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