Australasian Science: Australia's authority on science since 1938

Feature

Feature article

Crowded Space: The Problem of Orbital Debris

In 2001, the third stage of a Delta 2 rocket re-entered the atmosphere over the Middle East. The titanium motor casing, weighing about 70 kg, landed in Saudi Arabia about 240 km from the capital of Riyadh.

In 2001, the third stage of a Delta 2 rocket re-entered the atmosphere over the Middle East. The titanium motor casing, weighing about 70 kg, landed in Saudi Arabia about 240 km from the capital of Riyadh.

By Kerrie Dougherty

The orbiting detritus of humanity’s exploration and exploitation of space poses a growing threat to operational space systems and crewed spaceflight activities.

To view this article subscribe or purchase a yearly pass here.

Mother Knows Best

An adult female green turtle returning to the sea after nesting.

An adult female green turtle returning to the sea after nesting. Photo: T. Franciscus Scheelings

By Anthony Rafferty

Why do turtles lay eggs when their close relatives evolved live birth? A study of their reproductive physiology reveals how egg-laying improves the survival prospects of hatchlings.

To view this article subscribe or purchase a yearly pass here.

The World’s Oldest and Most Accurate Trigonometry Table

Daniel Mansfield holds the Plimpton 322 tablet at the Rare Book and Manuscript Library at Columbia University in New York. Credit: Andrew Kelly/UNSW

Daniel Mansfield holds the Plimpton 322 tablet at the Rare Book and Manuscript Library at Columbia University in New York. Credit: Andrew Kelly/UNSW

By Daniel Mansfield

By decoding an ancient stone tablet, researchers have realised that the Babylonians employed a form of trigonometry that is very different to our own.

To view this article subscribe or purchase a yearly pass here.

In Living Colour

Credit: Roy Caldwell

Two mantis shrimp wrestling. These animals have the most comprehensive set of colour receptors known to humans. Credit: Roy Caldwell

By Noor Gillani

Colour perception is more advanced in goldfish than humans, yet researchers have tended to focus on vision in animals similar to us. Justin Marshall says this is “fundamentally stupid” and is setting his sights on a marine creature with 12 different colour receptors.

To view this article subscribe or purchase a yearly pass here.

Tasty Treats Diminish Our Capacity for Patience

Credit: tawanlubfah/Adobe

Credit: tawanlubfah/Adobe

By Bowen Fung

A new study finds that our recent experience with rewards such as food can change our capacity for patience.

To view this article subscribe or purchase a yearly pass here.

Like, Comment, Share: Should You Share Your Genetic Data Online?

Credit: kentoh/adobe

Credit: kentoh/adobe

By Kathleen Gray

The culture of sharing our private details online is extending to health and ancestry data generated by genome testing. What are the benefits and what are the risks?

To view this article subscribe or purchase a yearly pass here.

Egg Supply and Demand

Credit: Maridav/Adobe

Credit: Maridav/Adobe

By Karla Hutt & Jock Findlay

Understanding the relationship between the number of healthy eggs stored in the ovaries and the length of the fertile lifespan will lead to more accurate predictions about how long each woman will remain fertile.

To view this article subscribe or purchase a yearly pass here.

How Zombies Can Save Us from a Real Apocalypse

How Zombies Can Save Us from a Real Apocalypse

By Nick Beeton, Alexander Hoare & Brody Walker

Mathematical modelling of a zombie apocalypse has real-world applications in our responses to infectious diseases such as Ebola and HIV, wildlife conservation and even the teaching of statistics.

To view this article subscribe or purchase a yearly pass here.

James Randi: An Honest Liar

James Randi

James Randi has used his remarkable conjuring skills and the power of his personality and intellect to show us how easily we can be deceived.

By Peter Bowditch

James Randi discusses his greatest achievements, disappointments, what woo annoys him the most, and the challenges fracturing the skeptical movement.

To view this article subscribe or purchase a yearly pass here.

Big Bang Theory

Michio Kaku

This month Kaku is bringing his stage talks to Australia in a series of “fireside chats” followed by questions and answers in Sydney, Melbourne and Brisbane.

By Stephen Luntz

String theory inventor Michio Kaku talks to Australasian Science about the recent discovery of gravitational waves, the search for parallel universes and a unified theory of everything.

To view this article subscribe or purchase a yearly pass here.