Hailey Alexander

Aside from our own sun, what is the closest star in relation to earth?

Why is Pluto now classified as a dwarf planet? Why was it downgraded?

How does NASA explain UFOs?

What would happen if the tilt of the earth was 0 degrees?

How does the planet Venus rank in size compared to the sun and to the moon?

Which planet in our solar system has the most satellites?

Why do some people not agree with the Big Bang Theory?

Why are stars visible in the sky at night?

Does earth have seasons because its axis is tilted as it revolves around the sun?

What happens to a star when all the hydrogen has been converted to helium?

Why is the outer core made up of liquid rock?

How is the distance between the sun and earth calculated?

What is the distance between Earth and Pluto in miles?

What limits the size of a telescope on Earth?

What is the difference between a galaxy and a nebula? How do astronomers tell them apart?

What is one reason to prefer a reflecting over a refracting telescope?

How often do all the planets align?

What is earth's lower mantle made of?

What is a star field?

What are black holes, white dwarfs, and neutron stars?