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