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International Astronomy Olympiad (IAO)

The International Astronomy Olympiad (IAO) is an annual astronomy competition for high school students. It is held in a different country each year, and students from over 50 countries participate. The IAO consists of a written exam and an observational exam. The written exam covers topics such as stellar astronomy, planetary astronomy, and cosmology. The observational exam tests students' ability to use telescopes and other astronomical instruments to make observations of the night sky.

14 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

What is the name of the star that is closest to Earth?

  1. Proxima Centauri
  2. Sirius
  3. Alpha Centauri
  4. Vega
Question 2 Multiple Choice (Single Answer)

What is the name of the planet that is closest to the Sun?

  1. Mercury
  2. Venus
  3. Earth
  4. Mars
Question 3 Multiple Choice (Single Answer)

What is the name of the largest planet in the solar system?

  1. Jupiter
  2. Saturn
  3. Uranus
  4. Neptune
Question 4 Multiple Choice (Single Answer)

What is the name of the smallest planet in the solar system?

  1. Mercury
  2. Venus
  3. Earth
  4. Mars
Question 5 Multiple Choice (Single Answer)

What is the name of the star that is at the center of our galaxy?

  1. Sagittarius A*
  2. Vega
  3. Sirius
  4. Proxima Centauri
Question 6 Multiple Choice (Single Answer)

What is the name of the galaxy that is closest to our galaxy?

  1. Andromeda
  2. Triangulum
  3. M31
  4. M33
Question 7 Multiple Choice (Single Answer)

What is the name of the largest galaxy in the universe?

  1. IC 1101
  2. UGC 2885
  3. NGC 6872
  4. IC 1011
Question 8 Multiple Choice (Single Answer)

What is the name of the oldest star in the universe?

  1. HD 140283
  2. HE 1523-0901
  3. Methuselah Star
  4. PSR J1119-0136
Question 9 Multiple Choice (Single Answer)

What is the name of the first exoplanet that was discovered?

  1. 51 Pegasi b
  2. HD 209458 b
  3. Gliese 876 b
  4. Tau Boötis b
Question 10 Multiple Choice (Single Answer)

What is the name of the first interstellar object that was discovered?

  1. 'Oumuamua
  2. 2I/Borisov
  3. C/2019 Q4 (Borisov)
  4. C/2017 U1 (PANSTARRS)
Question 11 Multiple Choice (Single Answer)

What is the name of the largest black hole in the universe?

  1. TON 618
  2. SDSS J0100+2802
  3. J2157-3602
  4. OJ 287
Question 12 Multiple Choice (Single Answer)

What is the name of the first space telescope that was launched?

  1. Hubble Space Telescope
  2. Chandra X-ray Observatory
  3. Spitzer Space Telescope
  4. James Webb Space Telescope
Question 13 Multiple Choice (Single Answer)

What is the name of the first person to walk on the moon?

  1. Neil Armstrong
  2. Buzz Aldrin
  3. Michael Collins
  4. Alan Shepard
Question 14 Multiple Choice (Single Answer)

What is the name of the first space probe that was sent to Mars?

  1. Mariner 4
  2. Mariner 9
  3. Viking 1
  4. Viking 2
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