Final answer:
The correct chronological order of these events in the history of space exploration is first the observational confirmation of the Big Bang theory, followed by the discovery of quasars, then Voyager 1's entry into interstellar space, the discovery of the universe's accelerated expansion, and the observation of Sagittarius A* as the first observed supermassive black hole in the Milky Way.
Step-by-step explanation:
To answer the question regarding the order in which events occurred in the history of space exploration, we will arrange them chronologically based on historical and scientific developments.
- Observational confirmation of the Big Bang theory - This came about as astronomers began to understand that the universe is expanding and evolving. Pioneering observations of galaxy spectra and their velocities boosted this concept.
- Discovery of quasars - Quasars were discovered in the early 1960s, revealing energetic phenomena at great distances and hinting at a dynamic and evolving universe.
- Voyager 1 - the first spacecraft to enter interstellar space - Voyager 1, launched in 1977, crossed the heliopause into interstellar space in August 2012.
- Accelerated expansion of the universe - This phenomenon was discovered through measurements of distant supernovae, indicating that the expansion rate of the universe was increasing.
- Sagittarius A* - the first observed supermassive black hole in the Milky Way - The existence of a supermassive black hole at the center of our galaxy was confirmed with the observation of the object designated Sagittarius A*. This observation helped confirm that black holes do, in fact, exist.
- Understanding the ultimate fate of the universe - This is an ongoing endeavor that builds upon the current knowledge of the universe's expansion, dark matter, dark energy, and other cosmic phenomena.
Therefore, the correct order is C, A, D, E, B.