Science & Weather
Beginning of The Digital Age
Observing Satellites -

6:51 AM

7:12 AM

7:14 AM
Transit of Venus on June 8, 2004
Solar Images taken with a Sony Digital Mavica, MVC-FD91 Shooting through a #10 arc welding filter. 1/180, f=11

Watch the International Space Station with the unaided eye!
Washington, DCHarrisburg, PAFort Myers, FLPortland, ORHundreds More!

Try Using Barley Straw To Control Algae In Backyard Ponds

OK, mosquitoes...prepare to be repelled!!!!!

HubbleSite is produced by the Space Telescope Science Institute’s Office of Public Outreach.

Astronomy Picture of the Day
(APOD) is originated, written, coordinated, and edited in 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, and 2003 by Robert Nemiroff and Jerry Bonnell. The APOD archive contains the largest collection of annotated astronomical images on the internet.

In real life, Bob and Jerry are two professional astronomers who spend most of their time researching the universe. Bob is an associate professor at Michigan Technological University in Houghton, Michigan, USA, while Jerry is a scientist at NASA's Goddard Space Flight Center in Greenbelt, Maryland USA

Is a service featuring an interactive world atlas, information on local time as well as sunrise and sunset times in several hundred cities, and a database of public holidays worldwide.

Times of sunrise/sunset, moonrise/moonset, twilight, and other astronomical data are available from USNO's Astronomical Applications Department has free viewable and printable topographic maps and aerial photos of the entire country.  Aerial photos area allows zooming to 1 meter per pixel on your computer screen.  This lets you easily see houses and cars.
Click the samples below!
Aerial Photos: Musser, Fetrow, Bentzel farms.               
Aerial Photos: Key West, Chokoloskee, Fort Jefferson,

                        Fisheating Bay, North Lake Estates, Fl.

Sun watchers and anyone with an interest in astronomy or space weather will want to check out the Windows to the Universe Web site from the University of Michigan. 
NASA SkyWatch is a web-based Java application
(Please allow sufficient time for all files to download the first time you access NASA SkyWatch.)
You will be downloading approximately 300 K of data that provides sky watchers worldwide with a picture of when and where the International Space Station, the space shuttle and other spacecraft can be seen with the unaided eye as they pass overhead.

Peet Bros. offers a variety of attractive, easily-installed and long-lasting weather instruments: anemometers to measure wind speed and wind direction; rain gauges; pressure sensors for barometric pressure and barometric pressure change; and humidity sensors for relative humidity and dew point.

Text Satellite Sighting Information  Published by the Johnson Space Center, Flight Design and Dynamics Division, Orbit Flight Dynamics Group.

 A Space Station with a View This link was e-mailed to me and it is wondrous to behold.  We underestimate the power of the lights that shine at night.  The image is a panoramic night view of the world from the new space station. 
   Note:  Be sure to scroll East West and North South.
  Some things to look for as you view the map:
  1. Canada's population is almost exclusively along the U.S. border.
  2. Moving east to Europe, there is a high population concentration along the coast of the Mediterranean.
  3. Check out the development of Israel compared to the rest of the Arab countries.
  4. Note the Nile River.
  5. The Outback of Australia.
  6. The TransSiberian Rail Route.
  7. Most striking is the difference between North and South Korea.

Satellite Images of Earth at Night International Dark-Sky Association

Try this Weather Radar site, it is my favorite!
Set it up for your location save as Bookmark or Favorite! Try the Java Loop it take some time to load but when the weather is changing it is very interesting. Note: Use the "Help and Location Selector" on the intellicast page!

Home Planet, a comprehensive astronomy / space / satellite-tracking package for Microsoft Windows 95/98. Home Planet is in the public domain; it is free software. It is not shareware--you don't have to register it or pay anybody, and the version you download is fully functional as soon as you install it.

Latitude/Longitude Position Finder Use this resource to identify the latitude and longitude position of any point within the United States.

History of Computing Information Information about the history of computing, assembled by Mike Muuss for your information and edification. Documents from the home of the ENIAC -- The U. S. Army Research Lab.

Tennessee State University Automated Astronomy Group

Vienna Wireless Society: - Balloon Flight VWS-2 launched from Front Royal, VA balloon rose to an altitude in excess of 98,000. Some of the near-space photos are remarkable, including some classic
"curvature of the earth" shots.

National Capital Astronomers
Prairie Astronomy Club

The Last Eclipse of the 2nd Millennium!

Beginning of The Digital Age

Located between US Route 1 and the B&O Railroad tracks near the intersection with Ritz Way about 1 mile north of Beltsville, MD.

Morse, Samuel F. B. (Finley Breese)  1791 -- 1872 Painter, inventor; born in Charlestown, Mass. He began as a painter, studying in England under Washington Allston and Benjamin West (1811).  In New York (1832), he began his many electrical experiments. From 1835 to 1838 he invented the telegraph, a method of transmitting a series of dots and dashes, representing the alphabet, over telegraph lines by means of electromagnets. In 1843 the U.S. Congress appropriated $30,000 for Morse to construct an experimental telegraph line between Washington, D.C., and Baltimore, Maryland. The line was successfully installed, and on May 24, 1844, Morse sent the first message: "What hath God wrought!" Morse was subsequently involved in much litigation over his claim to the invention of the telegraph, and the courts decided in his favor. He received many honors. Later he experimented with submarine cable telegraphy.  He also introduced the daguerreotype, a photographic process, to America (1839). Today he is honored for his work as both a painter and an inventor. 

Fort Laramie National Historic Site

Crossroads of a Nation Moving West
Fort Laramie was perhaps the single most important location in America's expansion into the west. Founded in 1834 as a trading post, it became a military fort in 1849. Until it closed in 1890, Fort Laramie influenced major evens in the history of the Trans-Mississippi West. From the eras of the fur trade, the Oregon Trail and the Indian Wars, the fort served as an American foothold in a rapidly changing west.

Electrical Engineering Milestone
Transcontinental Telegraph

Between July 4 and October 24, 1861. A telegraph line was constructed by the Western Union Telegraph Company between St. Joseph, Missouri and Sacramento California. Thereby completing the fires high speed communications link between the Atlantic and the Pacific coasts. This service met the critical demand for fast communication between these two areas, This telegraph line operated until May, 1869. When it was replaced by a multi-wire system constructed with the Union Pacific and Central Pacific Railroad line.

The Transcontinental Telegraph reached Fort Laramie from the East on August5, 1861. From then until May 1869 Fort Laramie was a major station on the telegraph line. Soldiers from Fort Laramie protected the line, made repairs, and operated remote repeater stations from Julesburg, Colorado (150 miles to the East) to South Pass, Wyoming (300 miles to the West).

"Pacific Telegraph Act of 1860"

"An Act to Facilitate Communication between the Atlantic and Pacific States by Electric Telegraph"


Besides a very organized Periodic Table, you will learn lots
of information about any periodic element you click on.

Periodic Table of the Elements

H He
Li Be B C N O F Ne
Na Mg Al Si P S Cl Ar
K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
Fr Ra Ac Unq Unp Unh Uns Uno Une
Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu
Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr
Name Number Weight
Melts Boils

Metals A solid substance that is a good conductor of heat and electricity. Can be formed into many shapes.
Metalloid "Middle elements" - conduct heat and electricity better than nonmetals, but not as well as metals. Easier to shape than nonmetals, but not as easy as metals. Solid at room temperature.
Nonmetals A poor conductor of heat and electricity. Not easily formed into shapes.

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Last updated  June 13, 2007