When did astronomy split between theoretical and observational branches?
What does the Wikipedia 'Astronomy' call astrology?
Cosmology is the study of
What does the Wikipedia 'Astronomy' article say about astronomy and astrophysics
The goecentric theory put the Sun
In the 3rd century BC, Aristarchus of Samos estimated the size of
In the 19th century Fraunhoffer and Kirchoff studied light from the Sun and found
The ancient Greeks discovered (named) most of the constellations
When did astronmers establish that the Milky way is only one of many billions of galaxies in the universe?
According to the Wikipedia Astronomy article, the first known efforts in the mathematical and scientific study of Astronomy began
How many years did it take before Europe made a device as sophisticated as Antikythera?
The saro cycle was about repeating cycles of
In what century was parallax first used to measure the distance to a Star (other than our Sun)?
The largest galaxy in the local group is
What two names are associated with the first new planet found (after those known by the ancients using the naked eye)
The historical record shows that in 1066 AD a supernovae was discovered by astronomers in _____ and _____