Latest Posts

Close pass by space rock

June 28, 2006

On Monday 3 July a space rock with the designation 2004 XP14 will pass relatively close to the Earth. The rock is between half and one kilometres in width, but there is no need to worry as at its closest it will still be 430,000 km away or just over the distance of the Moon from the Earth.

Backyard Stonehenge

June 26, 2006

Q. Do you know of anywhere i can get details of the Solar and Lunar azimuth angles from Sydney? As i would like to make a model Stonehenge for the backyard. But of cause I can't use the original layout, being in a different lat.

New names to remember

June 26, 2006

Two new moons of Pluto were discovered in 2005 and confirmed by the Hubble Space Telescope earlier this year. Until now they were referred to as S/2005 P1 and S/2005 P2, names that do not roll smoothly off the tongue.

The shortest day

June 21, 2006

Today 21 June is the shortest day of the year and from now on days will become longer. However, that does not mean that the Sun rises earlier from now on. In fact, over the next week it will rise up to a minute later.

Light pollution

June 21, 2006

Too many badly directed lights are a concern to anyone involved in astronomy. Noone wants a dark city, but lights can be directed downwards and many lights are just badly directed decorative lights which do not add to anyone's feeling of security.