Which type of galaxy is characterized by a flat, disc-shaped structure and spiral arms?

Which type of galaxy is spherical or elliptical in shape with no distinct spiral arms?

Which type of galaxy has a shape that is neither spiral nor elliptical, and lacks a defined shape or structure?

Which type of galaxy is disk-shaped with a bulge in the center but lacks spiral arms?

Which type of galaxy is a very large and luminous structure that consists of a central bulge surrounded by a spherical halo?

Which type of galaxy is characterized by a central bulge and arms that extend outward in a pinwheel shape?

What is the plane of the Earth's orbit around the sun called?

What is a group of billion of stars (together with some gas and dust) that move through space as a unit called?

Who classified galaxies based on their appearance?

What are stars mostly made of?

What determines the color of a star?

Which type of star can be more than 1500 times larger than our Sun?

What is the nearest star to Earth?

What produces the light and heat in the cores of stars?

What factor determines the size of a star?

How is the brightness of a star defined by astronomers?

What are neutron stars primarily composed of?

What type of star can be very similar in size to the Earth?

Which type of constellation can be seen year-round and never disappear?

In the Philippines, what is the local name for Orion?

What does the constellation 'Buwaya' signify in the Philippines?

Which constellation is known as 'the Queen'?

What is the local name for Taurus in the Philippines?

What is the local name for Pleiades in the Philippines?

Which constellation signifies the start of the rainy season in the Philippines?

In the Philippines, what is the local name for Canis Minor?

Which type of constellation is divided into circumpolar, zodiacal, and seasonal categories?