What Is a Nebula in Space?

What Is a Nebula in Space?

A nebula is a vast cloud of gas and dust in space, often spanning dozens or even hundreds of light-years. Nebulae are among the most beautiful and fascinating structures in…
What Is a Gas Giant?

What Is a Gas Giant?

A gas giant is a type of planet that is much larger than Earth and composed mostly of hydrogen and helium, rather than solid rock or metal. These planets do…