Blog

Learn how spacecraft observe, measure, sample, and map asteroids to reveal their composition, history, and potential hazards.

Learn what space exploration is, why it matters, how it works, and where human and robotic missions are heading next.

Space exploration looks straightforward from the outside, but distance, radiation, life support, and communication make every mission a systems challenge.

Explore how space exploration drives innovation, strengthens science, improves daily life, and expands humanity’s understanding of Earth and the universe.

Learn how to read a star chart, identify constellations, and match sky maps to real-world observing conditions.

Learn how to stargaze in light pollution with simple techniques, equipment choices, and viewing strategies that reveal more stars from bright skies.

NASA leads U.S. space exploration through science, technology, mission planning, and international partnerships that expand human knowledge beyond Earth.

Space exploration advances science, but it also carries serious risks for astronauts, spacecraft, and future missions.

Humans explore space to expand knowledge, protect Earth, and build technologies that shape life on our planet.

Learn how to identify planets, stars, satellites, and other visible objects in the night sky using simple tools, apps, and observation tips.