and SS men are sworn in as auxiliary police. February 27, 1933 - Nazis burn Reichstag building to create crisis atmosphere. February 28, 1933 - Emergency powers granted to Hitler as a result of the Reichstag fire.
Radio telescopes capture best-ever snapshot of black hole jets An international team, including NASA-funded researchers, using radio telescopes located throughout the Southern Hemisphere has produced the most detailed image of particle jets erupting from a supermassive black hole in a nearby galaxy. "These jets arise as infalling matter approaches the black hole, but we don't yet know the details of how they form and maintain themselves," said Cornelia Mueller, the study's lead author and a doctoral student at the University of Erlangen-Nuremberg in Germany. The new image shows a region less than 4.2 light-years across -- less than the distance between our sun and the nearest star. Radio-emitting features as small as 15 light-days can be seen, making this the highest-resolution view of galactic jets ever made. The study will appear in the June issue of Astronomy and Astrophysics and is available online. Mueller and her team targeted Centaurus A (Cen A), a nearby galaxy with a supermassive black hole weighing 55 million times the sun's mass.
The History and Geography of Inventions [Home Page][Other Page] [Search Inventions] [Before 10,000 BC][10,000 BC to 4000 BC][4000 BC to 3000 BC][3000 BC to 2000 BC][2000 BC to 1000 BC][1000 BC to 1 BC][1 AD to 1000 AD][1000 to 1500][1500 to 1700][1700 to 1800][1800 to 1850][1850 to 1900][1900 to 1950][Since 1950] [Inventions][Biographies][Religions of the World][Bible Contradictions][Rain][Countries of the World][Cookery][Music][Composers (Opera)] [Readers' Feedback (Religion)] [Language][Travel][Eclipses][London][Astronomy][Mathematics][Physics][Chemistry][Biology][Football][Television][Other] Medieval English Literature Timeline 43-600 CE: The British Invasions First came the Romans, who brought Christianity and built Hadrian's Wall. This wall protects Britain from the northern barbarians, known as the Picts. But they say "buh-bye" in 400 and hustle off in their skirty armor to protect their own capital. That means the Brits were left to subsequent waves of invasions all by their lonesome.
Geologic and Biological Timeline of the Earth Astronomical and geological evidence indicates that the Universe is approximately 13,700 million years old, and our solar system is about 4,567 million years old. Earth's Moon formed 4,450 million years ago, just 50 million years after the Earth's formation. Because the composition of the rocks retrieved from the Moon by the Apollo missions is very similar to rocks from the Earth, it is thought that the Moon formed as a result of a collision between the young Earth and a Mars-sized body, sometimes called Theia, which accreted at a Lagrangian point 60° ahead or behind the Earth. A cataclysmic meteorite bombardment (the Late Heavy Bombardment) of the Moon and the Earth 3,900 million years ago is thought to have been caused by impacts of planetesimals which were originally beyond the Earth, but whose orbits were destabilized by the migration of Jupiter and Saturn during the formation of the solar system.
Brief Answers to Cosmic Questions Structure of the Universe Does the Universe have an edge, beyond which there is nothing? Are the galaxies arranged on the surface of a sphere? Why can't we see the whole universe? Explore Nature» Air Resources Division-Natural Lightscapes The darker the sky, the more stars can be seen. The following simulated images depict how the constellation Orion appears under various sky conditions. Images are courtesy of GLOBE at Night. How good is your sky at home? Limiting Magnitude=2. This is typical of an urban sky.