Solar sails are space’s ultimate free ride, they get their propulsion from the Sun, so they don’t need to carry propellant, but they come with their own challenges. A sail

The early universe was shrouded in darkness. Just hundreds of millions of years after the Big Bang, a thick fog of hydrogen gas choked the cosmos, blocking light from traveling

An international team of astronomers using the (https://sites.krieger.jhu.edu/class/) (CLASS) (https://hub.jhu.edu/2025/06/11/telescopes-look-at-cosmic-dawn/) announced the first-ever detection of radiation from the cosmic microwave background (CMB) interacting

We don’t know what dark matter is, but that doesn’t stop astronomers from using it to their advantage. Dark matter is part of what makes gravitational lensing so effective. Astronomers

When astronauts finally reach Mars, they’ll face a unique challenge: walking and working in gravity that’s only 37% as strong as Earth’s. After spending months in the weightlessness of space,

When the Apollo astronauts landed on the Moon, they discovered drifts of tiny brilliant orange glass beads glittering across the surface. Each one less than 1 mm across and formed