Kevin explores the next frontier of human space travel. Live from the Station, Tim answers questions directly from the children in the lecture theatre audience. With Tim's help out in Earth's orbit, Kevin investigates how the next generation of astronauts will be propelled across the vast chasm of space to Mars and beyond. So, how will life be artificially sustained as we travel the millions of kilometres to the red planet and on into the cosmos? How will our food last for three years or more? And what is waiting what for us when we finally land? With earth-shattering experiments, top space scientists and our astronaut live from space, Dr Fong reveals how we'll survive that voyage to space's next frontier and beyond.
In summer 2013, the black hole at the centre of the Milky Way was getting ready to feast. A gas cloud three times the size of our planet strayed within the gravitational reach of our nearest supermassive black hole. Across the globe, telescopes were being trained on the heart of our galaxy, some 27,000 light years from Earth, in the expectation of observing this unique cosmic spectacle. For cosmic detectives across the Earth, it was a unique opportunity. For the first time in the history of science, they hoped to observe in action the awesome spectacle of a feeding supermassive black hole.
Thanks to the wonders of physics, astronomers can map a timeline of the universe’s history. Today, Phil’s going to give you an overview of those first few minutes (yes, MINUTES) of the universe’s life. It started with a Big Bang, when the Universe was incredibly dense and hot. It expanded and cooled, going through multiple stages where different kinds of matter could form. It underwent a phenomenally rapid expansion called inflation, which smoothed out much of the lumpiness in the matter. Normal matter formed atoms between 3 and 20 minutes after the bang, and the lumps left over from inflation formed the galaxies and larger structures we see today.
Where are all the aliens? The universe is too big and too old, why have we not met aliens yet? Do they live in computers? Were they wiped out by an ancient super intelligence? Or are we just to primitive to understand their motives? Whatever the answer is, it is incredibly important for our own future.