Across
- 5. - The scientific study of planets that orbit stars outside of our solar system.
- 8. - The boundary surrounding a black hole beyond which no information or matter can escape.
- 9. - The collapsed core of a massive star that has undergone a supernova explosion, composed almost entirely of densely packed neutrons.
- 11. - A point in space-time where the laws of physics break down, often associated with the center of a black hole.
- 12. - The process by which stars produce elements through nuclear reactions in their cores.
- 13. - The theory proposed by Albert Einstein that describes the relationship between space and time, including special relativity and general relativity.
- 15. - The material, such as gas, dust, and cosmic rays, that fills the space between stars in a galaxy.
Down
- 1. - A hypothetical concept that suggests the existence of multiple universes beyond our own, each with its own set of physical laws, properties, and conditions, potentially explaining certain cosmological mysteries
- 2. - A hypothetical form of matter that is thought to make up a significant portion of the total mass in the universe but does not emit, absorb, or reflect any electromagnetic radiation, making it invisible and difficult to detect.
- 3. - The branch of astronomy that studies the physics of celestial objects and their interactions.
- 4. - The force of attraction between objects with mass, such as planets, stars, and galaxies.
- 6. - The branch of physics that deals with the behavior of particles on a very small scale, such as atoms and subatomic particles.
- 7. - A hypothetical tunnel-like structure that could connect two distant points in space-time, potentially allowing for faster-than-light travel.
- 10. - The study of the origin, evolution, structure, and ultimate fate of the universe.
- 14. - The smallest possible scale in the universe, named after Max Planck, which is believed to be the limit at which our current understanding of physics breaks down.