Ramona Upton

Latest Articles

What are the three main components of the universe?

What is the H-R diagram in simple terms?

What causes a star to increase in size?

What are lumps of ice and dust?

What is a planetary nebula and why do we see it glowing?

Why are some nebulas hard to see?

What are the disadvantages of ion thrusters?

What is a supernova also called?

Does a rover have communication?

What is the life expectancy of a high mass star?