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