- August 24 -

Vesuvius Day

August 24, 2006 was a sad day for Pluto. Formerly known as a planet, Pluto was downgraded to a dwarf planet that day. August 24 is now recognized as Pluto Demoted Day. Use the day as an opportunity to learn about Pluto, its new status and its connection to central Illinois.  These days, Pluto...

Vesuvius Day

August 24, 2006 was a sad day for Pluto. Formerly known as a planet, Pluto was downgraded to a dwarf planet that day. August 24 is now recognized as Pluto Demoted Day. Use the day as an opportunity to learn about Pluto, its new status and its connection to central Illinois.

These days, Pluto is regarded as a dwarf planet. To qualify as a dwarf planet, an object must be fairly round and orbit the sun. Unlike a planet, a dwarf planet has not cleared the area around its orbital path. Also, it is not a satellite, also known as a moon. The decision that cost Pluto its planetary status also outlined three categories of solar system objects: planets, dwarf planets and small solar system bodies.

Clyde William Tombaugh
Clyde William Tombaugh (February 4, 1906 – January 17, 1997) was an American astronomer. Although he is best known for discovering the dwarf planet Pluto in 1930, the first object to be discovered in what would later be identified as the Kuiper belt, Tombaugh also discovered many asteroids; he also called for the serious scientific research of unidentified flying objects.
Source:
http://www.examiner.com/article/august-24-is-pluto-demoted-day
http://en.wikipedia.org/wiki/Clyde_Tombaugh

Categories:

You may also like...

Interesting events from Science category.

Space Shuttle Challenger disaster

The Space Shuttle Challenger disaster occurred on January 28, 1986, when Space Shuttle Challenger (mission STS-51-L) broke apart 73 seconds into its flight, leading to the deaths of its seven crew members. The spacecraft disintegrated over the Atlantic Ocean, off the coast of central Florida at...

Planet Uranus Discovered

Uranus was discovered by the British astronomer, William Herschel on the 13th of March 1781, but initially reported it (on April 26, 1781) as a "comet". Uranus had been observed on many occasions before its recognition as a planet, but it was generally mistaken for a star. He discovered...

Bunsen Burner Day

Bunsen Burner Day is a holiday that commemorates the date of birth of the inventor of the Bunsen Burner. While not enjoying the status of being considered a major holiday in any country or group of countries, Bunsen Burner Day has been observed for a number of years. The holiday occurs on the same...

Loomis Day

Loomis Day commemorates Mahlon Loomis, who patented his wireless telegraphing inventions on May 30, 1872. It’s hard to imagine a world without wireless conveniences such as cell phones and high speed wifi internet, but less than 150 years ago wireless communication was just the wild dream...

International Day of Radiology

The International Day of Radiology (IDoR) is an annual day of observance dedicated to the science and discipline of radiology. It will be observed for the first time on November 8, 2012 and is a joint initiative of the European Society of Radiology (ESR), the Radiological Society of North America...

Wright Brothers Day

On Dec. 17, 1903, Wilbur and Orville Wright successfully flew the first powered flying machine in Kitty Hawk, N.C. Even though the flight lasted for only 12 seconds and 120 feet. On the fourth and final flight of the day, Wilbur traveled 852 feet, remaining airborne for 59 seconds. That morning,...

Download KeepIn Calendar

Enjoy the interesting stories even on your phone or tablet