Space

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Across
  1. 1. all of space and time and their contents. It comprises all of existence, any fundamental interaction, physical process and physical constant, and therefore all forms of energy and matter, and the structures they form,
  2. 6. minor planet—an object that is neither a true planet nor a comet—that orbits within the inner Solar System. They are rocky, metallic or icy bodies with no atmosphere.
  3. 7. icy, small Solar System body that warms and begins to release gases when passing close to the Sun, a process called outgassing
  4. 8. distinct luminescent part of interstellar medium, which can consist of ionized, neutral, or molecular hydrogen and also cosmic dust.
  5. 9. hypothetical structure connecting disparate points in spacetime, and is based on a special solution of the Einstein field equations.
  6. 12. In Astronomy, hypothetical form of matter that appears not to interact with light or the electromagnetic field.
  7. 13. the collapsed core of a massive supergiant star, which had a total mass of between 10 and 25 solar masses , possibly more if the star was especially metal-rich.
  8. 14. theoretical stellar remnant that has cooled sufficiently to no longer emit significant heat or light
Down
  1. 2. powerful and luminous explosion of a star .It occurs during the last evolutionary stages of a massive star or when a white dwarf is triggered into runaway nuclear fusion.
  2. 3. hypothetical region of spacetime and singularity that cannot be entered from the outside, although energy-matter, light and information can escape from it
  3. 4. stellar core remnant composed mostly of electron-degenerate matter. A white dwarf is very denseIts mass is comparable to the Sun's, while its volume is comparable to the Earth's.
  4. 5. region of spacetime where gravity is so strong that nothing, including light and other electromagnetic waves, has enough energy to escape it.
  5. 10. system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity.
  6. 11. giant planet composed mainly of hydrogen and helium.also called failed stars because they contain the same basic elements as a star