Explore the strongest reasons scientists propose for why extraterrestrial civilizations may not be visiting Earth, from distance and technology to timing and communication.
I. What is Lunar Regolith? Lunar regolith is the layer of loose, fragmented material that covers the surface of the moon. It is made up of a mixture of fine dust, rocks, and other debris that has accumulated over billions of years. The regolith is the result of meteorite impacts, volcanic activity, and the constant … Read more
Learn how astronauts detect, control, and prevent fire in spacecraft and on the ISS using specialized systems, strict procedures, and training.
Learn how astronauts survive emergencies in space using spacecraft safety systems, training, medical protocols, and rapid response procedures.
Explore the ways alien life could differ from Earth life, from chemistry and cells to metabolism, environments, and signs astronomers search for.
Learn how spacecraft and space stations generate, recover, and reuse oxygen to keep astronauts alive far from Earth.
I. What is Space Weather Modeling? Space weather modeling is the process of using mathematical and computational models to simulate and predict the behavior of the space environment surrounding Earth. This includes phenomena such as solar flares, geomagnetic storms, and cosmic rays. By studying and modeling these events, scientists can better understand how space weather … Read more
Learn why spacesuits are essential for human survival in space, from pressure and oxygen to radiation, temperature, and micrometeoroids.
Humans can survive only minutes in exposed space, but survival time changes dramatically inside spacecraft with life support.
Learn which materials best block space radiation, how shielding works, and why the best choice depends on particle type, thickness, and mission design.