Luca de
Astronomy teacher | Tutor for 5 years
With a passion for unraveling the mysteries of the cosmos, I earned my degree in Astronomy from Dordt University. My journey into the depths of space has equipped me with the knowledge to guide students through the wonders of celestial bodies and cosmic phenomena. Whether it's explaining the intricacies of black holes or deciphering the secrets of distant galaxies, I'm here to ignite curiosity and foster a deeper understanding of the universe. Let's embark on an astronomical adventure together!
Questions
What formula would be used to calculate the aphelion distance of Halley's Comet from the sun? Halley’s comet has a perihelion distance of 0.6 AU & an orbital period of 76 years,
What is the shape of earth's orbit?
How do lenses refract light?
Is gravity a strong force?
How old is our Universe?
How does the angular size of the sun and the moon effect an eclipse?
What is the current tilt of the Earth's axis? How has it changed over the last 100 years?
What is outside the observable universe?
How massive is the universe?
Is there any possible way that people can live in other galaxies?
How and why do red giants become so large?
Why is the galaxy infinite?
What would happen to our seasons if Earth's axis was not tilted?
What is the difference between cosmology and theodicy?
How can white dwarfs be both hot and dim?
Did the lack of observable parallax help convince astronomers Earth did not move?
A quasar consumes 1 solar mass of material per year, converting 15 percent of it directly into energy. What is the quasar's luminosity, in solar units?
If Proxima Centauri is the next nearest star to Earth after the sun and it is 4.2 light years, does that mean every star we see in the night sky is farther away than 4.2 light years?
What are cepheid variable stars and why are they important?
What are the 3 closest galaxies to ours? What are their names and do any of them have the required conditions to hold life?