Discover why the Sun is hot, how nuclear fusion powers it, and why its outer layers can be hotter than its surface.

Robots will likely construct early lunar and Martian bases because they can work longer, faster, and safer in extreme environments.

Learn why the Sun is classified as a star, how nuclear fusion powers it, and what sets it apart from other stars.

Learn what size asteroid could destroy a city, how impacts scale by diameter, and why distance, speed, and composition matter.

Learn what the Sun’s core is made of, how nuclear fusion powers it, and why this hidden region controls life on Earth.

Learn how Parker Solar Probe measures the Sun’s corona, magnetic fields, and solar wind from record-breaking close range.

A clear explanation of why the Sun does not explode, from gravity and fusion balance to why it will end in a different way.

Learn how hot the Sun really is, why its temperature changes by layer, and what drives its extreme energy output.

Scientists track asteroids to assess impact risk, protect Earth, and improve our understanding of the solar system.