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January 12, 2020

This month . . . Dwarfs. No, not Snow White and her seven companions. Dwarf stars. They come in a variety of colours and are the last stage in a star’s life. It is believed our own Sun will become a white dwarf at the end of its life.

White dwarf stars are relatively rare. There are only eight known white dwarf stars in...

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...

December 23, 2019

DID YOU KNOW

This month . . . The North Star

The North Star or Pole Star is located close to the north celestial pole, the point around which the entire northern sky revolves. It is almost straight above Earth's north pole and when seen from Earth it appears to always stay in the same place in the sky. The image below wa...

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 7, 2019

This month ……. The Andromeda Galaxy (M31). On a collision course with the Milky Way it will be visiting us “shortly”

The Andromeda Galaxy is one of the closest galaxies to our own Milky Way and is travelling in our direction at approximately 100 to 140 kilometres per second. In about 4.5 billion years the Andromeda Gala...

October 16, 2019

The Southern Cross is an iconic constellation steeped in our nation’s history and culture. The photograph in this post was taken by Geoffrey Wyatt, Senior Education Producer Museum of Applied Arts and Sciences.

The Southern Cross is the smallest of the 88 constellations spanning only six degrees from north to...

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...

September 7, 2019

This month Pluto…. Once our ninth planet Pluto was demoted to “dwarf planet’ in 2006. However, with the New Horizons mission enigmatic Pluto, once shrouded in mystery, is giving up its secrets. The image below is Pluto photographed by the LORRI and Ralph instruments aboard the New Horizons spacecraft in 2015.

After...

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...

August 11, 2019

This month ….. the incredibly quick to the incredibly long and everything in between

It takes the Sun 225 million years to travel once around the centre of the Milky Way Galaxy. This is known as a galactic year or a cosmic year.

A Pulsar is a neutron star that spins incredibly fast. The fastest known spinning pulsar, PSR...

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December 31, 2019

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November 28, 2019

November 1, 2019

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