Quizzes and Questions
Amusing quizzes for young amateur astronomers
and serious questions to professional astronomers
From CYG group,
Varna, Bulgaria. Please reply by email to: email@example.com.
A. Quizzes for young amateur astronomers
- 1. What is the direction of a comet's tail with respect to
the Sun? Why?
- 2. Is it possible two meteor showers, active in different times of
the year, to be caused by one meteor stream? Name an example.
- 3. What caused the shrinking of the cosmic cloud of which our
solar system was formed?
- 4. Is the Hubble's constant really a constant? Why?
- 5. Why the inner planets contain so much heavy elements, while the
outer planets consist mostly of gases?
- 6. Which are the three stars closest to us?
- 7. Which of the asteroids can be observed by the naked eye?
- 8. Who made the first reflector telescope?
B. Questions addressed to professional astronomers
Please answer to the email above! We shall be thankful for your
replies! After a few days, we will write the answers and publish them
in the Astronomy On-Line Newspaper.
I. Questions asked by Galin Genchev, 17 years old:
- 1. How the parallax of a star is measured in order to
determine the distance to the star?
- 2. How astronomers measure the luminosity of the stars?
- 3. It is known that the trajectory of the Sun around the galactic
centre is not flat, the Sun plunges and emerges above the galactic
plane like a dolphin with a period of about 25 million years. How far
from the galactic plane does it go?
II. Questions asked by Denis Mehmedov and Elena Sarbinska, 12
- 1. Do the black holes emit radio signals?
- 2. How would the starry sky look like on a planet orbiting the
farthest star from the centre of our Galaxy?
- 3. How will the orbital motion of the planets change when the Sun
becomes a red giant? What will happen then to the life on the Earth?
- 4. Is there in the Universe a kind of matter that resists the
- 5. Have the asteroids gravity?
- 6. Why men still haven't visited Mars?
- 7. Who created the largest (10 m) optical telescope? Which was the
first object observed by it?
Place and Date: Astronomical Observatory & Planetarium
"N. Copernicus", Varna (Bulgaria) - 12 November 1996.