In this episode we dive deeper into the relationship between space and time and explore how we can geometrically map the causality of the universe and increase our understanding of how time and distance relate to one another.
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.
Astronomy Cast takes a fact-based journey through the cosmos as it offers listeners weekly discussions on astronomical topics ranging from planets to cosmology. Hosted by Fraser Cain (Universe Today) and Dr. Pamela L. Gay (CosmoQuest), this show brings the questions of an avid astronomy lover direct to an astronomer. Together Fraser and Pamela explore what is known and being discovered about the universe around us.
- Ep. 531: Australian Indigenous Astronomy
- Ep. 530: Astronomy of the Andes – Then and Now Pt. 2
- Ep. 529: Astronomy of the Andes – Then and Now Pt. 1
- Ep. 528: Modern Astronomy of the American Southwest
- Ep. 527: Astronomy of the American Southwest
- Ep. 526: Event Horizon Telescope and the Black Hole at M87
- Ep. 525: 100 Years of the International Astronomical Union
- Ep. 524: Judging Age & Origins, part 3 – Beyond Our System
- Ep. 523: Judging Age & Origins, Pt. 2 Across the Solar System
- Bonus Episode: Dust with Dr. Paul Sutter
- Ep. 521: The Deep Space Network
- Ep. 521: Judging Age & Origins, part 1 – Earth Rocks
- Ep. 520: Transients: What They Are and Why They Matter, Part 2
- Ep. 519: Transients: What They Are and Why They Matter
- Ep. 518: When the Universe tried to Declare War
We’ve established by now that black holes are weird. The result of absolute gravitational collapse of a massive body: a point of hypothetical infinite density surrounded by an event horizon. At that horizon time is frozen and the fabric of space itself cascades inwards at the speed of light. Nothing can travel faster than light, and so nothing can escape from below the event horizon- not matter, not light, not even information.