Why Do Space Habitats Need Radiation Shielding?
Learn why space habitats need radiation shielding, what threats astronauts face, and which materials and designs reduce long-term exposure.
Learn why space habitats need radiation shielding, what threats astronauts face, and which materials and designs reduce long-term exposure.
Plants support life support, nutrition, health, and sustainability in space missions, making them essential for long-duration exploration.
Explore which plants can grow in space, why they work, and how NASA and other missions use them for food, oxygen, and crew health.
Learn which foods are banned or avoided in space, and why microgravity, safety, and spacecraft systems make some everyday foods a bad fit.
Space tourism now includes two very different products: (1) suborbital flights that deliver minutes of weightlessness and a view of Earth, and (2) orbital private-astronaut missions (typically days in space, often to the International Space Station). The headline numbers look small compared with mainstream travel, but they’re large enough to support a fast-growing premium niche—especially … Read more
The European Space Agency (ESA) is Europe’s intergovernmental space organisation, coordinating major programmes in Earth observation, navigation, telecom, space science, exploration, launchers, and space safety across a multi-country membership. ESA Statistics (Top Highlights) ESA Budget Statistics ESA’s annual budget is funded via a mix of mandatory contributions (all Member States) and optional programmes (countries opt … Read more
The space industry is now a large, fast-commercializing global market driven by satellite broadband, Earth observation, defense demand, and a record launch cadence that keeps lowering the cost of putting capability into orbit. Space Industry Statistics (Top Highlights) Global Space Economy Size By the Space Foundation’s benchmark, the global space economy grew from $531B (2022, … Read more
NASA is one of the world’s largest public science-and-exploration organizations, spanning human spaceflight, space science, Earth observation, aeronautics, and technology development. Below is a data-heavy snapshot of NASA statistics covering funding, workforce, mission volume, and space-station research output. NASA Statistics (Top Highlights) NASA Funding Statistics NASA’s FY 2025 Agency Financial Report summarizes $35.6B in appropriations … Read more
SpaceX’s story is now mostly a story about cadence (launching often), reusability (landing and reflighting boosters), and scale (Starlink becoming a global telecom system). The numbers below focus on the most consistently reported metrics: launches, landings/reuse milestones, Starlink growth, and a few widely cited financial indicators. SpaceX Statistics (Top Highlights) SpaceX Launch Cadence Statistics SpaceX … Read more
I. What is Redshift (z)? Redshift (z) is a phenomenon in astronomy where the light emitted by an object in space is shifted towards longer wavelengths, causing it to appear more red than it actually is. This shift in the wavelength of light is a result of the Doppler effect, which occurs when an object … Read more