The StarTalk Podcast episode titled Cosmic Queries – Cosmic Grab Bag covers a range of topics related to space and astronomy. The hosts and guests answer questions from their Patreon members, including whether dark gravity could be the residual energy from a dead black hole and how we can tell if an area is obscured by a black hole or just an empty area of space. They also discuss the concept of dark matter and its role in shaping the universe.
The episode also covers other interesting topics such as the best places for astronomical observations, the limitations of space, and the unpredictability of the formation of solar systems. The speaker explains that if someone were on an alien planet and had a powerful telescope, they could potentially see events on Earth from the past. The concept of time as a coordinate is explored, and the speaker questions why humans cannot move back and forth in time like they can in other coordinates.
The podcast includes humorous moments and pop culture references. The hosts discuss how radio waves are the band of choice for aliens and how SpaceX is not a front for a larger Armageddon conspiracy. They also talk about Superman's age and what would happen if the Earth were to rotate in the opposite direction.
Overall, the episode is a fun mix of science and pop culture, covering a range of interesting topics related to space and astronomy. The hosts and guests provide detailed and informative answers to their listeners' questions, while also keeping the conversation light and entertaining.