HalfSPACE
Journey through the cosmos
This site isn't competing with others — it stands as a unique vision of space.
Fact of the Day
Universe Age
The universe is approximately 13.8 billion years old. We can observe light from galaxies that are over 13 billion light-years away.
Quick Start
Solar System
Explore our cosmic neighborhood - the Sun, planets, moons, asteroids, and comets
Planets
Discover all eight planets in our Solar System
Stars
The building blocks of galaxies - stellar formation and life cycles
Galaxies
Island universes containing billions of stars
Black Holes
Regions where gravity is so strong that nothing can escape
Nebulae
Cosmic clouds of gas and dust - stellar nurseries
Space Missions
Humanity's greatest space missions from Apollo to Mars rovers
Telescopes
Our windows to the universe - from Hubble to James Webb
Exoplanets
Planets orbiting other stars - thousands discovered
Space Journey
An interactive journey through the cosmos