In May of 2016, Elon Musk announced that SpaceX would be sending a Dragon capsule on its way to Mars by the end of 2018. That’s pretty ambitious. After all, 2018 is soon. But is it too soon? I wrote an article about Musk’s plan to go to Mars, and I still think SpaceX can do it. Show More Summary
Remember when we told you that the Universe is a big place, and anything that can go wrong, inevitably does? Today we talk about what happens when galaxies come together. This is particularly pertinent because our Milky Way will collide with Andromeda in the future!
Most of the time stars hang around for billions of years. But the Universe is a big place, and anything that can go wrong, inevitably does. Today we talk about what happens when these stars come together. The outcome is violent, and fortunately for you, also interesting.
Last week we talked about knowledge, what we do and don’t know. This week we talk about questions which are impossible to ask, where the answers don’t actually exist.
There the things we know, the things we don’t know, and the things we can’t know. How do we know which one is when when we’re deciding to fund research and direct our scientific inquiry.
How much of a challenge is it to get funding for large projects like LIGO? Fraser and Pamela discuss the difficult issues finding “Big Money.”
What kinds of things can we see using gravity, that we may not otherwise be able to see? Pamela will fill us in on the Great Attractor, etc!
What do Pamela and Fraser think will happen or be discovered in 2016? What would they like to see in the near future?
It’s time for us to go back and catch up with all of the projects, news stories, weird star systems, and other topics that need updating!
Last night (Wednesday 27 January), I was on ABC Nightlife talking with Rod Quinn about the safety of plastics and bisphenol A in the light of the latest Australian Total Diet Study.For those of you who missed my radio performance last...Show More Summary
Science is typically a male dominated profession, mostly dudes, not a lot of ladies. From researchers to professors, to law makers, woman have a tough time gaining traction in such a heavily gendered field. Today we’re going to talkShow More Summary
Astronomers gather electromagnetic radiation with the telescopes: mostly visible light. But sometimes they've got to be clever about where they look for these elusive photons. Light can get emitted, absorbed, reflected, and each method tells astronomers a little more about what they're looking at.
One of the biggest, most basic questions you can ask is: “why is there something and not nothing?” The reality is that we don’t know the answer, we might never know the answer. Today we’ll investigate this mystery, recently covered by the physicist Lawrence Krauss in his book of the same name.
Every year, it’s the same dilemma: what gift should you get for the super space nerd in the family? And if someone has a budding interest in space and astronomy, what can you do to feed their hunger for knowledge? Today we’ll talk telescopes, books and planispheres. Everything you need to avoid a holiday gift disaster.
In the last few episodes, we’ve been talking about the standard model of physics, explaining what everything is made up of. But the reality is that we probably don’t know a fraction of how everything is put together. This week we’re going to talk about baryons, the particles made up of quarks. Show More Summary
All fundamental particles are either fermions or bosons. Last week we talked about quarks, which are fermions. This week we’ll talk about bosons, including the famous Higgs boson, recently confirmed by the Large Hadron Collider.
Physicists are getting a handle on the structure of the Universe, how everything is made of something else. Molecules are made of atoms, atoms are made of protons, neutrons and electrons, etc. Even smaller than that are the quarks and the leptons, which seem to be the basic building blocks of all matter.
Humans, cars and planets are made of molecules. And molecules are made of atoms. Atoms are made of protons, neutrons and electrons. What are they made of? This is the standard model of particle physics, which explains how everything is put together and the forces that mediate all those particles.
Have you ever been doing thermodynamics in a closed system and noticed that there’s a finite number of ways that things can be arranged, and they tend towards disorder? Of course you have, we all have. That’s entropy. And here in our Universe, entropy is on the rise. Show More Summary
I’m not saying it’s aliens, but it’s aliens. Actually, it’s almost certainly not aliens, or a wormhole, or a multiverse. When scientists discover something unusual, they make guesses about what’s happening. But Occam’s Razor encourages us to consider the probabilities of different events before making any concrete predictions.