Contact Us

Sydney, NSW, Australia

You are the visitor number:

Recent Posts

Articles by Members

March 31, 2020

12 April 1633

The inquisition of Galileo by the Roman Catholic church begins. He was ordered to turn himself in to the Holy Office to begin trial for holding the belief that the Earth revolves around the Sun, which was deemed heretical by the Catholic Church. He was found guilty and agreed to stop teaching and spent the...

March 1, 2020

7 March 1831

The Royal Astronomical Society receives its Royal charter from King William IV. The society was founded in 1820 as the Astronomical Society of London to promote astronomical research. At that time, most members were 'gentleman astronomers' rather than professionals. In 1915 A Supplemental Charter granted by...

December 31, 2019

7 January 1610

Galileo discovers four moons orbiting the planet Jupiter. Looking at what he thought were a group of stars, he noted the objects appeared to move in a regular pattern and realised they were in orbit around Jupiter. Today, Jupiter’s four largest satellites—Io, Europa, Ganymede, and Callisto—are named the G...

November 30, 2019

11th December 1972

Apollo 17, the last of the Apollo missions, lands on the Moon. Eugene Cernan, commander of Apollo 17, still holds the distinction of being the last man to walk on the Moon as no humans have been back since. The mission carried the only trained geologist to walk on the lunar surface, Lunar Module Pilot...

November 1, 2019

27th November 1783

The first reference to black holes is mentioned by John Michell, an English natural philosopher, in a paper for the Philosophical Transactions of the Royal Society of London. He called them "dark stars". Michell suggested that there might be many "dark stars" in the universe, and today astronomers bel...

September 30, 2019

EVENTS

31st October 1992

Pope John Paul II pardons Galileo for his views. The Catholic church condemned Galileo in 1633 for his subversive views, namely that the Earth revolved around the Sun. He lived under house arrest for the rest of his life. Pope John Paul II formally apologized for the "Galileo Case" in the first o...

August 31, 2019

26th September 1905

Einstein’s Theory of Special Relativity is published. It is the generally accepted and experimentally confirmed physical theory regarding the relationship between space and time and contains one of the most famous equations, e=mc2, which in simple terms means if you multiply a specific amount of mass...

June 30, 2019

5th July 1687

The book Principia is published by Sir Isaac Newton. Written in Latin with the title Philosophiæ Naturalis Principia Mathematica (Mathematical Principles of Natural Philosophy) it is often referred to simply as the Principia. The book contains Newton's laws of motion, Newton's law of universal gravitation...

May 31, 2019

13th June 1983   

Pioneer 10 becomes the first human-made object to pass outside Pluto's orbit and leave the solar system. It was the farthest human-made object in existence until Voyager 1 exceeded its range in February 1998. It continues its journey through interstellar space heading in the general direction of A...

April 30, 2019

2nd May 1780

Sir William Herschel discovers the first binary star, Xi Ursae Majoris, also named Alula Australis, in the constellation of Ursa Major. It was the first visual double star for which an orbit was calculated. Xi Ursae Majoris is found in the left hind paw of the Great Bear

1st May 1930

Pluto (picture above) is...

Please reload

March 31, 2020

February 3, 2020

Please reload