Exo-orbitals Exosolar planets Exoplanetary bodies Extrasolar planets
50.3 light years 6.1 light years 4.2 light years 12.5 light years
Buran Energiya Proton Zenit
Bioalienology Exobiology Exoalienology Alienology
Schwarzschild Radius Trapped Surface Singularity Event Horizon
Saturn & Uranus Mars & Jupiter Earth & Mars Jupiter & Saturn
Apollo-Soyuz Test Project Skylab International Space Station Mir
120 million km 90 million km 200 million km 150 million km
The limit of the known universe Young supermassive galaxies Supermassive black holes Massive supernovae
Pulsar Quasar Black Hole White Dwarf