Category: Astronomy blog

Daily Cosmobite: I see a supermoon setting and rising

September 8, 2014

The third so-called supermoon for 2014 is about to happen.  Supermoon is when Moon is at perigee to Earth. An eight year old explained perigee to me the other day. He said this is when the Moon is close to the Earth because of the slight oval path it takes around our planet.

Edinburgh Timeball – still operating since 1853

June 8, 2014

Edinburgh is a fabulous city and on 24 May I managed to visit the time ball, located on Calton Hill, on top of a monument dedicated to naval hero Horatio Nelson. The monument is in the shape of an upturned telescope and was completed in 1816.

In The Centre Of The ‘Ring Of Fire’

July 19, 2013

It hardly seems like two months since I flew into Alice Springs for a look around before the annular eclipse on Friday 10th May. My travelling companions included Prof Jay Pasachoff and his wife Naomi, Rob Lucas, Helen Robinson, Cathi Humphrey-Hood, her two children Elswyth and Aengus, Chris Douglass; and on the flight to Alice Springs we met Richard and Margaret Jaworski who joined us in Tennant Creek for the eclipse.During our week based in Alice Springs we took a trip down to Henbury Meteorite Craters (about 145km south-west of Alice Springs) and walked around the craters.

Winter Solstice Sunrise at Elizabeth Bay House

June 21, 2013

    This morning, June 21 2013, I was at Elizabeth Bay House overlooking Sydney harbour to see the sun rise. The house is closely aligned to the direction of winter solstice sunrise, but unfortunately today cloud delayed the sun's appearance for half an hour.

Astronomical gathering in Beijing, the IAUXXVII General Assembly

August 29, 2012

Let the astronomy begin! Considered the  'Astronomical Olympics' over 2,000 astronomers from around the globe gathered in Beijing last week for a fortnight exchanging ideas from research results and focussing on new scientific and heritage projects.

February 29th and the long journey to become the leap day

February 28, 2012

Post by Geoffrey Wyatt Calendars are attempts to try to keep track of time by using the cycles of the Sun ad the Moon. The Sun is used via the seasons and its changing position in the sky, for example the equinoxes and solstices.

Transit of Venus preparation, part 1

July 29, 2011

by Stefan Tibar and Herve Meteyer On Sunday, 18th of July 2011, two young fellows from France have come to Sydney to renew the long French-English rivalry about the transit of Venus… Who, between French and British scientists could determine more accurately the distance between the earth and the sun using the observations made during the transit of Venus?

Astro Imagers Gather for Inaugural Conference

July 19, 2011

July 2011 marks a first in this country with the Australian Astro Imaging Conference held this month on the Gold Coast, Queensland. This is the first time a large scale conference on imaging has been held in this country, and with a full house, indicates the interest and need for a conference of this scale to be held on a regular basis.

Planetary alignment on 28 May 2011

June 2, 2011

Daphne Gonzalvez sent us this photograph she took from Bondi early on the morning of 28 May. Unfortunately, the parade of the planets was not visible over the next several mornings due to a cloudy sky.

Work experience students and M42

March 18, 2011

Our two work experience students, Harry and Peter from Sydney Technical High School at Bexley used an avi file captured from a low cost security camera attached to a telescope to make this image of the beautiful nebula M42.

Andrew writes “Sydney Observatory’s Greatest Mistake?”

March 15, 2011

The first electric light in Sydney On the evening of January 23, 1868 Sydney was in the grip of Royal-tour fever and a spectacular, but gas powered, light show was underway. Up on the hill at Sydney Observatory an electric arc lamp switched on and it stole the show.