Space science

Explore astronomy, NASA missions, planets, galaxies, the Moon, the Solar System and discoveries that expand our understanding of the universe.

Latest in Space science

Articles & explainers

8,698 published items in this category and its subcategories.

Why does the sun glow and generate heat?
Space science

Why does the sun glow and generate heat?

The sun is like a hot, dazzling fireball. Every hour it radiates a large amount of energy, emitting light and heat in the universe, including our Earth.

March 24, 2020