1. The True Nature of Matter and Mass

We know that mass is energy… but what is energy? And where did matter and time even come from? Matt begins to dive into these intricate topics by first examining what inertial mass is, how it relates to gravitational mass, and what it all means for mass as a fundamental property.

2. When Time Breaks Down

3. The Photon Clock Challenge

4. The Origin of Matter and Time

5. Will Mars or Venus Kill You First?

6. LIGO's First Detection of Gravitational Waves!

7. Planet X Discovered?? + Challenge Winners!

8. Why the Big Bang Definitely Happened

9. What's Wrong With the Big Bang Theory?

10. Cosmic Microwave Background Challenge

11. Why is the Earth Round and the Milky Way Flat?

12. How Cosmic Inflation Flattened the Universe

13. Pulsar Starquakes Make Fast Radio Bursts? + Challenge Winners!

14. We Are Star Stuff

15. Will the Universe Expand Forever?

16. Why the Universe Needs Dark Energy

17. What Does Dark Energy Really Do?

18. Will Starshot's Insterstellar Journey Succeed?

19. The Cosmic Conspiracy of Dark Energy Challenge Question

20. Anti-gravity and the True Nature of Dark Energy

21. Is an Ice Age Coming?

22. Is Quantum Tunneling Faster than Light?

23. New Fundamental Particle Discovered?? + Challenge Winners!

24. The Strange Universe of Gravitational Lensing

25. Planck's Constant and The Origin of Quantum Mechanics

26. Nuclear Physics Challenge

27. Juno to Reveal Jupiter's Violent Past

28. The Future of Gravitational Waves

29. The Quantum Experiment that Broke Reality

30. Can We Survive the Destruction of the Earth? ft. Neal Stephenson

31. How the Quantum Eraser Rewrites the Past

32. Quantum Eraser Lottery Challenge

33. Should We Build a Dyson Sphere?

The Kepler telescope recently noticed a strange partial eclipse that some have speculated could be a Dyson Sphere. Are Dyson Sphere's possible? Are they practical? What other alternatives to futuristic energy capture do we have to choose from? Why not a kugelblitz - a swarm of black hole powered engines?

34. Is There a Fifth Fundamental Force? + Quantum Eraser Answer

35. Self-Replicating Robots and Galactic Domination

We’ll soon be capable of building self-replicating robots. This will not only change humanity’s future but reshape the galaxy as we know it.

36. Quantum Entanglement and the Great Bohr-Einstein Debate

Albert Einstein strongly disagreed with Niels Bohr when it came to Bohr’s interpretation of quantum mechanics. Quantum entanglement settled the argument once and for all.

37. Life on Europa?

The Hubble Telescope found more evidence of vast plumes of water bursting through the icy surface of Jupiter’s moon Europa. What does this tell us about the potential for life on Europa?

38. Are We Alone? Galactic Civilization Challenge

The Drake Equation tells us the likelihood that there are other advanced technological civilizations waiting for us among the stars. In this episode of Space Time we challenge you to use the Drake Equation to help us determine how near or far these alien races may be. Links to reference material below.

39. Black Holes from the Dawn of Time

Primordial black holes may be lurking throughout our universe. How large are they, how many are out there and what would happen if they moved through our solar system?

40. The First Humans on Mars

Elon Musk’s SpaceX program proposes that 100 people could be sent to colonize Mars within 10 years. What might that colony look like?

41. The Many Worlds of the Quantum Multiverse

Is our universe a definitive single reality or is it merely one within an infinitely branching multiverse?

42. Quantum Vortices and Superconductivity + Challenge Answers

43. Did Dark Energy Just Disappear?

44. Strange Stars

45. Pilot Wave Theory and Quantum Realism

46. What Happens at the Event Horizon?

47. Escape The Kugelblitz Challenge

48. Have They Seen Us?

Are aliens watching Earth TV? We'd like to credit the SKA Organization for the image used in the thumbnail.