Explosive Queries with Terry Crews
StarTalk Radio
Deep Dive
Why is a magnetic field important for life on Earth?
A magnetic field protects Earth from harmful solar radiation, directing charged particles away and preventing them from reaching the surface.
What role do muscles play in human survival?
Muscles are crucial for various physical tasks and were historically linked to hunting and providing for the tribe, which influenced mating preferences and social status.
How do photons interact with gravity?
Photons, despite having no mass, are affected by gravity due to their energy. They respond to gravitational fields similarly, regardless of their energy level.
What happens to humans in low gravity environments?
In low gravity, humans can grow taller as their vertebrae expand, and muscles may atrophy if not used. Astronauts experience these effects and must exercise to maintain muscle mass.
What is the edge of the observable universe like?
The observable universe has a horizon beyond which light has not yet reached us. It shows the universe in its younger stages, but the actual size of the universe is unknown.
- Earth's magnetic field protects us from harmful solar radiation.
- Mars lacks a magnetic field, making it vulnerable to radiation.
- Underground colonies could provide protection, but the purpose of living on Mars would be questioned.
- NASA studies space weather to predict solar wind activity.
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