Learn how sunlight travels through space, what happens in Earth’s atmosphere, and why daylight looks different across the planet.

Learn how solar and lunar eclipses occur, why they don’t happen every month, and what makes each type so rare and dramatic.

Near-Earth objects can threaten Earth through impact energy, atmospheric effects, and tsunami risk. This guide explains the science, odds, and defenses.

Learn what the DART mission was, how it worked, and why NASA’s asteroid impact test matters for planetary defense.

Learn what the Sun’s corona is, why it is hotter than the surface, and how scientists study this outer atmosphere.

Learn how big the Sun is, how it compares with Earth and other stars, and why its size matters for life on our planet.

Learn what a robotic spacecraft is, how it works, and why these uncrewed machines are essential to modern space exploration.

Learn how the Sun will die, from red giant expansion to white dwarf formation, and what that means for Earth and the solar system.

Learn how solar radiation, atmospheric drag, and geomagnetic storms affect satellites, plus the technologies operators use to protect them.

Learn why the Sun has spots, how sunspots form, and what they reveal about the Sun’s magnetic activity and space weather.