- March 13 -

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

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 Uranus accidentally with his telescope while surveying all stars down to those about 10 times dimmer than can be seen by the naked eye. One "star" seemed different, and within a year Uranus was shown to follow a planetary orbit. The object was soon universally accepted as a new planet.

Uranus is the seventh planet from the Sun and was the first planet to be discovered with the use of a telescope. Uranus’ most unique feature is that its axis sideways in comparison to other planets i.e. its north and south poles are in line with where other planets have their equators. Uranus is named after the Greek sky deity Ouranos, the earliest of the lords of the heavens.

The only spacecraft to visit Uranus is Voyager 2 which passed in 1986 passing at a distance of 81,500 km.
Uranus has two sets of rings, nine inner rings and two outer rings.
The first set of rings was discovered in 1977 and the second set was discovered in 2003 by the Hubble Space Telescope.

Although Uranus is visible to the naked eye, just like the classical planets — Mercury, Venus, Mars, Jupiter, and Saturn — it was long mistaken as a star because of the planet’s dimness and slow orbit.



More holidays on this day:

Ear Muff Day
World Rotaract Day

You may also like...

Interesting events from Science category.

Earth's Rotation Day

On January 8, 1851, French Physicist Leon Foucault invented a pendulum device to prove the Earth’s rotation. It had long been believed that the Earth rotated, but Focault discovered that he could demonstrate this with a simple experiment using a tall pendulum with a heavy weight. He...

Amerigo Vespucci Birth Anniversary

Many people have had a great influence upon our world. Some have changed it in a generally good way, such as Abraham Lincoln. Others have affected the world negatively, such as Adolph Hitler. Still others have changed the world thoroughly, their changes resounding through time, such as Christopher...

Pi Day

Pi Day is an unofficial holiday commemorating the mathematical constant ? (pi). Pi Day is observed on March 14 (or 3/14 in month/day date format), since 3, 1 and 4 are the three most significant digits of ? in the decimal form. In 2009, the United States House of Representatives supported the...

NASA Announced the First Astronauts

On April 9, 1959, the National Aeronautics and Space Administration (NASA) introduces America's first astronauts to the press: Scott Carpenter, L. Gordon Cooper Jr., John H. Glenn Jr., Virgil "Gus" Grissom, Walter Schirra Jr., Alan Shepard Jr., and Donald Slayton. The seven men, all military test...

First dog in space

Laika Laika (Russian: ?????, literally meaning 'Barker'; c. 1954 – November 3, 1957) was a Soviet space dog that became the first animal to orbit the Earth – as well as the first animal to die in orbit. As little was known about the impact of spaceflight on living creatures at the...

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...

Download KeepIn Calendar

Enjoy the interesting stories even on your phone or tablet