[1st class Astronomy and Space Doctor]
This is a high-level problem collection for those who want to test their knowledge on astronomy-related topics and astronomical current events.
Questions will be asked from astronomy, astrophysics, and related fields at the level studied at science and engineering universities. Contains 183 past questions of the Astronomy and Space Test, mock questions that show the question trends, and questions from the official reference book ``Solving the Polar Universe'' along with correct answers and explanations. The content is the same as the "Astronomy and Space Proficiency Test Level 1 Official Question Collection 2024-2025 Edition".
Ideal for checking your understanding of knowledge and reviewing before exams.

"table of contents"
Chapter 1 Observation
Chapter 2 Theory
Chapter 3 Space development
Chapter 4 Astronomy and others
Chapter 5 Astronomical current events
Chapter 6 Related fields

[2nd grade Galaxy Doctor]
This is a problem collection for those who want to satisfy their intellectual curiosity about space to a deeper level.
Questions will be asked from areas such as high school geology level astronomical knowledge, the latest space exploration results, space engineering, calendars, and the history of astronomy. Contains 221 past questions and mock questions for the Astronomy and Space Test, along with correct answers and explanations.
It is structured in accordance with the official text of the Astronomy and Space Proficiency Test Level 2, and the content is the same as the ``Astronomy and Space Test Level 2 Official Question Collection 2024-2025 Edition''.
Ideal for checking your understanding of official texts and reviewing before exams.

"table of contents"
Chapter 1 Seven Wonders of the Universe
Chapter 2: Is the sun a blazing fireball?
Chapter 3: The solar system is still full of mysteries (!)
Chapter 4 Stars of various colors
Chapter 5 Life of stars
Chapter 6: What is the galaxy made of?
Chapter 7: Galaxy World
Chapter 8 History of Astronomy
Chapter 9: Humanity’s expansion into space and space engineering
Chapter 10 Life in the Universe

[3rd grade starry sky doctor]
This is a problem collection for those who want to acquire a wide range of knowledge about astronomy.
Questions will be asked from areas such as junior high school level astronomical knowledge, space development, and the history of astronomy. Contains 237 past questions and mock questions for the Astronomy and Space Exam, along with correct answers and explanations.
It is structured in accordance with the official textbook for Astronomy and Space Proficiency Test Level 3, and the content is the same as the ``Astronomy and Space Proficiency Test Level 3 Official Question Collection 2024-2025 Edition''.
Ideal for checking your understanding of official texts and reviewing before exams.

"table of contents"
Chapter 1 Seven Wonders of Star Names
Chapter 2: Who decided the constellations?
Chapter 3: The sun and stars rotating in the sky
Chapter 4: The sun and the moon, get along well
Chapter 5 Friends of the solar system
Chapter 6: What lies beyond the solar system?
Chapter 7 History of Astronomy
Chapter 8 And to space

[4th grade Star Doctor Junior]
This is a problem collection for those who are thinking of learning astronomy from now on.
Questions will be asked from basic areas of astronomy, such as astronomical knowledge at the level of elementary school students, the movements of the sun, moon, and earth, the world of the solar system and galaxy, the world of constellations and myths, and methods of astronomical observation. Contains 181 past questions and mock questions for the Astronomy and Space Test, along with correct answers and explanations.
It is structured in accordance with the official textbook for Astronomy and Space Proficiency Test Level 4, and the content is the same as the ``Astronomy and Space Proficiency Test Level 4 Official Question Collection 2024-2025 Edition''.
Ideal for checking your understanding of official texts and reviewing before exams.

"table of contents"
Chapter 0 Let's go into space
Chapter 1 Moon and Earth
Chapter 2 Sun and Earth
Chapter 3: The world of the solar system
Chapter 4: The world of constellations
Chapter 5: The world of stars and galaxies
Chapter 6: Introduction to astronomical observation