Eclipses and Celestial Observations

Steve Bleiler, a professor at Portland State University, shares his lifelong passion for astronomy. He explains how to observe celestial objects using simple tools and discusses the mathematics behind solar and lunar eclipses. Bleiler delves into the cycles of eclipses and how they can be predicted using historical and mathematical methods. He also highlights the historical and cultural significance of eclipses, emphasizing their impact on ancient civilizations.

What is Steve Bleiler's profession?

• Mathematician and Statistician

• Physicist

• Chemist

• Astronomer

What simple tool can be used to start observing celestial objects?

• A magnifying glass

• A vertical stick

• A telescope

• A compass

What is necessary to predict an eclipse?

• A telescope

• A strobe light

• Knowledge of celestial alignments

• A compass

What is a synodic month?

• The time from one full moon to the next

• The time from one new moon to the next

• The time from one perigee to the next

• The time from one node to the next

What is the angle between the Moon's orbital plane and the Earth's Sun plane?

• 15 degrees

• 5 degrees

• 20 degrees

• 10 degrees

How many eclipses can occur in a year?

• Up to 5

• Up to 9

• Up to 11

• Up to 7

Which ancient civilization was known for predicting lunar eclipses?

• The Egyptians

• The Romans

• The Greeks

• The Babylonians

What did ancient people believe caused solar eclipses?

• The Moon exploding

• The Earth stopping

• The Sun falling

• A dragon eating the Sun

What organization provides accurate celestial navigation data today?

• NASA

• The US Naval Observatory

• The European Space Agency

• The International Astronomical Union