Curious Kids: is time travel possible for humans?

Author: Lucy Strang, Jacqueline Bondell
Date: June 15, 2020
Lucy Strang, University of Melbourne and Jacqueline Bondell, Swinburne University of Technology Hi Jasmine. I wish! In books and movies, our favourite characters can use “time-turners” and treehouses to travel through time. Unfortunately, it isn’t that easy for people in real life. Let’s l...

Curious Kids: what does the Sun’s core look like?

Author: Sara Webb
Date: July 3, 2020
Sara Webb, Swinburne University of Technology We are about to take a journey to the centre of the Sun. The action begins about 148 million kilometres from our planet when we arrive at the Sun’s surface in our space ship. It’s hot here at the surface, about 5,700 degrees Celsius, and the light ...

The burn legacy: why the science on hazard reduction is contested

Author: Kevin Tolhurst
Date: February 20, 2020
When it comes to reducing the extent of bushfires, scientists disagree on the best way to do it. Hazard-reduction burning (also known as “prescribed burning” or “controlled burning”) is controversial and, depending on the scientific paper, it’s shown to either be effective or not work a...

Curious Kids: how do bushfires start?

Author: David Bowman
Date: May 14, 2019
You probably know that bushfires are most likely to start when the weather is hot and dry. Bushfires, like all fires, require three ingredients: oxygen, heat, and fuel. These are the elements that make up the “fire triangle”. Oxygen Oxygen is a gas. It is in the air we breathe. About one-fif...

Curious Kids: how do solar panels work?

Author: Andrew Blakers
Date: 6/11/19
The Sun produces a lot of energy called solar energy. Australia gets 20,000 times more energy from the Sun each day than we do from oil, gas and coal. This solar energy will continue for as long as the Sun lives, which is another 5 billion years. Solar panels are made of solar cells, which is the p...

Curious Kids: can Earth be affected by a black hole in the future?

Author: Janie Hoormann
Date: 31/7/19
That is a great question. As you know, black holes are called that because the gravity in their centre is so strong, it sucks all nearby light in. None can escape. That’s how strong a black’s hole’s gravitational pull is. Black holes create the strongest gravitational pull in the universe (t...

Curious Kids: how are stars made?

Author: Orsola De Marco
Date: 18/10/19
How are stars made? Well, stars are not made, they make themselves! Or maybe I should say: they come into existence because of a powerful force of nature called gravity. Galaxies are where new stars are born. In galaxies, there are very large and fluffy clouds of gas and dust called nebulae. Gravi...

Curious Kids: can Earth be affected by a black hole in the future?

Author: Janie Hoormann
Date: July 31, 2019
That is a great question. As you know, black holes are called that because the gravity in their centre is so strong, it sucks all nearby light in. None can escape. That’s how strong a black’s hole’s gravitational pull is. Black holes create the strongest gravitational pull in the universe (t...

What makes an echo?

Author: Noel Hanna
Date: 20/3/19
What is a sound? What we call “sound” is really just the air in our ears moving back and forth. The air can move fast or slow. We can hear air moving back and forth between 20 and 20,000 times per second. That’s really, really fast! (For the grownups reading right now, human hearing is from ...