Today in History Site
	Marsanne Petty BellaOnline's Today in History Editor

Chernobyl Disaster (April 26, 1986)
In 1979, TMI in Middletwon, PA, had a meltdown that released virtually no radiation into the atmosphere. Still, the government took precautions and evacuated the residents. In 1986, Chernobyl's reactor number 4 exploded, but nothing was really done about it. What caused the disaster?

Dmitri Mendeleev’s Periodic Table (March 6, 1869)
Dmitri Mendeleev made an important discovery regarding the elements. From that discovery, he hypothesized and theorized and developed what, today, students and professionals alike refer to as The Periodic Table of Elements.

Ganymede´s Discovery (January 13, 1610)
During a time when disbelief in the ancient teachings of astronomy were punishable by death, Galileo Galilei dared to denounce the teachings of the Church and develop his own ideas and theories. His discoveries and inventions furthered modern astronomy, beginning with his discovery of Ganymede.

Hindenburg Disaster (May 6, 1937)
The explosion of the Hindenburg was one of the greatest airship disasters of all time, though, it was not the worst one by far. What was the cause? Could it have been avoided? Just how bad was it?

Meltdown at TMI (March 28, 1979)
The worst kind of nuclear accident--a meltdown--occurred at one of the nation´s leading nuclear facilities, Three Mile Island in Middletown, PA. What really happened that day and how did it change operations?

Remembering the Challenger (January 28, 1986)
On January 28, 1986, five men and two women smiled and waved to cameras as the entered the Space Shuttle Challenger. Within two minutes after launch, however, their lives ended in a disaster that rocked the 1980´s.

Revisiting Roswell (July 8, 1947)
Did aliens really crash down in Roswell, NM in July of 1947? What are the -real- facts of the Roswell case? Was it really a government cover-up? Or was the entire event staged by the government to fund UFO research?

The Tunguska Event (June 30, 1908)
At approximately 7:15am on June 30, 1908, a large explosion devastated vegetation in a 2,150 square kilometer area of the Tunguska River Basin. The blast was estimated to be between 10 and 15 megatons, yet no crater has been found. What caused this blast? What does the evidence say...