Cosmic Microwave Background: The detection of a mysterious anomaly sixty years ago was able to take us right back to the beginning of the universe … Did the universe have a beginning. Universe Unravelled with the Stephen Hawking Centre s1e10: Black Holes and the Big Bang (short)
One of the darkest mysteries of the universe … we’ve only just begun to explore. Universe Unravelled with the Stephen Hawking Centre s1e11: Shining Light on Dark Matter (short)
What exactly is dark matter? We don’t really know yet. ibid.
What is the universe expanding into? ibid.
How we discovered our universe is expanding ... ‘The space between the galaxies is expanding.’ Universe Unravelled with the Stephen Hawking Centre s1e12: Expanding Universe, Big Bang (short)
It started with two scientists, a telescope and some pigeon droppings. Universe Unravelled with the Stephen Hawking Centre s1e13: A Baby Picture of the Universe (short)
The glow: This was the Cosmic Background Radiation or CBR. ibid.
Not only is it expanding, this expansion at present is accelerating. And that acceleration cosmologists believe also happened in the early universe. Universe Unravelled with the Stephen Hawking Centre s1e14: What is Inflation? (short)
CMB provides compelling evidence for the Big Bang … It offers insight into how the large structures we see today came into being. Universe Unravelled with the Stephen Hawking Centre s1e15: Where Did We Come From? (short)
There was a slightly higher density of matter in some places than there was in others … Tiny fluctuations would evolve under the influence of gravity. ibid.
This extra gravitational effect comes from dark matter. Universe Unravelled with the Stephen Hawking Centre s1e16: Can We See Dark Matter? (short)
Cosmic pie: 69% dark energy, 26% dark matter, 5% ordinary matter. Universe Unravelled with the Stephen Hawking Centre s1e17: Cosmic Pies (short)
Physicists worldwide have tried to establish for over a hundred years a theory of quantum gravity. Universe Unravelled with the Stephen Hawking Centre s1e18: Do We Need Quantum Gravity? (short)
Gravitons: haven’t yet been observed. ibid.
We can make precise prediction about what happened in that first second. Universe Unravelled with the Stephen Hawking Centre s1e19: The First Second (short)
Einstein realised that space/time is not a fixed background on which physics plays out, but it interacts with the very matter in our universe. Universe Unravelled with the Stephen Hawking Centre s1e20: Spacetime Matters (short)
This new idea of General Relativity correctly described how gravity works. Universe Unravelled with the Stephen Hawking Centre s1e21: Space, Time & Gravity (short)
The next piece of the puzzle … Dark Energy and Dark Matter. Universe Unravelled with the Stephen Hawking Centre s1e22: Modified Theories of Gravity (short)
Scalar Tension theories that are very similar to General Relativity … They allow the gravitational constant to be not constant. ibid.
We uncover some black hole secrets … Black holes emit heat … After trillions of years they evaporate completely … The discovery of Hawking radiation. Universe Unravelled with the Stephen Hawking Centre s1e23: Radiation & Quantum Gravity (short)
The key to unlocking the early mysteries of the universe lies with gravitational waves. Universe Unravelled with the Stephen Hawking Centre s1e24: New Windows on the Universe (short)
There’s still so much to discover, understand and explore. Universe Unravelled with the Stephen Hawking Centre s1e25: Into the Future (short)
Futuristic plans to create an ecosystem on Mars. A source of light found on the edge of our solar system. And galactic probes that hunt for humanity’s next home. The UnXplained: Mysteries of the Universe, History 2024