- 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.

Bell Patents the Telephone

Where would we be without the telephone? 29-year-old Alexander Graham Bell patented the first telephone March 7, 1876. The first phone call to his assistant was March 10th, 1876. The Scottish-born Bell worked in London with his father, Melville Bell, who developed Visible Speech, a written...

Einstein’s Birth Anniversary

Albert Einstein (14 March 1879 – 18 April 1955) was a German-born theoretical physicist who developed the general theory of relativity, one of the two pillars of modern physics (alongside quantum mechanics). Albert Einstein’s birth in the German Empire city of Ulm. While...

World Contact Day

World Contact Day was first declared on March 1953 by an organization called the International Flying Saucer Bureau, as a day on which all IFSB members would attempt to send a telepathic message into space. The IFSB voted to hold such a day in 1953, theorising that if both telepathy and alien...

International Astrology Day

International Astrology Day (most often observed on either March 20 or March 21) is an annual observance/holiday celebrated by astrologers and astrology enthusiasts. It is seen by astrologers as the beginning (first day) of the astrological year. It is the first full day of the astrological sign of...

Bicycle Day

Bicycle Day Marks Anniversary Of First Acid Trip In History. Swiss chemist Albert Hofmann first synthesized the psychedelic drug Lysergic acid dethylamide (LSD), commonly known as acid, on Nov. 16, 1938, but it was not until April 19, 1943, that he intentionally took the drug and experienced...

World Metrology Day

May 20 is World Metrology Day, commemorating the anniversary of the signing of the Metre Convention in 1875. World Metrology Day celebrates the signature by representatives of seventeen nations of the Metre Convention on 20 May 1875. The Convention set the framework for global collaboration...

Download KeepIn Calendar

Enjoy the interesting stories even on your phone or tablet