History of Astronomy
He formulated a heliocentric model of the universe in his book De Revolutionibus Orbium Coelestium.
Nicolaus Copernicus
What is the outermost layer of the Sun?
Corona
What is the term used to describe the measure of a star's brightness as seen from Earth?
Apparent Magnitude
What astronomical event made the headlines in 1986?
Halley's Comet/ 1P/ Halley
Who formulated the three laws of planetary motion?
Johannes Kepler
To determine whether a celestial body is approaching or receding from Earth, astronomers employ ________.
Doppler Principle/ Doppler Effect
Orion’s Belt is a prominent asterism formed by three stars in the constellation Orion. Alnitak is a triple star system, Mintaka is a sextuple and what other single star?
Alnilam/ Epsilon Orionis
What is the fundamental particle of light and all forms of electromagnetic radiation that carries information from celestial objects to astronomers?
Photon
Who formulated the Modern Big Bang Theory?
Georges Lemaître
What is the largest known volcano in the solar system, and on which planet is it located?
Olympus Mons, Mars.
The Messier 4 or M4 is a globular cluster discovered by Philippe Loys de Chéseaux in 1745 and was catalogued by Charles Messier in 1764. M4 is found in which constellation?
Scorpius; Constellation Scorpius
Makemake, one of the dwarf planets in our solar system, is located in which region beyond Neptune and is known for its bright surface covered with methane ice?
Kuiper belt
Based on the Hertzsprung-Russel Diagram, what group of stars are cool and bright?
Red Giants
It is the measure of the size of the event horizon of a black hole.
Schwarzschild radius
This is the most common method of classification which classifies stars based on temperature using the letters O, B, A, F, G, K, and M, – O being the hottest and M the coolest. It assigns a precise system of Draper classes and five luminosity classes, using the Roman numerals I to V.
Morgan–Keenan (MK) system
The 17th IAAO (International Astronomy and Astrophysics Olympiad) was held last August 4-14, 2024 in Rio de Janeiro, Brazil. In the national flag of Brazil, there are stars representing several constellations in addition to the stars of the Southern Cross. Aside from Crux, name three (3) other constellations depicted in the Brazilian flag.
Canis Major; Scorpius; Virgo